diff --git a/client/src/app/core/services/app-load.service.ts b/client/src/app/core/services/app-load.service.ts
index 662a6b1ba..3c66a230f 100644
--- a/client/src/app/core/services/app-load.service.ts
+++ b/client/src/app/core/services/app-load.service.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { plugins } from '../../../plugins';
 import { CommonAppConfig } from '../../site/common/common.config';
-import { AppConfig } from '../../site/base/app-config';
+import { AppConfig, SearchableModelEntry, ModelEntry } from '../../site/base/app-config';
 import { CollectionStringModelMapperService } from './collectionStringModelMapper.service';
 import { MediafileAppConfig } from '../../site/mediafiles/mediafile.config';
 import { MotionsAppConfig } from '../../site/motions/motions.config';
@@ -12,6 +12,8 @@ import { UsersAppConfig } from '../../site/users/users.config';
 import { TagAppConfig } from '../../site/tags/tag.config';
 import { MainMenuService } from './main-menu.service';
 import { HistoryAppConfig } from 'app/site/history/history.config';
+import { SearchService } from './search.service';
+import { isSearchable } from '../../shared/models/base/searchable';
 
 /**
  * A list of all app configurations of all delivered apps.
@@ -29,15 +31,23 @@ const appConfigs: AppConfig[] = [
 ];
 
 /**
- * Handles all incoming and outgoing notify messages via {@link WebsocketService}.
+ * Handles loading of all apps during the bootup process.
  */
 @Injectable({
     providedIn: 'root'
 })
 export class AppLoadService {
+    /**
+     * Constructor.
+     *
+     * @param modelMapper
+     * @param mainMenuService
+     * @param searchService
+     */
     public constructor(
         private modelMapper: CollectionStringModelMapperService,
-        private mainMenuService: MainMenuService
+        private mainMenuService: MainMenuService,
+        private searchService: SearchService
     ) {}
 
     public async loadApps(): Promise<void> {
@@ -52,6 +62,9 @@ export class AppLoadService {
             if (config.models) {
                 config.models.forEach(entry => {
                     this.modelMapper.registerCollectionElement(entry.collectionString, entry.model);
+                    if (this.isSearchableModelEntry(entry)) {
+                        this.searchService.registerModel(entry.collectionString, entry.model, entry.searchOrder);
+                    }
                 });
             }
             if (config.mainMenuEntries) {
@@ -59,4 +72,17 @@ export class AppLoadService {
             }
         });
     }
+
+    private isSearchableModelEntry(entry: ModelEntry | SearchableModelEntry): entry is SearchableModelEntry {
+        if ((<SearchableModelEntry>entry).searchOrder !== undefined) {
+            // We need to double check, because Typescipt cannot check contructors. If typescript could differentiate
+            // between  (ModelConstructor<BaseModel>) and (new (...args: any[]) => (BaseModel & Searchable)), we would not have
+            // to check if the result of the contructor (the model instance) is really a searchable.
+            if (!isSearchable(new entry.model())) {
+                throw Error(`Wrong configuration for ${entry.collectionString}: you gave a searchOrder, but the model is not searchable.`);
+            }
+            return true;
+        }
+        return false;
+    }
 }
diff --git a/client/src/app/core/services/data-store.service.ts b/client/src/app/core/services/data-store.service.ts
index bbd2537b7..c5dd73a0e 100644
--- a/client/src/app/core/services/data-store.service.ts
+++ b/client/src/app/core/services/data-store.service.ts
@@ -69,7 +69,7 @@ export class DataStoreService {
     /**
      * Observable subject for changed models in the datastore.
      */
-    private changedSubject: Subject<BaseModel> = new Subject<BaseModel>();
+    private readonly changedSubject: Subject<BaseModel> = new Subject<BaseModel>();
 
     /**
      * Observe the datastore for changes.
@@ -83,7 +83,7 @@ export class DataStoreService {
     /**
      * Observable subject for changed models in the datastore.
      */
-    private deletedSubject: Subject<DeletedInformation> = new Subject<DeletedInformation>();
+    private readonly deletedSubject: Subject<DeletedInformation> = new Subject<DeletedInformation>();
 
     /**
      * Observe the datastore for deletions.
@@ -94,6 +94,20 @@ export class DataStoreService {
         return this.deletedSubject.asObservable();
     }
 
+    /**
+     * Observable subject for changed or deleted models in the datastore.
+     */
+    private readonly changedOrDeletedSubject: Subject<BaseModel | DeletedInformation> = new Subject<BaseModel | DeletedInformation>();
+
+    /**
+     * Observe the datastore for changes and deletions.
+     *
+     * @return an observable for changed and deleted objects.
+     */
+    public get changedOrDeletedObservable(): Observable<BaseModel | DeletedInformation> {
+        return this.changedOrDeletedSubject.asObservable();
+    }
+
     /**
      * The maximal change id from this DataStore.
      */
@@ -137,7 +151,7 @@ export class DataStoreService {
             // update observers
             Object.keys(this.modelStore).forEach(collection => {
                 Object.keys(this.modelStore[collection]).forEach(id => {
-                    this.changedSubject.next(this.modelStore[collection][id]);
+                    this.publishChangedInformation(this.modelStore[collection][id]);
                 });
             });
         } else {
@@ -293,7 +307,7 @@ export class DataStoreService {
                 this.jsonStore[collection] = {};
             }
             this.jsonStore[collection][model.id] = JSON.stringify(model);
-            this.changedSubject.next(model);
+            this.publishChangedInformation(model);
         });
         if (changeId) {
             await this.flushToStorage(changeId);
@@ -317,7 +331,7 @@ export class DataStoreService {
             if (this.jsonStore[collectionString]) {
                 delete this.jsonStore[collectionString][id];
             }
-            this.deletedSubject.next({
+            this.publishDeletedInformation({
                 collection: collectionString,
                 id: id
             });
@@ -340,9 +354,9 @@ export class DataStoreService {
         // Inform about the deletion
         Object.keys(modelStoreReference).forEach(collectionString => {
             Object.keys(modelStoreReference[collectionString]).forEach(id => {
-                this.deletedSubject.next({
+                this.publishDeletedInformation({
                     collection: collectionString,
-                    id: +id
+                    id: +id // needs casting, because Objects.keys gives all keys as strings...
                 });
             })
         });
@@ -351,6 +365,26 @@ export class DataStoreService {
         }
     }
 
