diff --git a/src/app/app-routing.module.ts b/src/app/app-routing.module.ts
index 52ae40f71..681958412 100644
--- a/src/app/app-routing.module.ts
+++ b/src/app/app-routing.module.ts
@@ -29,6 +29,10 @@ const routes: Routes = [
         path: 'settings',
         loadChildren: () => import('./core/settings/settings.module').then( m => m.CoreAppSettingsPageModule),
     },
+    {
+        path: 'mainmenu',
+        loadChildren: () => import('./core/mainmenu/mainmenu.module').then( m => m.CoreMainMenuModule),
+    },
 ];
 
 @NgModule({
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 7a18e7723..3296ee02d 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -13,6 +13,8 @@
 // limitations under the License.
 
 import { Component, OnInit } from '@angular/core';
+import { NavController } from '@ionic/angular';
+
 import { CoreLangProvider } from '@services/lang';
 import { CoreEvents } from '@singletons/events';
 
@@ -24,7 +26,8 @@ import { CoreEvents } from '@singletons/events';
 export class AppComponent implements OnInit {
 
     constructor(
-        private langProvider: CoreLangProvider,
+        protected langProvider: CoreLangProvider,
+        protected navCtrl: NavController,
     ) {
     }
 
@@ -34,16 +37,13 @@ export class AppComponent implements OnInit {
     ngOnInit(): void {
         CoreEvents.on(CoreEvents.LOGOUT, () => {
             // Go to sites page when user is logged out.
-            // Due to DeepLinker, we need to use the ViewCtrl instead of name.
-            // Otherwise some pages are re-created when they shouldn't.
-            // TODO
-            // CoreApp.instance.getRootNavController().setRoot(CoreLoginSitesPage);
+            this.navCtrl.navigateRoot('/login/sites');
 
             // Unload lang custom strings.
             this.langProvider.clearCustomStrings();
 
             // Remove version classes from body.
-            // TODO
+            // @todo
             // this.removeVersionClass();
         });
     }
diff --git a/src/app/core/login/login-routing.module.ts b/src/app/core/login/login-routing.module.ts
index 8b1ae6f9a..5c528b09b 100644
--- a/src/app/core/login/login-routing.module.ts
+++ b/src/app/core/login/login-routing.module.ts
@@ -23,6 +23,11 @@ import { CoreLoginSitesPage } from './pages/sites/sites.page';
 const routes: Routes = [
     {
         path: '',
+        redirectTo: 'init',
+        pathMatch: 'full',
+    },
+    {
+        path: 'init',
         component: CoreLoginInitPage,
     },
     {
diff --git a/src/app/core/login/login.module.ts b/src/app/core/login/login.module.ts
index 5bfd7fd32..090f44698 100644
--- a/src/app/core/login/login.module.ts
+++ b/src/app/core/login/login.module.ts
@@ -27,7 +27,6 @@ import { CoreLoginCredentialsPage } from './pages/credentials/credentials.page';
 import { CoreLoginInitPage } from './pages/init/init.page';
 import { CoreLoginSitePage } from './pages/site/site.page';
 import { CoreLoginSitesPage } from './pages/sites/sites.page';
-import { CoreLoginHelperProvider } from './services/helper';
 
 @NgModule({
     imports: [
@@ -47,8 +46,5 @@ import { CoreLoginHelperProvider } from './services/helper';
         CoreLoginSitePage,
         CoreLoginSitesPage,
     ],
-    providers: [
-        CoreLoginHelperProvider,
-    ],
 })
 export class CoreLoginModule {}
diff --git a/src/app/core/login/pages/credentials/credentials.page.ts b/src/app/core/login/pages/credentials/credentials.page.ts
index d189c504f..8ff4ad4e2 100644
--- a/src/app/core/login/pages/credentials/credentials.page.ts
+++ b/src/app/core/login/pages/credentials/credentials.page.ts
@@ -243,7 +243,7 @@ export class CoreLoginCredentialsPage implements OnInit, OnDestroy {
 
             this.siteId = id;
 
-            await CoreLoginHelper.instance.goToSiteInitialPage(undefined, undefined, undefined, undefined, this.urlToOpen);
+            await CoreLoginHelper.instance.goToSiteInitialPage({ urlToOpen: this.urlToOpen });
         } catch (error) {
             CoreLoginHelper.instance.treatUserTokenError(siteUrl, error, username, password);
 
diff --git a/src/app/core/login/pages/init/init.page.ts b/src/app/core/login/pages/init/init.page.ts
index 2391f6c98..889a7178f 100644
--- a/src/app/core/login/pages/init/init.page.ts
+++ b/src/app/core/login/pages/init/init.page.ts
@@ -15,9 +15,13 @@
 import { Component, OnInit } from '@angular/core';
 import { NavController } from '@ionic/angular';
 
-import { CoreApp } from '@services/app';
+import { CoreApp, CoreRedirectData } from '@services/app';
 import { CoreInit } from '@services/init';
 import { SplashScreen } from '@singletons/core.singletons';
+import { CoreConstants } from '@core/constants';
+import { CoreSite } from '@/app/classes/site';
+import { CoreSites } from '@/app/services/sites';
+import { CoreLoginHelper, CoreLoginHelperProvider } from '../../services/helper';
 
 /**
  * Page that displays a "splash screen" while the app is being initialized.
@@ -40,55 +44,75 @@ export class CoreLoginInitPage implements OnInit {
 
         // Check if there was a pending redirect.
         const redirectData = CoreApp.instance.getRedirect();
+
         if (redirectData.siteId) {
-            // Unset redirect data.
-            CoreApp.instance.storeRedirect('', '', {});
-
-            // Only accept the redirect if it was stored less than 20 seconds ago.
-            if (redirectData.timemodified && Date.now() - redirectData.timemodified < 20000) {
-                // if (redirectData.siteId != CoreConstants.NO_SITE_ID) {
-                //     // The redirect is pointing to a site, load it.
-                //     return this.sitesProvider.loadSite(redirectData.siteId, redirectData.page, redirectData.params)
-                //             .then((loggedIn) => {
-
-                //         if (loggedIn) {
-                //             return this.loginHelper.goToSiteInitialPage(this.navCtrl, redirectData.page, redirectData.params,
-                //                     { animate: false });
-                //         }
-                //     }).catch(() => {
-                //         // Site doesn't exist.
-                //         return this.loadPage();
-                //     });
-                // } else {
-                //     // No site to load, open the page.
-                //     return this.loginHelper.goToNoSitePage(this.navCtrl, redirectData.page, redirectData.params);
-                // }
-            }
+            await this.handleRedirect(redirectData);
+        } else {
+            await this.loadPage();
         }
 
-        await this.loadPage();
-
         // If we hide the splash screen now, the init view is still seen for an instant. Wait a bit to make sure it isn't seen.
         setTimeout(() => {
             SplashScreen.instance.hide();
         }, 100);
     }
 
+    /**
+     * Treat redirect data.
+     *
+     * @param redirectData Redirect data.
+     */
+    protected async handleRedirect(redirectData: CoreRedirectData): Promise<void> {
+        // Unset redirect data.
+        CoreApp.instance.storeRedirect('', '', {});
+
+        // Only accept the redirect if it was stored less than 20 seconds ago.
+        if (redirectData.timemodified && Date.now() - redirectData.timemodified < 20000) {
+            if (redirectData.siteId != CoreConstants.NO_SITE_ID) {
+                // The redirect is pointing to a site, load it.
+                try {
+                    const loggedIn = await CoreSites.instance.loadSite(
+                        redirectData.siteId!,
+                        redirectData.page,
+                        redirectData.params,
+                    );
+
+                    if (!loggedIn) {
+                        return;
+                    }
+
+                    return CoreLoginHelper.instance.goToSiteInitialPage({
+                        redirectPage: redirectData.page,
+                        redirectParams: redirectData.params,
+                    });
+                } catch (error) {
+                    // Site doesn't exist.
+                    return this.loadPage();
+                }
+            } else {
+                // No site to load, open the page.
+                return CoreLoginHelper.instance.goToNoSitePage(redirectData.page, redirectData.params);
+            }
+        }
+
+        return this.loadPage();
+    }
+
     /**
      * Load the right page.
      *
      * @return Promise resolved when done.
      */
     protected async loadPage(): Promise<void> {
-        // if (this.sitesProvider.isLoggedIn()) {
-        //     if (this.loginHelper.isSiteLoggedOut()) {
-        //         return this.sitesProvider.logout().then(() => {
-        //             return this.loadPage();
-        //         });
-        //     }
+        if (CoreSites.instance.isLoggedIn()) {
+            if (CoreLoginHelper.instance.isSiteLoggedOut()) {
+                await CoreSites.instance.logout();
 
-        //     return this.loginHelper.goToSiteInitialPage();
-        // }
+                return this.loadPage();
+            }
+
+            return CoreLoginHelper.instance.goToSiteInitialPage();
+        }
 
         await this.navCtrl.navigateRoot('/login/sites');
     }
diff --git a/src/app/core/login/services/helper.ts b/src/app/core/login/services/helper.ts
index e510e487f..5c7d9609b 100644
--- a/src/app/core/login/services/helper.ts
+++ b/src/app/core/login/services/helper.ts
@@ -34,11 +34,14 @@ import { CoreWSError } from '@classes/errors/wserror';
 import { makeSingleton, Translate } from '@singletons/core.singletons';
 import { CoreLogger } from '@singletons/logger';
 import { CoreUrl } from '@singletons/url';
+import { NavigationOptions } from '@ionic/angular/providers/nav-controller';
 
 /**
  * Helper provider that provides some common features regarding authentication.
  */
-@Injectable()
+@Injectable({
+    providedIn: 'root',
+})
 export class CoreLoginHelperProvider {
 
     static readonly OPEN_COURSE = 'open_course';
@@ -448,7 +451,7 @@ export class CoreLoginHelperProvider {
      * @return Promise resolved when done.
      */
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    goToNoSitePage(navCtrl: NavController, page: string, params?: Params): Promise<any> {
+    goToNoSitePage(page?: string, params?: Params): Promise<any> {
         // @todo
         return Promise.resolve();
     }
@@ -456,17 +459,11 @@ export class CoreLoginHelperProvider {
     /**
      * Go to the initial page of a site depending on 'userhomepage' setting.
      *
-     * @param navCtrl NavController to use. Defaults to app root NavController.
-     * @param page Name of the page to load after loading the main page.
-     * @param params Params to pass to the page.
-     * @param options Navigation options.
-     * @param url URL to open once the main menu is loaded.
+     * @param options Options.
      * @return Promise resolved when done.
      */
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    goToSiteInitialPage(navCtrl?: NavController, page?: string, params?: Params, options?: any, url?: string): Promise<any> {
-        // @todo
-        return Promise.resolve();
+    goToSiteInitialPage(options?: OpenMainMenuOptions): Promise<void> {
+        return this.openMainMenu(options);
     }
 