+    /**
+     * Informs the changed and changedOrDeleted subject about a change.
+     *
+     * @param model The model to publish
+     */
+    private publishChangedInformation(model: BaseModel): void {
+        this.changedSubject.next(model);
+        this.changedOrDeletedSubject.next(model);
+    }
+
+    /**
+     * Informs the deleted and changedOrDeleted subject about a deletion.
+     *
+     * @param information The information about the deleted model
+     */
+    private publishDeletedInformation(information: DeletedInformation): void {
+        this.deletedSubject.next(information);
+        this.changedOrDeletedSubject.next(information);
+    }
+
     /**
      * Updates the cache by inserting the serialized DataStore. Also changes the chageId, if it's larger
      * @param changeId The changeId from the update. If it's the highest change id seen, it will be set into the cache.
diff --git a/client/src/app/core/services/search.service.spec.ts b/client/src/app/core/services/search.service.spec.ts
new file mode 100644
index 000000000..9c9787e01
--- /dev/null
+++ b/client/src/app/core/services/search.service.spec.ts
@@ -0,0 +1,16 @@
+import { TestBed, inject } from '@angular/core/testing';
+import { E2EImportsModule } from '../../../e2e-imports.module';
+import { SearchService } from './search.service';
+
+describe('SearchService', () => {
+    beforeEach(() => {
+        TestBed.configureTestingModule({
+            imports: [E2EImportsModule],
+            providers: [SearchService]
+        });
+    });
+
+    it('should be created', inject([SearchService], (service: SearchService) => {
+        expect(service).toBeTruthy();
+    }));
+});
diff --git a/client/src/app/core/services/search.service.ts b/client/src/app/core/services/search.service.ts
new file mode 100644
index 000000000..51cd37e2c
--- /dev/null
+++ b/client/src/app/core/services/search.service.ts
@@ -0,0 +1,131 @@
+import { Injectable } from '@angular/core';
+import { BaseModel } from '../../shared/models/base/base-model';
+import { DataStoreService } from './data-store.service';
+import { Searchable } from '../../shared/models/base/searchable';
+
+/**
+ * The representation every searchable model should use to represent their data.
+ */
+export type SearchRepresentation = string[];
+
+/**
+ * Our representation of a searchable model for external use.
+ */
+export interface SearchModel {
+    /**
+     * The collection string.
+     */
+    collectionString: string;
+
+    /**
+     * The singular verbose name of the model.
+     */
+    verboseNameSingular: string;
+
+    /**
+     * The plural verbose name of the model.
+     */
+    verboseNamePlural: string;
+}
+
+/**
+ * A search result has the model's collectionstring, a verbose name and the actual models.
+ */
+export interface SearchResult {
+    /**
+     * The collection string.
+     */
+    collectionString: string;
+
+    /**
+     * This verbodeName must have the right cardianlity. If there is exactly one model in `models`,
+     * it should have a singular value, else a plural name.
+     */
+    verboseName: string;
+
+    /**
+     * All matched models.
+     */
+    models: (BaseModel & Searchable)[];
+}
+
+/**
+ * This service cares about searching the DataStore and managing models, that are searchable.
+ */
+@Injectable({
+    providedIn: 'root'
+})
+export class SearchService {
+    /**
+     * All searchable models in our own representation.
+     */
+    private searchModels: {
+        collectionString: string;
+        ctor: new (...args: any[]) => Searchable & BaseModel;
+        verboseNameSingular: string;
+        verboseNamePlural: string;
+        displayOrder: number;
+    }[] = [];
+
+    /**
+     * @param DS The DataStore to search in.
+     */
+    public constructor(private DS: DataStoreService) {}
+
+    /**
+     * Registers a model by the given attributes.
+     *
+     * @param collectionString The colelction string of the model
+     * @param ctor The model constructor
+     * @param displayOrder The order in which the elements should be displayed.
+     */
+    public registerModel(
+        collectionString: string,
+        ctor: new (...args: any[]) => Searchable & BaseModel,
+        displayOrder: number
+    ): void {
+        const instance = new ctor();
+        this.searchModels.push({
+            collectionString: collectionString,
+            ctor: ctor,
+            verboseNameSingular: instance.getVerboseName(),
+            verboseNamePlural: instance.getVerboseName(true),
+            displayOrder: displayOrder
+        });
+        this.searchModels.sort((a, b) => a.displayOrder - b.displayOrder);
+    }
+
+    /**
+     * @returns all registered models for the UI.
+     */
+    public getRegisteredModels(): SearchModel[] {
+        return this.searchModels.map(searchModel => ({
+            collectionString: searchModel.collectionString,
+            verboseNameSingular: searchModel.verboseNameSingular,
+            verboseNamePlural: searchModel.verboseNamePlural
+        }));
+    }
+
+    /**
+     * Does the actual searching.
+     *
+     * @param query The search query
+     * @param inCollectionStrings All connection strings which should be used for searching.
+     * @returns All search results.
+     */
+    public search(query: string, inCollectionStrings: string[]): SearchResult[] {
+        query = query.toLowerCase();
+        return this.searchModels
+            .filter(s => inCollectionStrings.includes(s.collectionString))
+            .map(searchModel => {
+                const results = this.DS.filter(searchModel.ctor, model =>
+                    model.formatForSearch().some(text => text.toLowerCase().includes(query))
+                );
+                return {
+                    collectionString: searchModel.collectionString,
+                    verboseName: results.length === 1 ? searchModel.verboseNameSingular : searchModel.verboseNamePlural,
+                    models: results
+                };
+            });
+    }
+}
diff --git a/client/src/app/shared/models/agenda/item.ts b/client/src/app/shared/models/agenda/item.ts
index 0bf57ee3f..2ce8f7270 100644
--- a/client/src/app/shared/models/agenda/item.ts
+++ b/client/src/app/shared/models/agenda/item.ts
@@ -41,7 +41,7 @@ export class Item extends ProjectableBaseModel {
     public parent_id: number;
 
     public constructor(input?: any) {
-        super('agenda/item', input);
+        super('agenda/item', 'Item', input);
     }
 
     public deserialize(input: any): void {
diff --git a/client/src/app/shared/models/assignments/assignment.ts b/client/src/app/shared/models/assignments/assignment.ts
index 40931e2b6..c5dc2208f 100644
--- a/client/src/app/shared/models/assignments/assignment.ts
+++ b/client/src/app/shared/models/assignments/assignment.ts
@@ -1,6 +1,7 @@
 import { AssignmentUser } from './assignment-user';
 import { Poll } from './poll';
 import { AgendaBaseModel } from '../base/agenda-base-model';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of an assignment.
@@ -19,7 +20,7 @@ export class Assignment extends AgendaBaseModel {
     public tags_id: number[];
 
     public constructor(input?: any) {
-        super('assignments/assignment', 'Assignment', input);
+        super('assignments/assignment', 'Election', input);
     }
 
     public get candidateIds(): number[] {
@@ -52,6 +53,10 @@ export class Assignment extends AgendaBaseModel {
         return this.title;
     }
 
+    public formatForSearch(): SearchRepresentation {
+        return [this.title, this.description];
+    }
+
     public getDetailStateURL(): string {
         return 'TODO';
     }
diff --git a/client/src/app/shared/models/base/agenda-base-model.ts b/client/src/app/shared/models/base/agenda-base-model.ts
index 755a7bfa7..38abdb1c4 100644
--- a/client/src/app/shared/models/base/agenda-base-model.ts
+++ b/client/src/app/shared/models/base/agenda-base-model.ts
@@ -1,34 +1,43 @@
 import { AgendaInformation } from './agenda-information';
 import { ProjectableBaseModel } from './projectable-base-model';
+import { Searchable } from './searchable';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * A base model for models, that can be content objects in the agenda. Provides title and navigation
  * information for the agenda.
  */
-export abstract class AgendaBaseModel extends ProjectableBaseModel implements AgendaInformation {
-    protected verboseName: string;
-
+export abstract class AgendaBaseModel extends ProjectableBaseModel implements AgendaInformation, Searchable {
     /**
-     * A Model that inherits from this class should provide a verbose name. It's used by creating
-     * the agenda title with type.
+     * A model that can be a content object of an agenda item.
      * @param collectionString
      * @param verboseName
      * @param input
      */
     protected constructor(collectionString: string, verboseName: string, input?: any) {
-        super(collectionString, input);
-        this.verboseName = verboseName;
+        super(collectionString, verboseName, input);
     }
 
+    /**
+     * @returns the agenda title
+     */
     public getAgendaTitle(): string {
         return this.getTitle();
     }
 
+    /**
+     * @return the agenda title with the verbose name of the content object
+     */
     public getAgendaTitleWithType(): string {
         // Return the agenda title with the model's verbose name appended
-        return this.getAgendaTitle() + ' (' + this.verboseName + ')';
+        return this.getAgendaTitle() + ' (' + this.getVerboseName() + ')';
     }
 