     /**
@@ -664,17 +661,32 @@ export class CoreLoginHelperProvider {
     /**
      * Open the main menu, loading a certain page.
      *
-     * @param navCtrl NavController.
-     * @param page Name of the page to load.
-     * @param params Params to pass to the page.
-     * @param options Navigation options.
-     * @param url URL to open once the main menu is loaded.
+     * @param options Options.
      * @return Promise resolved when done.
      */
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    protected openMainMenu(navCtrl: NavController, page: string, params: Params, options?: any, url?: string): Promise<any> {
-        // @todo
-        return Promise.resolve();
+    protected async openMainMenu(options?: OpenMainMenuOptions): Promise<void> {
+
+        // Due to DeepLinker, we need to remove the path from the URL before going to main menu.
+        // IonTabs checks the URL to determine which path to load for deep linking, so we clear the URL.
+        // @todo this.location.replaceState('');
+
+        if (options?.redirectPage == CoreLoginHelperProvider.OPEN_COURSE) {
+            // Load the main menu first, and then open the course.
+            try {
+                await this.navCtrl.navigateRoot('/mainmenu');
+            } finally {
+                // @todo: Open course.
+            }
+        } else {
+            // Open the main menu.
+            const queryParams: Params = Object.assign({}, options);
+            delete queryParams.navigationOptions;
+
+            await this.navCtrl.navigateRoot('/mainmenu', {
+                queryParams,
+                ...options?.navigationOptions,
+            });
+        }
     }
 