+    /**
+     * Should return a string representation of the object, so there can be searched for.
+     */
+    public abstract formatForSearch(): SearchRepresentation;
+
     /**
      * Should return the URL to the detail view. Used for the agenda, that the
      * user can navigate to the content object.
diff --git a/client/src/app/shared/models/base/agenda-information.ts b/client/src/app/shared/models/base/agenda-information.ts
index 832f1bd45..bca537cf8 100644
--- a/client/src/app/shared/models/base/agenda-information.ts
+++ b/client/src/app/shared/models/base/agenda-information.ts
@@ -1,7 +1,9 @@
+import { DetailNavigable } from "./detail-navigable";
+
 /**
  * An Interface for all extra information needed for content objects of items.
  */
-export interface AgendaInformation {
+export interface AgendaInformation extends DetailNavigable {
     /**
      * Should return the title for the agenda list view.
      */
@@ -11,9 +13,4 @@ export interface AgendaInformation {
      * Should return the title for the list of speakers view.
      */
     getAgendaTitleWithType(): string;
-
-    /**
-     * Get the url for the detail view, so in the agenda the user can navigate to it.
-     */
-    getDetailStateURL(): string;
 }
diff --git a/client/src/app/shared/models/base/base-model.ts b/client/src/app/shared/models/base/base-model.ts
index 26d90f84d..e76283565 100644
--- a/client/src/app/shared/models/base/base-model.ts
+++ b/client/src/app/shared/models/base/base-model.ts
@@ -20,6 +20,20 @@ export abstract class BaseModel<T = object> extends OpenSlidesComponent
      */
     protected _collectionString: string;
 
+    /**
+     * returns the collectionString.
+     *
+     * The server and the dataStore use it to identify the collection.
+     */
+    public get collectionString(): string {
+        return this._collectionString;
+    }
+
+    /**
+     * Children should also have a verbose name for generic display purposes
+     */
+    protected _verboseName: string;
+
     /**
      * force children of BaseModel to have an id
      */
@@ -27,10 +41,15 @@ export abstract class BaseModel<T = object> extends OpenSlidesComponent
 
     /**
      * constructor that calls super from parent class
+     *
+     * @param collectionString
+     * @param verboseName
+     * @param input
      */
-    protected constructor(collectionString: string, input?: any) {
+    protected constructor(collectionString: string, verboseName: string, input?: any) {
         super();
         this._collectionString = collectionString;
+        this._verboseName = verboseName;
 
         if (input) {
             this.changeNullValuesToUndef(input);
@@ -68,12 +87,19 @@ export abstract class BaseModel<T = object> extends OpenSlidesComponent
     }
 
     /**
-     * returns the collectionString.
+     * Returns the verbose name. Makes it plural by adding a 's'.
      *
-     * The server and the dataStore use it to identify the collection.
+     * @param plural If the name should be plural
+     * @returns the verbose name of the model
      */
-    public get collectionString(): string {
-        return this._collectionString;
+    public getVerboseName(plural: boolean = false): string {
+        if (plural) {
+            return this._verboseName + 's'; // I love english. This works for all our models (participantS, electionS,
+            // topicS, motionS, (media)fileS, motion blockS, commentS, personal noteS, projectorS, messageS, countdownS, ...)
+            // Just categorIES need to overwrite this...
+        } else {
+            return this._verboseName
+        }
     }
 
     /**
diff --git a/client/src/app/shared/models/base/detail-navigable.ts b/client/src/app/shared/models/base/detail-navigable.ts
new file mode 100644
index 000000000..4a7949396
--- /dev/null
+++ b/client/src/app/shared/models/base/detail-navigable.ts
@@ -0,0 +1,9 @@
+/**
+ * One can navigate to the detail page of every object implementing this interface.
+ */
+export interface DetailNavigable {
+    /**
+     * Get the url for the detail view, so the user can navigate to it.
+     */
+    getDetailStateURL(): string;
+}
diff --git a/client/src/app/shared/models/base/projectable-base-model.ts b/client/src/app/shared/models/base/projectable-base-model.ts
index afc57c66e..7ee0bb370 100644
--- a/client/src/app/shared/models/base/projectable-base-model.ts
+++ b/client/src/app/shared/models/base/projectable-base-model.ts
@@ -2,8 +2,15 @@ import { BaseModel } from './base-model';
 import { Projectable } from './projectable';
 
 export abstract class ProjectableBaseModel extends BaseModel<ProjectableBaseModel> implements Projectable {
-    protected constructor(collectionString: string, input?: any) {
-        super(collectionString, input);
+    /**
+     * A model which can be projected. This class give basic implementation for the projector.
+     *
+     * @param collectionString
+     * @param verboseName
+     * @param input
+     */
+    protected constructor(collectionString: string, verboseName: string, input?: any) {
+        super(collectionString, verboseName, input);
     }
 
     /**
@@ -11,6 +18,9 @@ export abstract class ProjectableBaseModel extends BaseModel<ProjectableBaseMode
      */
     public project(): void {}
 
+    /**
+     * @returns the projector title.
+     */
     public getProjectorTitle(): string {
         return this.getTitle();
     }
diff --git a/client/src/app/shared/models/base/searchable.ts b/client/src/app/shared/models/base/searchable.ts
new file mode 100644
index 000000000..7d4fc6bb2
--- /dev/null
+++ b/client/src/app/shared/models/base/searchable.ts
@@ -0,0 +1,21 @@
+import { DetailNavigable } from './detail-navigable';
+import { SearchRepresentation } from '../../../core/services/search.service';
+
+/**
+ * Asserts, if the given object is searchable.
+ *
+ * @param object The object to check
+ */
+export function isSearchable(object: any): object is Searchable {
+    return (<Searchable>object).formatForSearch !== undefined;
+}
+
+/**
+ * One can search for every object implementing this interface.
+ */
+export interface Searchable extends DetailNavigable {
+    /**
+     * Should return strings that represents the object.
+     */
+    formatForSearch: () => SearchRepresentation;
+}
diff --git a/client/src/app/shared/models/core/chat-message.ts b/client/src/app/shared/models/core/chat-message.ts
index c18835264..f13226cfb 100644
--- a/client/src/app/shared/models/core/chat-message.ts
+++ b/client/src/app/shared/models/core/chat-message.ts
@@ -11,7 +11,7 @@ export class ChatMessage extends BaseModel<ChatMessage> {
     public user_id: number;
 
     public constructor(input?: any) {
-        super('core/chat-message', input);
+        super('core/chat-message', 'Chatmessage', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/core/config.ts b/client/src/app/shared/models/core/config.ts
index 402235585..9f7d5ee74 100644
--- a/client/src/app/shared/models/core/config.ts
+++ b/client/src/app/shared/models/core/config.ts
@@ -10,7 +10,7 @@ export class Config extends BaseModel {
     public value: Object;
 
     public constructor(input?: any) {
-        super('core/config', input);
+        super('core/config', 'Config', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/core/countdown.ts b/client/src/app/shared/models/core/countdown.ts
index 309ebedee..66da83a9e 100644
--- a/client/src/app/shared/models/core/countdown.ts
+++ b/client/src/app/shared/models/core/countdown.ts
@@ -12,7 +12,7 @@ export class Countdown extends ProjectableBaseModel {
     public running: boolean;
 
     public constructor(input?: any) {
-        super('core/countdown');
+        super('core/countdown', 'Countdown', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/core/history.ts b/client/src/app/shared/models/core/history.ts
index fc9e49018..fe1233b81 100644
--- a/client/src/app/shared/models/core/history.ts
+++ b/client/src/app/shared/models/core/history.ts
@@ -30,7 +30,7 @@ export class History extends BaseModel {
     }
 
     public constructor(input?: any) {
-        super('core/history', input);
+        super('core/history', 'History', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/core/projector-message.ts b/client/src/app/shared/models/core/projector-message.ts
index d1d4f7208..cdb086d28 100644
--- a/client/src/app/shared/models/core/projector-message.ts
+++ b/client/src/app/shared/models/core/projector-message.ts
@@ -9,7 +9,7 @@ export class ProjectorMessage extends ProjectableBaseModel {
     public message: string;
 
     public constructor(input?: any) {
-        super('core/projector-message', input);
+        super('core/projector-message', 'Message', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/core/projector.ts b/client/src/app/shared/models/core/projector.ts
index e3686278a..8164b35af 100644
--- a/client/src/app/shared/models/core/projector.ts
+++ b/client/src/app/shared/models/core/projector.ts
@@ -16,7 +16,7 @@ export class Projector extends BaseModel<Projector> {
     public projectiondefaults: Object[];
 
     public constructor(input?: any) {
-        super('core/projector', input);
+        super('core/projector', 'Projector', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/core/tag.ts b/client/src/app/shared/models/core/tag.ts
index 79b00d027..149e7cbd8 100644
--- a/client/src/app/shared/models/core/tag.ts
+++ b/client/src/app/shared/models/core/tag.ts
@@ -1,18 +1,27 @@
 import { BaseModel } from '../base/base-model';
+import { Searchable } from '../base/searchable';
 