     /**
@@ -1375,3 +1387,10 @@ type StoredLoginLaunchData = {
     pageParams: Params;
     ssoUrlParams: CoreUrlParams;
 };
+
+type OpenMainMenuOptions = {
+    redirectPage?: string; // Route of the page to open in main menu. If not defined, default tab will be selected.
+    redirectParams?: Params; // Params to pass to the selected tab if any.
+    urlToOpen?: string; // URL to open once the main menu is loaded.
+    navigationOptions?: NavigationOptions; // Navigation options.
+};
diff --git a/src/app/core/mainmenu/lang/en.json b/src/app/core/mainmenu/lang/en.json
new file mode 100644
index 000000000..4ff96fbf7
--- /dev/null
+++ b/src/app/core/mainmenu/lang/en.json
@@ -0,0 +1,6 @@
+{
+    "changesite": "Change site",
+    "help": "Help",
+    "logout": "Log out",
+    "website": "Website"
+}
\ No newline at end of file
diff --git a/src/app/core/mainmenu/mainmenu-routing.module.ts b/src/app/core/mainmenu/mainmenu-routing.module.ts
new file mode 100644
index 000000000..2ad58ff75
--- /dev/null
+++ b/src/app/core/mainmenu/mainmenu-routing.module.ts
@@ -0,0 +1,38 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { NgModule } from '@angular/core';
+import { RouterModule, Routes } from '@angular/router';
+
+import { CoreMainMenuPage } from './pages/menu/menu.page';
+import { CoreMainMenuMorePage } from './pages/more/more.page';
+
+const routes: Routes = [
+    {
+        path: '',
+        component: CoreMainMenuPage,
+        children: [
+            {
+                path: 'more',
+                component: CoreMainMenuMorePage,
+            },
+        ],
+    },
+];
+
+@NgModule({
+    imports: [RouterModule.forChild(routes)],
+    exports: [RouterModule],
+})
+export class CoreMainMenuRoutingModule {}
diff --git a/src/app/core/mainmenu/mainmenu.module.ts b/src/app/core/mainmenu/mainmenu.module.ts
new file mode 100644
index 000000000..1cd8f561e
--- /dev/null
+++ b/src/app/core/mainmenu/mainmenu.module.ts
@@ -0,0 +1,42 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+
+import { IonicModule } from '@ionic/angular';
+import { TranslateModule } from '@ngx-translate/core';
+
+import { CoreComponentsModule } from '@/app/components/components.module';
+import { CoreDirectivesModule } from '@/app/directives/directives.module';
+
+import { CoreMainMenuRoutingModule } from './mainmenu-routing.module';
+import { CoreMainMenuPage } from './pages/menu/menu.page';
+import { CoreMainMenuMorePage } from './pages/more/more.page';
+
+@NgModule({
+    imports: [
+        CommonModule,
+        IonicModule,
+        CoreMainMenuRoutingModule,
+        TranslateModule.forChild(),
+        CoreComponentsModule,
+        CoreDirectivesModule,
+    ],
+    declarations: [
+        CoreMainMenuPage,
+        CoreMainMenuMorePage,
+    ],
+})
+export class CoreMainMenuModule {}
diff --git a/src/app/core/mainmenu/pages/menu/menu.html b/src/app/core/mainmenu/pages/menu/menu.html
new file mode 100644
index 000000000..8c53535dc
--- /dev/null
+++ b/src/app/core/mainmenu/pages/menu/menu.html
@@ -0,0 +1,23 @@
+<ion-tabs #mainTabs [hidden]="!showTabs"> <!-- [loaded]="loaded" -->
+    <ion-tab-bar slot="bottom">
+        <ion-tab-button tab="redirect" [disabled]="true" [hidden]="true"></ion-tab-button> <!-- [show]="false" [root]="redirectPage" [rootParams]="redirectParams" -->
+
+        <ion-tab-button *ngFor="let tab of tabs" [tab]="tab.page" [disabled]="tab.hide" layout="label-hide"> <!-- [rootParams]="tab.pageParams" [tabBadge]="tab.badge" class="{{tab.class}}" [enabled]="!tab.hide" [show]="!tab.hide" -->
+            <core-icon [name]="tab.icon"></core-icon>
+            <ion-label>{{ tab.title | translate }}</ion-label>
+        </ion-tab-button>
+
+        <ion-tab-button tab="more" layout="label-hide">
+            <core-icon name="fa-bars"></core-icon>
+            <ion-label>{{ 'core.more' | translate }}</ion-label>
+        </ion-tab-button>
+    </ion-tab-bar>
+</ion-tabs>
+<div class="core-network-message" [hidden]="!showTabs">
+    <div class="core-online-message">
+        {{ "core.youreonline" | translate }}
+    </div>
+    <div class="core-offline-message">
+        {{ "core.youreoffline" | translate }}
+    </div>
+</div>
diff --git a/src/app/core/mainmenu/pages/menu/menu.page.ts b/src/app/core/mainmenu/pages/menu/menu.page.ts
new file mode 100644
index 000000000..364853780
--- /dev/null
+++ b/src/app/core/mainmenu/pages/menu/menu.page.ts
@@ -0,0 +1,225 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Component, OnInit, OnDestroy, ViewChild, ChangeDetectorRef } from '@angular/core';
+import { ActivatedRoute, Params } from '@angular/router';
+import { NavController } from '@ionic/angular';
+import { Subscription } from 'rxjs';
+
+import { CoreApp } from '@services/app';
+import { CoreSites } from '@services/sites';
+import { CoreEvents, CoreEventObserver, CoreEventLoadPageMainMenuData } from '@singletons/events';
+import { CoreMainMenu } from '../../services/mainmenu';
+import { CoreMainMenuDelegate, CoreMainMenuHandlerToDisplay } from '../../services/delegate';
+
+/**
+ * Page that displays the main menu of the app.
+ */
+@Component({
+    selector: 'page-core-mainmenu',
+    templateUrl: 'menu.html',
+    styleUrls: ['menu.scss'],
+})
+export class CoreMainMenuPage implements OnInit, OnDestroy {
+
+    tabs: CoreMainMenuHandlerToDisplay[] = [];
+    allHandlers?: CoreMainMenuHandlerToDisplay[];
+    loaded = false;
+    redirectPage?: string;
+    redirectParams?: Params;
+    showTabs = false;
+    tabsPlacement = 'bottom';
+
+    protected subscription?: Subscription;
+    protected redirectObs?: CoreEventObserver;
+    protected pendingRedirect?: CoreEventLoadPageMainMenuData;
+    protected urlToOpen?: string;
+    protected mainMenuId: number;
+    protected keyboardObserver?: CoreEventObserver;
+
+    @ViewChild('mainTabs') mainTabs?: any; // CoreIonTabsComponent;
+
+    constructor(
+        protected route: ActivatedRoute,
+        protected navCtrl: NavController,