 /**
  * Representation of a tag.
  * @ignore
  */
-export class Tag extends BaseModel<Tag> {
+export class Tag extends BaseModel<Tag> implements Searchable {
     public id: number;
     public name: string;
 
     public constructor(input?: any) {
-        super('core/tag', input);
+        super('core/tag', 'Tag', input);
     }
 
     public getTitle(): string {
         return this.name;
     }
+
+    public formatForSearch(): string[] {
+        return [this.name];
+    }
+
+    public getDetailStateURL(): string {
+        return '/tags';
+    }
 }
diff --git a/client/src/app/shared/models/mediafiles/mediafile.ts b/client/src/app/shared/models/mediafiles/mediafile.ts
index f6161c1c6..97c90916c 100644
--- a/client/src/app/shared/models/mediafiles/mediafile.ts
+++ b/client/src/app/shared/models/mediafiles/mediafile.ts
@@ -1,11 +1,12 @@
 import { File } from './file';
 import { ProjectableBaseModel } from '../base/projectable-base-model';
+import { Searchable } from '../base/searchable';
 
 /**
  * Representation of MediaFile. Has the nested property "File"
  * @ignore
  */
-export class Mediafile extends ProjectableBaseModel {
+export class Mediafile extends ProjectableBaseModel implements Searchable {
     public id: number;
     public title: string;
     public mediafile: File;
@@ -16,7 +17,7 @@ export class Mediafile extends ProjectableBaseModel {
     public timestamp: string;
 
     public constructor(input?: any) {
-        super('mediafiles/mediafile', input);
+        super('mediafiles/mediafile', 'Mediafile', input);
     }
 
     public deserialize(input: any): void {
@@ -36,4 +37,12 @@ export class Mediafile extends ProjectableBaseModel {
     public getTitle(): string {
         return this.title;
     }
+
+    public formatForSearch(): string[] {
+        return [this.title, this.mediafile.name];
+    }
+
+    public getDetailStateURL(): string {
+        return this.getDownloadUrl();
+    }
 }
diff --git a/client/src/app/shared/models/motions/category.ts b/client/src/app/shared/models/motions/category.ts
index ffbaeaef3..aed2a86fb 100644
--- a/client/src/app/shared/models/motions/category.ts
+++ b/client/src/app/shared/models/motions/category.ts
@@ -1,19 +1,52 @@
 import { BaseModel } from '../base/base-model';
+import { Searchable } from '../base/searchable';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of a motion category. Has the nested property "File"
  * @ignore
  */
-export class Category extends BaseModel<Category> {
+export class Category extends BaseModel<Category> implements Searchable {
     public id: number;
     public name: string;
     public prefix: string;
 
     public constructor(input?: any) {
-        super('motions/category', input);
+        super('motions/category', 'Category', input);
     }
 
     public getTitle(): string {
         return this.prefix + ' - ' + this.name;
     }
+
+    /**
+     * Returns the verbose name of this model.
+     *
+     * @override
+     * @param plural If the name should be plural
+     * @param The verbose name
+     */
+    public getVerboseName(plural: boolean = false): string {
+        if (plural) {
+            return 'Categories';
+        } else {
+            return this._verboseName;
+        }
+    }
+
+    /**
+     * Formats the category for search
+     *
+     * @override
+     */
+    public formatForSearch(): SearchRepresentation {
+        return [this.getTitle()];
+    }
+
+    /**
+     * TODO: add an id as url parameter, so the category auto-opens.
+     */
+    public getDetailStateURL(): string {
+        return '/motions/category';
+    }
 }
diff --git a/client/src/app/shared/models/motions/motion-block.ts b/client/src/app/shared/models/motions/motion-block.ts
index d2e6885bc..49b2b3256 100644
--- a/client/src/app/shared/models/motions/motion-block.ts
+++ b/client/src/app/shared/models/motions/motion-block.ts
@@ -1,4 +1,5 @@
 import { AgendaBaseModel } from '../base/agenda-base-model';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of a motion block.
@@ -17,6 +18,15 @@ export class MotionBlock extends AgendaBaseModel {
         return this.title;
     }
 
+    /**
+     * Formats the category for search
+     *
+     * @override
+     */
+    public formatForSearch(): SearchRepresentation {
+        return [this.title];
+    }
+
     /**
      * Get the URL to the motion block
      *
diff --git a/client/src/app/shared/models/motions/motion-change-reco.ts b/client/src/app/shared/models/motions/motion-change-reco.ts
index 8abd10c19..bc1a4a6c5 100644
--- a/client/src/app/shared/models/motions/motion-change-reco.ts
+++ b/client/src/app/shared/models/motions/motion-change-reco.ts
@@ -17,7 +17,7 @@ export class MotionChangeReco extends BaseModel<MotionChangeReco> {
     public creation_time: string;
 
     public constructor(input?: any) {
-        super('motions/motion-change-recommendation', input);
+        super('motions/motion-change-recommendation', 'Change recommendation', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/motions/motion-comment-section.ts b/client/src/app/shared/models/motions/motion-comment-section.ts
index 7b38f191f..aa68240da 100644
--- a/client/src/app/shared/models/motions/motion-comment-section.ts
+++ b/client/src/app/shared/models/motions/motion-comment-section.ts
@@ -11,7 +11,7 @@ export class MotionCommentSection extends BaseModel<MotionCommentSection> {
     public write_groups_id: number[];
 
     public constructor(input?: any) {
-        super('motions/motion-comment-section', input);
+        super('motions/motion-comment-section', 'Comment section', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/motions/motion.ts b/client/src/app/shared/models/motions/motion.ts
index a6b06d847..e7205f80c 100644
--- a/client/src/app/shared/models/motions/motion.ts
+++ b/client/src/app/shared/models/motions/motion.ts
@@ -2,6 +2,7 @@ import { MotionSubmitter } from './motion-submitter';
 import { MotionLog } from './motion-log';
 import { MotionComment } from './motion-comment';
 import { AgendaBaseModel } from '../base/agenda-base-model';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of Motion.
@@ -75,10 +76,23 @@ export class Motion extends AgendaBaseModel {
         if (this.identifier) {
             return 'Motion ' + this.identifier;
         } else {
-            return this.getTitle() + ' (' + this.verboseName + ')';
+            return this.getTitle() + ' (' + this.getVerboseName() + ')';
         }
     }
 