+        protected menuDelegate: CoreMainMenuDelegate,
+        protected changeDetector: ChangeDetectorRef,
+    ) {
+        this.mainMenuId = CoreApp.instance.getMainMenuId();
+    }
+
+    /**
+     * Initialize the component.
+     */
+    ngOnInit(): void {
+        if (!CoreSites.instance.isLoggedIn()) {
+            this.navCtrl.navigateRoot('/login/init');
+
+            return;
+        }
+
+        this.route.queryParams.subscribe(params => {
+            const redirectPage = params['redirectPage'];
+            if (redirectPage) {
+                this.pendingRedirect = {
+                    redirectPage: redirectPage,
+                    redirectParams: params['redirectParams'],
+                };
+            }
+
+            this.urlToOpen = params['urlToOpen'];
+        });
+
+        this.showTabs = true;
+
+        this.redirectObs = CoreEvents.on(CoreEvents.LOAD_PAGE_MAIN_MENU, (data: CoreEventLoadPageMainMenuData) => {
+            if (!this.loaded) {
+                // View isn't ready yet, wait for it to be ready.
+                this.pendingRedirect = data;
+            } else {
+                delete this.pendingRedirect;
+                this.handleRedirect(data);
+            }
+        });
+
+        this.subscription = this.menuDelegate.getHandlers().subscribe((handlers) => {
+            // Remove the handlers that should only appear in the More menu.
+            this.allHandlers = handlers.filter((handler) => !handler.onlyInMore);
+
+            this.initHandlers();
+
+            if (this.loaded && this.pendingRedirect) {
+                // Wait for tabs to be initialized and then handle the redirect.
+                setTimeout(() => {
+                    if (this.pendingRedirect) {
+                        this.handleRedirect(this.pendingRedirect);
+                        delete this.pendingRedirect;
+                    }
+                });
+            }
+        });
+
+        window.addEventListener('resize', this.initHandlers.bind(this));
+
+        if (CoreApp.instance.isIOS()) {
+            // In iOS, the resize event is triggered before the keyboard is opened/closed and not triggered again once done.
+            // Init handlers again once keyboard is closed since the resize event doesn't have the updated height.
+            this.keyboardObserver = CoreEvents.on(CoreEvents.KEYBOARD_CHANGE, (kbHeight: number) => {
+                if (kbHeight === 0) {
+                    this.initHandlers();
+
+                    // If the device is slow it can take a bit more to update the window height. Retry in a few ms.
+                    setTimeout(() => {
+                        this.initHandlers();
+                    }, 250);
+                }
+            });
+        }
+
+        CoreApp.instance.setMainMenuOpen(this.mainMenuId, true);
+    }
+
+    /**
+     * Init handlers on change (size or handlers).
+     */
+    initHandlers(): void {
+        if (this.allHandlers) {
+            this.tabsPlacement = CoreMainMenu.instance.getTabPlacement();
+
+            const handlers = this.allHandlers.slice(0, CoreMainMenu.instance.getNumItems()); // Get main handlers.
+
+            // Re-build the list of tabs. If a handler is already in the list, use existing object to prevent re-creating the tab.
+            const newTabs: CoreMainMenuHandlerToDisplay[] = [];
+
+            for (let i = 0; i < handlers.length; i++) {
+                const handler = handlers[i];
+
+                // Check if the handler is already in the tabs list. If so, use it.
+                const tab = this.tabs.find((tab) => tab.title == handler.title && tab.icon == handler.icon);
+
+                tab ? tab.hide = false : null;
+                handler.hide = false;
+
+                newTabs.push(tab || handler);
+            }
+
+            // Maintain tab in phantom mode in case is not visible.
+            const selectedTab = this.mainTabs?.getSelected();
+            if (selectedTab) {
+                const oldTab = this.tabs.find((tab) => tab.page == selectedTab.root && tab.icon == selectedTab.tabIcon);
+
+                if (oldTab) {
+                    // Check if the selected handler is visible.
+                    const isVisible = newTabs.some((newTab) => oldTab.title == newTab.title && oldTab.icon == newTab.icon);
+
+                    if (!isVisible) {
+                        oldTab.hide = true;
+                        newTabs.push(oldTab);
+                    }
+                }
+            }
+
+            this.tabs = newTabs;
+
+            // Sort them by priority so new handlers are in the right position.
+            this.tabs.sort((a, b) => (b.priority || 0) - (a.priority || 0));
+
+            this.loaded = this.menuDelegate.areHandlersLoaded();
+        }
+
+        if (this.urlToOpen) {
+            // There's a content link to open.
+            // @todo: Treat URL.
+        }
+    }
+
+    /**
+     * Handle a redirect.
+     *
+     * @param data Data received.
+     */
+    protected handleRedirect(data: CoreEventLoadPageMainMenuData): void {
+        // Check if the redirect page is the root page of any of the tabs.
+        const i = this.tabs.findIndex((tab) => tab.page == data.redirectPage);
+
+        if (i >= 0) {
+            // Tab found. Set the params.
+            this.tabs[i].pageParams = Object.assign({}, data.redirectParams);
+        } else {
+            // Tab not found, use a phantom tab.
+            this.redirectPage = data.redirectPage;
+            this.redirectParams = data.redirectParams;
+        }
+
+        // Force change detection, otherwise sometimes the tab was selected before the params were applied.
+        this.changeDetector.detectChanges();
+
+        setTimeout(() => {
+            // Let the tab load the params before navigating.
+            this.mainTabs?.selectTabRootByIndex(i + 1);
+        });
+    }
+
+    /**
+     * Page destroyed.
+     */
+    ngOnDestroy(): void {