+    /**
+     * Formats the category for search
+     *
+     * @override
+     */
+    public formatForSearch(): SearchRepresentation {
+        let searchValues = [this.title, this.text, this.reason]
+        if (this.amendment_paragraphs) {
+            searchValues = searchValues.concat(this.amendment_paragraphs.filter(x => !!x));
+        }
+        return searchValues;
+    }
+
     public getDetailStateURL(): string {
         return `/motions/${this.id}`;
     }
diff --git a/client/src/app/shared/models/motions/statute-paragraph.ts b/client/src/app/shared/models/motions/statute-paragraph.ts
index 7fbb814a9..dabbf32e5 100644
--- a/client/src/app/shared/models/motions/statute-paragraph.ts
+++ b/client/src/app/shared/models/motions/statute-paragraph.ts
@@ -1,20 +1,38 @@
 import { BaseModel } from '../base/base-model';
+import { Searchable } from '../base/searchable';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of a statute paragraph.
  * @ignore
  */
-export class StatuteParagraph extends BaseModel<StatuteParagraph> {
+export class StatuteParagraph extends BaseModel<StatuteParagraph> implements Searchable {
     public id: number;
     public title: string;
     public text: string;
     public weight: number;
 
     public constructor(input?: any) {
-        super('motions/statute-paragraph', input);
+        super('motions/statute-paragraph', 'Statute paragraph', input);
     }
 
     public getTitle(): string {
         return this.title;
     }
+
+    /**
+     * Formats the category for search
+     *
+     * @override
+     */
+    public formatForSearch(): SearchRepresentation {
+        return [this.title, this.text];
+    }
+
+    /**
+     * TODO: add an id as url parameter, so the statute paragraph auto-opens.
+     */
+    public getDetailStateURL(): string {
+        return '/motions/statute-paragraphs';
+    }
 }
diff --git a/client/src/app/shared/models/motions/workflow.ts b/client/src/app/shared/models/motions/workflow.ts
index 866563fd9..babbd73ec 100644
--- a/client/src/app/shared/models/motions/workflow.ts
+++ b/client/src/app/shared/models/motions/workflow.ts
@@ -12,7 +12,7 @@ export class Workflow extends BaseModel<Workflow> {
     public first_state: number;
 
     public constructor(input?: any) {
-        super('motions/workflow', input);
+        super('motions/workflow', 'Workflow', input);
     }
 
     /**
diff --git a/client/src/app/shared/models/topics/topic.ts b/client/src/app/shared/models/topics/topic.ts
index 1c38938fb..f935455c6 100644
--- a/client/src/app/shared/models/topics/topic.ts
+++ b/client/src/app/shared/models/topics/topic.ts
@@ -1,4 +1,5 @@
 import { AgendaBaseModel } from '../base/agenda-base-model';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of a topic.
@@ -24,6 +25,15 @@ export class Topic extends AgendaBaseModel {
         return this.getAgendaTitle();
     }
 
+    /**
+     * Formats the category for search
+     *
+     * @override
+     */
+    public formatForSearch(): SearchRepresentation {
+        return [this.title, this.text];
+    }
+
     public getDetailStateURL(): string {
         return `/agenda/topics/${this.id}`;
     }
diff --git a/client/src/app/shared/models/users/group.ts b/client/src/app/shared/models/users/group.ts
index 14b790ab5..801baf359 100644
--- a/client/src/app/shared/models/users/group.ts
+++ b/client/src/app/shared/models/users/group.ts
@@ -10,7 +10,7 @@ export class Group extends BaseModel<Group> {
     public permissions: string[];
 
     public constructor(input?: any) {
-        super('users/group', input);
+        super('users/group', 'Group', input);
         if (!input) {
             // permissions are required for new groups
             this.permissions = [];
diff --git a/client/src/app/shared/models/users/personal-note.ts b/client/src/app/shared/models/users/personal-note.ts
index 61bf6f5bc..4f60b558b 100644
--- a/client/src/app/shared/models/users/personal-note.ts
+++ b/client/src/app/shared/models/users/personal-note.ts
@@ -54,7 +54,7 @@ export class PersonalNote extends BaseModel<PersonalNote> implements PersonalNot
     public notes: PersonalNotesFormat;
 
     public constructor(input: any) {
-        super('users/personal-note', input);
+        super('users/personal-note', 'Personal note', input);
     }
 
     public getTitle(): string {
diff --git a/client/src/app/shared/models/users/user.ts b/client/src/app/shared/models/users/user.ts
index 11eed4b02..6c64b2abc 100644
--- a/client/src/app/shared/models/users/user.ts
+++ b/client/src/app/shared/models/users/user.ts
@@ -1,10 +1,12 @@
 import { ProjectableBaseModel } from '../base/projectable-base-model';
+import { Searchable } from '../base/searchable';
+import { SearchRepresentation } from '../../../core/services/search.service';
 
 /**
  * Representation of a user in contrast to the operator.
  * @ignore
  */
-export class User extends ProjectableBaseModel {
+export class User extends ProjectableBaseModel implements Searchable {
     public id: number;
     public username: string;
     public title: string;
@@ -23,7 +25,7 @@ export class User extends ProjectableBaseModel {
     public default_password: string;
 
     public constructor(input?: any) {
-        super('users/user', input);
+        super('users/user', 'Participant', input);
     }
 
     public get full_name(): string {
@@ -88,4 +90,17 @@ export class User extends ProjectableBaseModel {
     public getListViewTitle(): string {
         return this.short_name;
     }
+
+    public getDetailStateURL(): string {
+        return `/users/${this.id}`;
+    }
+
+    /**
+     * Formats the category for search
+     *
+     * @override
+     */
+    public formatForSearch(): SearchRepresentation {
+        return [this.title, this.first_name, this.last_name, this.structure_level, this.number];
+    }
 }
diff --git a/client/src/app/site/agenda/agenda.config.ts b/client/src/app/site/agenda/agenda.config.ts
index 43c549bbb..ce86afa36 100644
--- a/client/src/app/site/agenda/agenda.config.ts
+++ b/client/src/app/site/agenda/agenda.config.ts
@@ -4,7 +4,7 @@ import { Topic } from '../../shared/models/topics/topic';
 
 export const AgendaAppConfig: AppConfig = {
     name: 'agenda',
-    models: [{ collectionString: 'agenda/item', model: Item }, { collectionString: 'topics/topic', model: Topic }],
+    models: [{ collectionString: 'agenda/item', model: Item }, { collectionString: 'topics/topic', model: Topic, searchOrder: 1 }],
     mainMenuEntries: [
         {
             route: '/agenda',
diff --git a/client/src/app/site/assignments/assignments.config.ts b/client/src/app/site/assignments/assignments.config.ts
index 1e161c217..12a0e672d 100644
--- a/client/src/app/site/assignments/assignments.config.ts
+++ b/client/src/app/site/assignments/assignments.config.ts
@@ -3,7 +3,7 @@ import { Assignment } from '../../shared/models/assignments/assignment';
 
 export const AssignmentsAppConfig: AppConfig = {
     name: 'assignments',
-    models: [{ collectionString: 'assignments/assignment', model: Assignment }],
+    models: [{ collectionString: 'assignments/assignment', model: Assignment, searchOrder: 3 }],
     mainMenuEntries: [
         {
             route: '/assignments',
diff --git a/client/src/app/site/base/app-config.ts b/client/src/app/site/base/app-config.ts
index e2ba1bd34..0323f50b1 100644
--- a/client/src/app/site/base/app-config.ts
+++ b/client/src/app/site/base/app-config.ts
@@ -1,5 +1,17 @@
 import { ModelConstructor, BaseModel } from '../../shared/models/base/base-model';
 import { MainMenuEntry } from '../../core/services/main-menu.service';
+import { Searchable } from '../../shared/models/base/searchable';
+
+export interface ModelEntry {
+    collectionString: string;
+    model: ModelConstructor<BaseModel>;
+}
+
+export interface SearchableModelEntry {
+    collectionString: string;
+    model: new (...args: any[]) => (BaseModel & Searchable);
+    searchOrder: number;
+}
 
 /**
  * The configuration of an app.
@@ -13,10 +25,7 @@ export interface AppConfig {
     /**
      * All models, that should be registered.
      */
-    models?: {
-        collectionString: string;
-        model: ModelConstructor<BaseModel>;
-    }[];
+    models?: (ModelEntry | SearchableModelEntry)[];
 