+        this.subscription?.unsubscribe();
+        this.redirectObs?.off();
+        window.removeEventListener('resize', this.initHandlers.bind(this));
+        CoreApp.instance.setMainMenuOpen(this.mainMenuId, false);
+        this.keyboardObserver?.off();
+    }
+
+}
diff --git a/src/app/core/mainmenu/pages/menu/menu.scss b/src/app/core/mainmenu/pages/menu/menu.scss
new file mode 100644
index 000000000..608068077
--- /dev/null
+++ b/src/app/core/mainmenu/pages/menu/menu.scss
@@ -0,0 +1,93 @@
+ion-icon.tab-button-icon {
+    text-overflow: unset;
+    overflow: visible;
+    text-align: center;
+    transition: margin 500ms ease-in-out, transform 300ms ease-in-out;
+}
+
+.ion-md-fa-graduation-cap,
+.ion-ios-fa-graduation-cap,
+.ion-ios-fa-graduation-cap-outline,
+.ion-fa-graduation-cap {
+    // @todo @extend .fa-graduation-cap;
+    // @todo @extend .fa;
+    font-size: 21px;
+    height: 21px;
+
+}
+
+.ion-ios-fa-graduation-cap-outline {
+    color: transparent;
+    -webkit-text-stroke-width: 0.8px;
+    // @todo -webkit-text-stroke-color: $tabs-tab-color-inactive;
+    font-size: 23px;
+    height: 23px;
+}
+
+.ion-md-fa-newspaper-o,
+.ion-ios-fa-newspaper-o,
+.ion-ios-fa-newspaper-o-outline,
+.ion-fa-newspaper-o {
+    // @todo @extend .fa-newspaper-o;
+    // @todo @extend .fa;
+    font-size: 22px;
+    height: 22px;
+}
+
+.ion-ios-fa-newspaper-o-outline {
+    font-size: 23px;
+    height: 23px;
+}
+
+.core-network-message {
+    position: absolute;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    padding-left: 10px;
+    padding-right: 10px;
+    text-align: center;
+    color: white;
+    visibility: hidden;
+    height: 0;
+    transition: all 500ms ease-in-out;
+    opacity: .8;
+}
+
+.core-online-message,
+.core-offline-message {
+    display: none;
+}
+
+
+/**
+.core-online ion-app.app-root page-core-mainmenu,
+.core-offline ion-app.app-root page-core-mainmenu {
+
+    core-ion-tabs[tabsplacement="bottom"] ion-icon.tab-button-icon {
+        margin-bottom: $core-network-message-height / 2;
+
+        &.icon-ios {
+            margin-bottom: 14px;
+        }
+    }
+
+    .core-network-message {
+        visibility: visible;
+        height: $core-network-message-height;
+        pointer-events: none;
+    }
+}
+
+.core-offline ion-app.app-root page-core-mainmenu .core-offline-message,
+.core-online ion-app.app-root page-core-mainmenu .core-online-message {
+    display: block;
+}
+
+.core-online ion-app.app-root page-core-mainmenu .core-network-message {
+    background: $green;
+}
+
+.core-offline ion-app.app-root page-core-mainmenu .core-network-message {
+    background: $red;
+}*/
diff --git a/src/app/core/mainmenu/pages/more/more.html b/src/app/core/mainmenu/pages/more/more.html
new file mode 100644
index 000000000..c349498a4
--- /dev/null
+++ b/src/app/core/mainmenu/pages/more/more.html
@@ -0,0 +1,84 @@
+<ion-header>
+    <ion-toolbar>
+        <ion-buttons slot="start">
+            <ion-back-button [attr.aria-label]="'core.back' | translate"></ion-back-button>
+        </ion-buttons>
+
+        <ion-title><core-format-text [text]="siteName" contextLevel="system" [contextInstanceId]="0"></core-format-text></ion-title>
+    </ion-toolbar>
+</ion-header>
+<ion-content>
+    <ion-list>
+        <ion-item *ngIf="siteInfo" class="ion-text-wrap"> <!-- @todo core-user-link [userId]="siteInfo.userid" -->
+            <ion-avatar slot="start"></ion-avatar> <!-- @todo core-user-avatar [user]="siteInfo" -->
+            <ion-label>
+                <h2>{{siteInfo.fullname}}</h2>
+                <p><core-format-text [text]="siteName" contextLevel="system" [contextInstanceId]="0" [wsNotFiltered]="true"></core-format-text></p>
+                <p>{{ siteUrl }}</p>
+            </ion-label>
+        </ion-item>
+        <ion-item-divider></ion-item-divider>
+        <ion-item class="ion-text-center" *ngIf="(!handlers || !handlers.length) && !handlersLoaded">
+            <ion-spinner></ion-spinner>
+        </ion-item>
+        <ion-item *ngFor="let handler of handlers" [ngClass]="['core-moremenu-handler', handler.class || '']" (click)="openHandler(handler)" title="{{ handler.title | translate }}" detail="true">
+            <core-icon [name]="handler.icon" slot="start"></core-icon>
+            <ion-label>
+                <h2>{{ handler.title | translate}}</h2>
+            </ion-label>
+            <ion-badge slot="end" *ngIf="handler.showBadge" [hidden]="handler.loading || !handler.badge">{{handler.badge}}</ion-badge>
+            <ion-spinner slot="end" *ngIf="handler.showBadge && handler.loading"></ion-spinner>
+        </ion-item>
+        <div *ngFor="let item of customItems" class="core-moremenu-customitem">
+            <ion-item *ngIf="item.type != 'embedded'" [href]="item.url" title="{{item.label}}"> <!-- @todo core-link [capture]="item.type == 'app'" [inApp]="item.type == 'inappbrowser'" -->
+                <core-icon [name]="item.icon" slot="start"></core-icon>
+                <ion-label>
+                    <h2>{{item.label}}</h2>
+                </ion-label>
+            </ion-item>
+            <ion-item *ngIf="item.type == 'embedded'" (click)="openItem(item)" title="{{item.label}}">
+                <core-icon [name]="item.icon" slot="start"></core-icon>
+                <ion-label>
+                    <h2>{{item.label}}</h2>
+                </ion-label>
+            </ion-item>
+        </div>
+        <ion-item *ngIf="showScanQR" (click)="scanQR()">
+            <core-icon name="fa-qrcode" slot="start" aria-hidden="true"></core-icon>
+            <ion-label>
+                <h2>{{ 'core.scanqr' | translate }}</h2>
+            </ion-label>
+        </ion-item>
+        <ion-item *ngIf="showWeb" [href]="siteInfo.siteurl" core-link autoLogin="yes" title="{{ 'core.mainmenu.website' | translate }}">
+            <ion-icon name="globe" slot="start" aria-hidden="true"></ion-icon>
+            <ion-label>