     /**
      * Main menu entries.
diff --git a/client/src/app/site/common/common-routing.module.ts b/client/src/app/site/common/common-routing.module.ts
index 87f463e52..91eadfc70 100644
--- a/client/src/app/site/common/common-routing.module.ts
+++ b/client/src/app/site/common/common-routing.module.ts
@@ -3,6 +3,7 @@ import { Routes, RouterModule } from '@angular/router';
 import { PrivacyPolicyComponent } from './components/privacy-policy/privacy-policy.component';
 import { StartComponent } from './components/start/start.component';
 import { LegalNoticeComponent } from './components/legal-notice/legal-notice.component';
+import { SearchComponent } from './components/search/search.component';
 
 const routes: Routes = [
     {
@@ -16,6 +17,10 @@ const routes: Routes = [
     {
         path: 'privacypolicy',
         component: PrivacyPolicyComponent
+    },
+    {
+        path: 'search',
+        component: SearchComponent
     }
 ];
 
diff --git a/client/src/app/site/common/common.module.ts b/client/src/app/site/common/common.module.ts
index b5fb513ce..ece0b0067 100644
--- a/client/src/app/site/common/common.module.ts
+++ b/client/src/app/site/common/common.module.ts
@@ -6,9 +6,10 @@ import { SharedModule } from '../../shared/shared.module';
 import { PrivacyPolicyComponent } from './components/privacy-policy/privacy-policy.component';
 import { StartComponent } from './components/start/start.component';
 import { LegalNoticeComponent } from './components/legal-notice/legal-notice.component';
+import { SearchComponent } from './components/search/search.component';
 
 @NgModule({
     imports: [AngularCommonModule, CommonRoutingModule, SharedModule],
-    declarations: [PrivacyPolicyComponent, StartComponent, LegalNoticeComponent]
+    declarations: [PrivacyPolicyComponent, StartComponent, LegalNoticeComponent, SearchComponent]
 })
 export class CommonModule {}
diff --git a/client/src/app/site/common/components/search/search.component.html b/client/src/app/site/common/components/search/search.component.html
new file mode 100644
index 000000000..d576ad985
--- /dev/null
+++ b/client/src/app/site/common/components/search/search.component.html
@@ -0,0 +1,58 @@
+<os-head-bar [nav]="false" [goBack]="true">
+    <!-- Title -->
+    <div class="title-slot"><h2 translate>Search results</h2></div>
+    <!-- Menu -->
+    <div class="menu-slot">
+        <button type="button" mat-icon-button [matMenuTriggerFor]="menu"><mat-icon>more_vert</mat-icon></button>
+    </div>
+</os-head-bar>
+
+<!-- search-field -->
+<div class="search-field">
+    <form [formGroup]="quickSearchform">
+        <mat-form-field>
+            <input matInput formControlName="query" (keyup)="quickSearch()" />
+            <mat-icon matSuffix>search</mat-icon>
+        </mat-form-field>
+    </form>
+</div>
+
+<mat-menu #menu="matMenu">
+    <button mat-menu-item *ngFor="let registeredModel of registeredModels" (click)="toggleModel(registeredModel)">
+        <mat-checkbox [checked]="registeredModel.enabled" (click)="$event.preventDefault()">
+            <span translate>{{ registeredModel.verboseNamePlural }}</span>
+        </mat-checkbox>
+    </button>
+</mat-menu>
+
+<div class="noSearchResults" *ngIf="searchResultCount === 0">
+    <span translate>No search result found for</span> "{{ query }}"
+</div>
+
+<ng-container *ngIf="searchResultCount > 0">
+    <h3>
+        <span translate>Found</span> {{ searchResultCount }}
+        <span *ngIf="searchResultCount === 1" translate>result</span>
+        <span *ngIf="searchResultCount > 1" translate>results</span>
+    </h3>
+
+    <ng-container *ngFor="let searchResult of searchResults">
+        <mat-card *ngIf="searchResult.models.length > 0">
+            <mat-card-title>
+                {{ searchResult.models.length }} {{ searchResult.verboseName | translate }}
+            </mat-card-title>
+            <mat-card-content>
+                <mat-list>
+                    <mat-list-item *ngFor="let model of searchResult.models">
+                        <a
+                            [routerLink]="model.getDetailStateURL()"
+                            target="{{ searchResult.collectionString === 'mediafiles/mediafile' ? '_blank' : '' }}"
+                        >
+                            {{ model.getTitle() }}
+                        </a>
+                    </mat-list-item>
+                </mat-list>
+            </mat-card-content>
+        </mat-card>
+    </ng-container>
+</ng-container>
diff --git a/client/src/app/site/common/components/search/search.component.scss b/client/src/app/site/common/components/search/search.component.scss
new file mode 100644
index 000000000..5110c9545
--- /dev/null
+++ b/client/src/app/site/common/components/search/search.component.scss
@@ -0,0 +1,20 @@
+.search-field {
+    width: 100%;
+
+    form {
+        width: 80%;
+        margin: 8px auto;
+    }
+
+    mat-form-field {
+        width: 100%;
+    }
+}
+
+.noSearchResults {
+    text-align: center;
+}
+
+mat-card {
+    margin-bottom: 10px;
+}
diff --git a/client/src/app/site/common/components/search/search.component.spec.ts b/client/src/app/site/common/components/search/search.component.spec.ts
new file mode 100644
index 000000000..08e7aff64
--- /dev/null
+++ b/client/src/app/site/common/components/search/search.component.spec.ts
@@ -0,0 +1,26 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { SearchComponent } from './search.component';
+import { E2EImportsModule } from '../../../../../e2e-imports.module';
+
+describe('SearchComponent', () => {
+    let component: SearchComponent;
+    let fixture: ComponentFixture<SearchComponent>;
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+            imports: [E2EImportsModule],
+            declarations: [SearchComponent]
+        }).compileComponents();
+    }));
+
+    beforeEach(() => {
+        fixture = TestBed.createComponent(SearchComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
+
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
+});
diff --git a/client/src/app/site/common/components/search/search.component.ts b/client/src/app/site/common/components/search/search.component.ts
new file mode 100644
index 000000000..50d4de558
--- /dev/null
+++ b/client/src/app/site/common/components/search/search.component.ts
@@ -0,0 +1,143 @@
+import { Component, OnInit } from '@angular/core';
+import { ActivatedRoute, Router } from '@angular/router';
+import { FormGroup, FormControl } from '@angular/forms';
+import { Title } from '@angular/platform-browser';
+import { MatSnackBar } from '@angular/material';
+
+import { Subject } from 'rxjs';
+import { auditTime, debounceTime } from 'rxjs/operators';
+import { TranslateService } from '@ngx-translate/core';
+
+import { DataStoreService } from 'app/core/services/data-store.service';
+import { SearchService, SearchModel, SearchResult } from 'app/core/services/search.service';
+import { BaseViewComponent } from '../../../base/base-view';
+
+type SearchModelEnabled = SearchModel & { enabled: boolean; };
+
+/**
+ * Component for the full search text.
+ */
+@Component({
+    selector: 'os-search',
+    templateUrl: './search.component.html',
+    styleUrls: ['./search.component.scss']
+})
+export class SearchComponent extends BaseViewComponent implements OnInit {
+    /**
+     * the search term
+     */
+    public query: string;
+
+    /**
+     * Holds the typed search query.
+     */
+    public quickSearchform: FormGroup;
+
+    /**
+     * The amout of search results.
+     */
+    public searchResultCount: number;
+
+    /**
+     * The search results for the ui
+     */
+    public searchResults: SearchResult[];
+
+    /**
+     * A list of models, that are registered to be searched. Used for
+     * enable and disable these models.
+     */
+    public registeredModels: (SearchModelEnabled)[];
+
+    /**
+     * This subject is used for the quicksearch input. It is used to debounce the input.
+     */
+    private quickSearchSubject = new Subject<string>();
+
+    /**
+     * Inits the quickSearchForm, gets the registered models from the search service
+     * and watches the data store for any changes to initiate a new search if models changes.
+     *
+     * @param title
+     * @param translate
+     * @param matSnackBar
+     * @param DS DataStorService
+     * @param activatedRoute determine the search term from the URL
+     * @param router To change the query in the url
+     * @param searchService For searching in the models
+     */
+    public constructor(
+        title: Title,
+        translate: TranslateService,
+        matSnackBar: MatSnackBar,
+        private DS: DataStoreService,
+        private activatedRoute: ActivatedRoute,
+        private router: Router,
+        private searchService: SearchService
+    ) {
+        super(title, translate, matSnackBar);
+        this.quickSearchform = new FormGroup({ query: new FormControl([]) });
+
+        this.registeredModels = this.searchService.getRegisteredModels().map(rm => ({...rm, enabled: true}));
+
+        this.DS.changedOrDeletedObservable.pipe(auditTime(1)).subscribe(() => this.search());
+        this.quickSearchSubject.pipe(debounceTime(250)).subscribe(query => this.search(query));
+    }
+
+     /**
+      * Take the search query from the URL and does the initial search.
+      */
+     public ngOnInit(): void {
+        super.setTitle('Search');
+        this.query = this.activatedRoute.snapshot.queryParams.query;
+        this.quickSearchform.get('query').setValue(this.query);
+        this.search();
+    }
+
+    /**
+     * Searches for the query in `this.query` or the query given.
+     *
+     * @param query optional, if given, `this.query` will be set to this value
+     */
+    public search(query?: string): void {
+        if (query) {
+            this.query = query;
+        }
+        if (!this.query) {
+            return;
+        }
+
+        // Just search for enabled models.
+        const collectionStrings = this.registeredModels.filter(rm => rm.enabled).map(rm => rm.collectionString);
+
+        // Get all results
+        this.searchResults = this.searchService.search(this.query, collectionStrings);
+
+        // Because the results are per model, we need to accumulate the total number of all search results.
+        this.searchResultCount = this.searchResults.map(sr => sr.models.length).reduce((acc, current) => acc + current);
+
+        // Update the URL.
+        this.router.navigate([], {
+            relativeTo: this.activatedRoute,
+            queryParams: { query: this.query },
+            replaceUrl: true
+        });
+    }
+
+    /**
+     * Handler for the quick search input. Emits the typed value to the `quickSearchSubject`.
+     */
+    public quickSearch(): void {
+        this.quickSearchSubject.next(this.quickSearchform.get('query').value);
+    }
+
+    /**
+     * Toggles a model, if it should be used during the search. Initiates a new search afterwards.
+     *
+     * @param registeredModel The model to toggle
+     */
+    public toggleModel(registeredModel: SearchModelEnabled): void {
+        registeredModel.enabled = !registeredModel.enabled;
+        this.search();
+    }
+}
diff --git a/client/src/app/site/mediafiles/mediafile.config.ts b/client/src/app/site/mediafiles/mediafile.config.ts
index 91c19130a..30e985dc1 100644
--- a/client/src/app/site/mediafiles/mediafile.config.ts
+++ b/client/src/app/site/mediafiles/mediafile.config.ts
@@ -3,7 +3,7 @@ import { Mediafile } from '../../shared/models/mediafiles/mediafile';
 