+                <h2>{{ 'core.mainmenu.website' | translate }}</h2>
+            </ion-label>
+        </ion-item>
+        <ion-item *ngIf="showHelp" [href]="docsUrl" core-link autoLogin="no" title="{{ 'core.mainmenu.help' | translate }}">
+            <ion-icon name="help-buoy" slot="start" aria-hidden="true"></ion-icon>
+            <ion-label>
+                <h2>{{ 'core.mainmenu.help' | translate }}</h2>
+            </ion-label>
+        </ion-item>
+        <ion-item (click)="openSitePreferences()" title="{{ 'core.settings.preferences' | translate }}">
+            <core-icon name="fa-wrench" slot="start"></core-icon>
+            <ion-label>
+                <h2>{{ 'core.settings.preferences' | translate }}</h2>
+            </ion-label>
+        </ion-item>
+        <ion-item (click)="logout()" title="{{ logoutLabel | translate }}">
+            <ion-icon name="log-out" slot="start" aria-hidden="true"></ion-icon>
+            <ion-label>
+                <h2>{{ logoutLabel | translate }}</h2>
+            </ion-label>
+        </ion-item>
+        <ion-item-divider></ion-item-divider>
+        <ion-item (click)="openAppSettings()" title="{{ 'core.settings.appsettings' | translate }}">
+            <core-icon name="fa-cogs" slot="start"></core-icon>
+            <ion-label>
+                <h2>{{ 'core.settings.appsettings' | translate }}</h2>
+            </ion-label>
+        </ion-item>
+    </ion-list>
+</ion-content>
diff --git a/src/app/core/mainmenu/pages/more/more.page.ts b/src/app/core/mainmenu/pages/more/more.page.ts
new file mode 100644
index 000000000..bd47f45d8
--- /dev/null
+++ b/src/app/core/mainmenu/pages/more/more.page.ts
@@ -0,0 +1,182 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Component, OnInit, OnDestroy } from '@angular/core';
+import { Subscription } from 'rxjs';
+
+import { CoreSites } from '@services/sites';
+import { CoreUtils } from '@services/utils/utils';
+import { CoreSiteInfo } from '@classes/site';
+import { CoreLoginHelper } from '@core/login/services/helper';
+import { CoreMainMenuDelegate, CoreMainMenuHandlerData } from '../../services/delegate';
+import { CoreMainMenu, CoreMainMenuCustomItem } from '../../services/mainmenu';
+import { CoreEventObserver, CoreEvents } from '@singletons/events';
+
+/**
+ * Page that displays the main menu of the app.
+ */
+@Component({
+    selector: 'page-core-mainmenu-more',
+    templateUrl: 'more.html',
+    styleUrls: ['more.scss'],
+})
+export class CoreMainMenuMorePage implements OnInit, OnDestroy {
+
+    handlers?: CoreMainMenuHandlerData[];
+    allHandlers?: CoreMainMenuHandlerData[];
+    handlersLoaded = false;
+    siteInfo?: CoreSiteInfo;
+    siteName?: string;
+    logoutLabel?: string;
+    showScanQR: boolean;
+    showWeb?: boolean;
+    showHelp?: boolean;
+    docsUrl?: string;
+    customItems?: CoreMainMenuCustomItem[];
+    siteUrl?: string;
+
+    protected subscription!: Subscription;
+    protected langObserver: CoreEventObserver;
+    protected updateSiteObserver: CoreEventObserver;
+
+    constructor(
+        protected menuDelegate: CoreMainMenuDelegate,
+    ) {
+
+        this.langObserver = CoreEvents.on(CoreEvents.LANGUAGE_CHANGED, this.loadSiteInfo.bind(this));
+        this.updateSiteObserver = CoreEvents.on(
+            CoreEvents.SITE_UPDATED,
+            this.loadSiteInfo.bind(this),
+            CoreSites.instance.getCurrentSiteId(),
+        );
+        this.loadSiteInfo();
+        this.showScanQR = CoreUtils.instance.canScanQR() &&
+                !CoreSites.instance.getCurrentSite()?.isFeatureDisabled('CoreMainMenuDelegate_QrReader');
+    }
+
+    /**
+     * Initialize component.
+     */
+    ngOnInit(): void {
+        // Load the handlers.
+        this.subscription = this.menuDelegate.getHandlers().subscribe((handlers) => {
+            this.allHandlers = handlers;
+
+            this.initHandlers();
+        });
+
+        window.addEventListener('resize', this.initHandlers.bind(this));
+    }
+
+    /**
+     * Page destroyed.
+     */
+    ngOnDestroy(): void {
+        window.removeEventListener('resize', this.initHandlers.bind(this));
+        this.langObserver?.off();
+        this.updateSiteObserver?.off();
+        this.subscription?.unsubscribe();
+    }
+
+    /**
+     * Init handlers on change (size or handlers).
+     */
+    initHandlers(): void {
+        if (!this.allHandlers) {
+            return;
+        }
+
+        // Calculate the main handlers not to display them in this view.
+        const mainHandlers = this.allHandlers
+            .filter((handler) => !handler.onlyInMore)
+            .slice(0, CoreMainMenu.instance.getNumItems());
+
+        // Get only the handlers that don't appear in the main view.
+        this.handlers = this.allHandlers.filter((handler) => mainHandlers.indexOf(handler) == -1);
+
+        this.handlersLoaded = this.menuDelegate.areHandlersLoaded();
+    }
+
+    /**
+     * Load the site info required by the view.
+     */
+    protected async loadSiteInfo(): Promise<void> {
+        const currentSite = CoreSites.instance.getCurrentSite();
+
+        if (!currentSite) {
+            return;
+        }
+
+        this.siteInfo = currentSite.getInfo();
+        this.siteName = currentSite.getSiteName();
+        this.siteUrl = currentSite.getURL();
+        this.logoutLabel = CoreLoginHelper.instance.getLogoutLabel(currentSite);
+        this.showWeb = !currentSite.isFeatureDisabled('CoreMainMenuDelegate_website');
+        this.showHelp = !currentSite.isFeatureDisabled('CoreMainMenuDelegate_help');
+
+        this.docsUrl = await currentSite.getDocsUrl();
+
+        this.customItems = await CoreMainMenu.instance.getCustomMenuItems();
+    }
+
+    /**
+     * Open a handler.
+     *
+     * @param handler Handler to open.
+     */
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    openHandler(handler: CoreMainMenuHandlerData): void {
+        // @todo
+    }
+
+    /**
+     * Open an embedded custom item.