 export const MediafileAppConfig: AppConfig = {
     name: 'mediafiles',
-    models: [{ collectionString: 'mediafiles/mediafile', model: Mediafile }],
+    models: [{ collectionString: 'mediafiles/mediafile', model: Mediafile, searchOrder: 5 }],
     mainMenuEntries: [
         {
             route: '/mediafiles',
diff --git a/client/src/app/site/motions/motions.config.ts b/client/src/app/site/motions/motions.config.ts
index 59a042e6b..9bf4a76a3 100644
--- a/client/src/app/site/motions/motions.config.ts
+++ b/client/src/app/site/motions/motions.config.ts
@@ -10,13 +10,13 @@ import { StatuteParagraph } from '../../shared/models/motions/statute-paragraph'
 export const MotionsAppConfig: AppConfig = {
     name: 'motions',
     models: [
-        { collectionString: 'motions/motion', model: Motion },
-        { collectionString: 'motions/category', model: Category },
+        { collectionString: 'motions/motion', model: Motion, searchOrder: 2 },
+        { collectionString: 'motions/category', model: Category, searchOrder: 6 },
         { collectionString: 'motions/workflow', model: Workflow },
         { collectionString: 'motions/motion-comment-section', model: MotionCommentSection },
         { collectionString: 'motions/motion-change-recommendation', model: MotionChangeReco },
-        { collectionString: 'motions/motion-block', model: MotionBlock },
-        { collectionString: 'motions/statute-paragraph', model: StatuteParagraph }
+        { collectionString: 'motions/motion-block', model: MotionBlock, searchOrder: 7 },
+        { collectionString: 'motions/statute-paragraph', model: StatuteParagraph, searchOrder: 9 }
     ],
     mainMenuEntries: [
         {
diff --git a/client/src/app/site/site-routing.module.ts b/client/src/app/site/site-routing.module.ts
index 9575dd338..94f829ac3 100644
--- a/client/src/app/site/site-routing.module.ts
+++ b/client/src/app/site/site-routing.module.ts
@@ -51,6 +51,7 @@ const routes: Routes = [
                 path: 'history',
                 loadChildren: './history/history.module#HistoryModule'
             }
+
         ],
         canActivateChild: [AuthGuard]
     }
diff --git a/client/src/app/site/site.component.html b/client/src/app/site/site.component.html
index 53a2e6072..6777e5ea6 100644
--- a/client/src/app/site/site.component.html
+++ b/client/src/app/site/site.component.html
@@ -2,64 +2,88 @@
     <span translate>You are using the history mode of OpenSlides. Changes will not be saved.</span>
     <a (click)="timeTravel.resumeTime()" translate>Exit</a>
 </div>
-<mat-sidenav-container #siteContainer class='main-container' (backdropClick)="toggleSideNav()">
-    <mat-sidenav #sideNav [mode]="vp.isMobile ? 'push' : 'side'" [opened]='!vp.isMobile' disableClose='!vp.isMobile'
-        class="side-panel">
-        <mat-toolbar class='nav-toolbar'>
+<mat-sidenav-container #siteContainer class="main-container" (backdropClick)="toggleSideNav()">
+    <mat-sidenav
+        #sideNav
+        [mode]="vp.isMobile ? 'push' : 'side'"
+        [opened]="!vp.isMobile"
+        disableClose="!vp.isMobile"
+        class="side-panel"
+    >
+        <mat-toolbar class="nav-toolbar">
             <!-- logo -->
-            <mat-toolbar-row class='os-logo-container' routerLink='/' (click)="toggleSideNav()"></mat-toolbar-row>
+            <mat-toolbar-row class="os-logo-container" routerLink="/" (click)="toggleSideNav()"></mat-toolbar-row>
         </mat-toolbar>
 
         <!-- User Menu -->
-        <mat-expansion-panel class='user-menu mat-elevation-z0'>
+        <mat-expansion-panel class="user-menu mat-elevation-z0">
             <mat-expansion-panel-header>
                 <!-- Get the username from operator -->
-                {{username}}
+                {{ username }}
             </mat-expansion-panel-header>
             <mat-nav-list>
                 <a mat-list-item [matMenuTriggerFor]="languageMenu">
                     <mat-icon>language</mat-icon>
-                    <span> {{getLangName(this.translate.currentLang)}} </span>
+                    <span> {{ getLangName(this.translate.currentLang) }} </span>
                 </a>
-                <a *ngIf="isLoggedIn" (click)='editProfile()' mat-list-item>
+                <a *ngIf="isLoggedIn" (click)="editProfile()" mat-list-item>
                     <mat-icon>person</mat-icon>
                     <span translate>Edit profile</span>
                 </a>
-                <a *ngIf="isLoggedIn" (click)='changePassword()' mat-list-item>
+                <a *ngIf="isLoggedIn" (click)="changePassword()" mat-list-item>
                     <mat-icon>vpn_key</mat-icon>
                     <span translate>Change password</span>
                 </a>
                 <mat-divider></mat-divider>
-                <a *ngIf="isLoggedIn" (click)='logout()' mat-list-item>
+                <a *ngIf="isLoggedIn" (click)="logout()" mat-list-item>
                     <mat-icon>exit_to_app</mat-icon>
                     <span translate>Logout</span>
                 </a>
-                <a *ngIf="!isLoggedIn" routerLink='/login' mat-list-item>
+                <a *ngIf="!isLoggedIn" routerLink="/login" mat-list-item>
                     <mat-icon>exit_to_app</mat-icon>
                     <span translate>Login</span>
                 </a>
             </mat-nav-list>
         </mat-expansion-panel>
-        <!-- TODO: Could use translate.getLangs() to fetch available languages-->
+        <!-- TODO: Could use translate.getLangs() to fetch available languages -->
         <mat-menu #languageMenu="matMenu">
-            <button mat-menu-item (click)='selectLang("en")' translate>English</button>
-            <button mat-menu-item (click)='selectLang("de")' translate>German</button>
-            <button mat-menu-item (click)='selectLang("cs")' translate>Czech</button>
+            <button mat-menu-item (click)="selectLang('en')" translate>English</button>
+            <button mat-menu-item (click)="selectLang('de')" translate>German</button>
+            <button mat-menu-item (click)="selectLang('cs')" translate>Czech</button>
         </mat-menu>
 
         <!-- navigation -->
-        <mat-nav-list class='main-nav'>
-            <span *ngFor="let entry of mainMenuService.entries">
-                <a [@navItemAnim] *osPerms="entry.permission" mat-list-item (click)='toggleSideNav()' [routerLink]='entry.route'
-                    routerLinkActive='active' [routerLinkActiveOptions]="{exact: entry.route === '/'}">
-                    <mat-icon>{{ entry.icon }}</mat-icon>
-                    <span>{{ entry.displayName | translate}}</span>
+        <mat-nav-list class="main-nav">
+            <form [formGroup]="searchform" (submit)="search()" *ngIf="showSearch">
+                <mat-form-field>
+                    <input matInput formControlName="query" placeholder="{{ 'Search' | translate }}" />
+                    <button mat-icon-button matSuffix><mat-icon>search</mat-icon></button>
+                </mat-form-field>
+            </form>
 
+            <span *ngFor="let entry of mainMenuService.entries">
+                <a
+                    [@navItemAnim]
+                    *osPerms="entry.permission"
+                    mat-list-item
+                    (click)="toggleSideNav()"
+                    [routerLink]="entry.route"
+                    routerLinkActive="active"
+                    [routerLinkActiveOptions]="{ exact: entry.route === '/' }"
+                >
+                    <mat-icon>{{ entry.icon }}</mat-icon>
+                    <span>{{ entry.displayName | translate }}</span>
                 </a>
             </span>
             <mat-divider></mat-divider>
-            <a [@navItemAnim] *osPerms="'core.can_see_projector'" mat-list-item routerLink='/projector'
-                routerLinkActive='active' (click)='toggleSideNav()'>
+            <a
+                [@navItemAnim]
+                *osPerms="'core.can_see_projector'"
+                mat-list-item
+                routerLink="/projector"
+                routerLinkActive="active"
+                (click)="toggleSideNav()"
+            >
                 <mat-icon>videocam</mat-icon>
                 <span translate>Projector</span>
             </a>
@@ -71,9 +95,7 @@
                 <main [@pageTransition]="o.isActivated ? o.activatedRoute : ''">
                     <router-outlet #o="outlet"></router-outlet>
                 </main>
-                <footer>
-                    <os-footer></os-footer>
-                </footer>
+                <footer><os-footer></os-footer></footer>
             </div>
         </div>
     </mat-sidenav-content>
diff --git a/client/src/app/site/site.component.scss b/client/src/app/site/site.component.scss
index fe739fe2e..e21e3ec33 100644
--- a/client/src/app/site/site.component.scss
+++ b/client/src/app/site/site.component.scss
@@ -36,6 +36,10 @@ mat-sidenav-container {
     width: 100%;
 }
 
+.main-nav form {
+    margin: 0 1em;
+}
+
 .relax {
     position: initial;
     padding-bottom: 70px;
diff --git a/client/src/app/site/site.component.ts b/client/src/app/site/site.component.ts
index e91735d5e..a76aa7f90 100644
--- a/client/src/app/site/site.component.ts
+++ b/client/src/app/site/site.component.ts
@@ -1,17 +1,18 @@
 import { Component, OnInit, ViewChild } from '@angular/core';
 import { Router, NavigationEnd } from '@angular/router';
-
-import { AuthService } from 'app/core/services/auth.service';
-import { OperatorService } from 'app/core/services/operator.service';
+import { FormGroup, FormControl } from '@angular/forms';
+import { MatDialog, MatSidenav } from '@angular/material';
 
 import { TranslateService } from '@ngx-translate/core';
-import { BaseComponent } from 'app/base.component';
-import { pageTransition, navItemAnim } from 'app/shared/animations';
-import { MatDialog, MatSidenav } from '@angular/material';
+
+import { AuthService } from '../core/services/auth.service';
+import { OperatorService } from '../core/services/operator.service';
+import { BaseComponent } from '../base.component';
+import { pageTransition, navItemAnim } from '../shared/animations';
 import { ViewportService } from '../core/services/viewport.service';
 import { MainMenuService } from '../core/services/main-menu.service';
-import { OpenSlidesStatusService } from 'app/core/services/openslides-status.service';
-import { TimeTravelService } from 'app/core/services/time-travel.service';
+import { OpenSlidesStatusService } from '../core/services/openslides-status.service';
+import { TimeTravelService } from '../core/services/time-travel.service';
 
 @Component({
     selector: 'os-site',
@@ -46,6 +47,16 @@ export class SiteComponent extends BaseComponent implements OnInit {
      */
     private swipeTime?: number;
 
+    /**
+     * Holds the typed search query.
+     */
+    public searchform: FormGroup;
+
+    /**
+     * Flag, if the search bar shoud be shown.
+     */
+    public showSearch: boolean;
+
     /**
      * Constructor
      *
@@ -80,6 +91,14 @@ export class SiteComponent extends BaseComponent implements OnInit {
             }
             this.isLoggedIn = !!user;
         });
+
+        this.searchform = new FormGroup({ query: new FormControl([]) });
+
+        this.router.events.subscribe(event => {
+            if (event instanceof NavigationEnd) {
+                this.showSearch = !this.router.url.startsWith('/search');
+            }
+        });
     }
 
     /**
@@ -184,4 +203,13 @@ export class SiteComponent extends BaseComponent implements OnInit {
             }
         }
     }
+
+    /**
+     * Handler for the search bar
+     */
+    public search(): void {
+        const query = this.searchform.get('query').value;
+        this.searchform.reset();
+        this.router.navigate(['/search'], { queryParams: { query: query } });
+    }
 }
diff --git a/client/src/app/site/tags/tag.config.ts b/client/src/app/site/tags/tag.config.ts
index c44a41a80..3ba67fff8 100644
--- a/client/src/app/site/tags/tag.config.ts
+++ b/client/src/app/site/tags/tag.config.ts
@@ -3,7 +3,7 @@ import { Tag } from '../../shared/models/core/tag';
 
 export const TagAppConfig: AppConfig = {
     name: 'tag',
-    models: [{ collectionString: 'core/tag', model: Tag }],
+    models: [{ collectionString: 'core/tag', model: Tag, searchOrder: 8 }],
     mainMenuEntries: [
         {
             route: '/tags',
diff --git a/client/src/app/site/users/users.config.ts b/client/src/app/site/users/users.config.ts
index 956b42bc1..04dafea67 100644
--- a/client/src/app/site/users/users.config.ts
+++ b/client/src/app/site/users/users.config.ts
@@ -6,7 +6,7 @@ import { PersonalNote } from '../../shared/models/users/personal-note';
 export const UsersAppConfig: AppConfig = {
     name: 'users',
     models: [
-        { collectionString: 'users/user', model: User },
+        { collectionString: 'users/user', model: User, searchOrder: 4 },
         { collectionString: 'users/group', model: Group },
         { collectionString: 'users/personal-note', model: PersonalNote }
     ],