+     *
+     * @param item Item to open.
+     */
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    openItem(item: CoreMainMenuCustomItem): void {
+        // @todo
+    }
+
+    /**
+     * Open app settings page.
+     */
+    openAppSettings(): void {
+        // @todo
+    }
+
+    /**
+     * Open site settings page.
+     */
+    openSitePreferences(): void {
+        // @todo
+    }
+
+    /**
+     * Scan and treat a QR code.
+     */
+    async scanQR(): Promise<void> {
+        // Scan for a QR code.
+        // @todo
+    }
+
+    /**
+     * Logout the user.
+     */
+    logout(): void {
+        CoreSites.instance.logout();
+    }
+
+}
diff --git a/src/app/core/mainmenu/pages/more/more.scss b/src/app/core/mainmenu/pages/more/more.scss
new file mode 100644
index 000000000..301c56874
--- /dev/null
+++ b/src/app/core/mainmenu/pages/more/more.scss
@@ -0,0 +1,97 @@
+/*
+$core-more-icon: $gray-darker !default;
+$core-more-background-ios: $list-ios-background-color !default;
+$core-more-background-md: $list-md-background-color !default;
+$core-more-activated-background-ios: color-shade($core-more-background-ios) !default;
+$core-more-activated-background-md: color-shade($core-more-background-md) !default;
+$core-more-divider-ios: $item-ios-divider-background !default;
+$core-more-divider-md: $item-md-divider-background !default;
+$core-more-border-ios: $list-ios-border-color !default;
+$core-more-border-md: $list-md-border-color !default;
+$core-more-color-ios: $list-ios-text-color!default;
+$core-more-color-md: $list-md-text-color !default;
+
+.item-block {
+    &.item-ios {
+        background-color: $core-more-background-ios;
+        color: $core-more-color-ios;
+        p {
+            color: $core-more-color-ios;
+        }
+
+        .item-inner {
+            border-bottom: $hairlines-width solid $core-more-border-ios;
+        }
+    }
+    &.item-md {
+        background-color: $core-more-background-md;
+        color: $core-more-color-md;
+        p {
+            color: $core-more-color-md;
+        }
+
+        .item-inner {
+            border-bottom: 1px solid $core-more-border-md;
+        }
+    }
+
+    &.activated {
+        &.item-ios {
+            background-color: $core-more-activated-background-ios;
+        }
+        &.item-md {
+            background-color: $core-more-activated-background-md;
+        }
+    }
+}
+
+ion-icon {
+    color: $core-more-icon;
+}
+
+.item-divider {
+    &.item-ios {
+        background-color: $core-more-divider-ios;
+    }
+
+    &.item-md {
+        background-color: $core-more-divider-md;
+        border-bottom: $core-more-border-md;
+    }
+}
+
+@include darkmode() {
+    ion-icon {
+        color: $core-dark-text-color;
+    }
+
+    .item-divider {
+        &.item-ios,
+        &.item-md {
+            color: $core-dark-text-color;
+            background-color: $core-dark-item-divider-bg-color;
+        }
+    }
+
+    .item-block {
+        &.item-ios,
+        &.item-md {
+            color: $core-dark-text-color;
+            background-color: $core-dark-item-bg-color;
+            p {
+                color: $core-dark-text-color;
+            }
+
+        }
+
+        &.activated {
+            &.item-ios {
+                background-color: $core-more-activated-background-ios;
+            }
+            &.item-md {
+                background-color: $core-more-activated-background-md;
+            }
+        }
+    }
+}
+*/
\ No newline at end of file
diff --git a/src/app/core/mainmenu/services/delegate.ts b/src/app/core/mainmenu/services/delegate.ts
new file mode 100644
index 000000000..41de92992
--- /dev/null
+++ b/src/app/core/mainmenu/services/delegate.ts
@@ -0,0 +1,175 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { Params } from '@angular/router';
+import { Subject, BehaviorSubject } from 'rxjs';
+
+import { CoreDelegate, CoreDelegateHandler } from '@classes/delegate';
+import { CoreEvents } from '@singletons/events';
+
+/**
+ * Interface that all main menu handlers must implement.
+ */
+export interface CoreMainMenuHandler extends CoreDelegateHandler {
+    /**
+     * The highest priority is displayed first.
+     */
+    priority?: number;
+
+    /**
+     * Returns the data needed to render the handler.
+     *
+     * @return Data.
+     */
+    getDisplayData(): CoreMainMenuHandlerData;
+}
+
+/**
+ * Data needed to render a main menu handler. It's returned by the handler.
+ */
+export interface CoreMainMenuHandlerData {
+    /**
+     * Name of the page to load for the handler.
+     */
+    page: string;
+
+    /**
+     * Title to display for the handler.
+     */
+    title: string;
+
+    /**
+     * Name of the icon to display for the handler.
+     */
+    icon: string; // Name of the icon to display in the tab.
+
+    /**
+     * Class to add to the displayed handler.
+     */
+    class?: string;
+
+    /**
+     * If the handler has badge to show or not.
+     */
+    showBadge?: boolean;
+
+    /**
+     * Text to display on the badge. Only used if showBadge is true.
+     */
+    badge?: string;
+
+    /**
+     * If true, the badge number is being loaded. Only used if showBadge is true.
+     */
+    loading?: boolean;
+
+    /**
+     * Params to pass to the page.
+     */
+    pageParams?: Params;
+
+    /**
+     * Whether the handler should only appear in More menu.
+     */
+    onlyInMore?: boolean;
+}
+
+/**
+ * Data returned by the delegate for each handler.
+ */
+export interface CoreMainMenuHandlerToDisplay extends CoreMainMenuHandlerData {
+    /**
+     * Name of the handler.
+     */
+    name?: string;
+
+    /**
+     * Priority of the handler.
+     */
+    priority?: number;
+
+    /**
+     * Hide tab. Used then resizing.
+     */
+    hide?: boolean;
+}
+
+/**
+ * Service to interact with plugins to be shown in the main menu. Provides functions to register a plugin
+ * and notify an update in the data.
+ */
+@Injectable({
+    providedIn: 'root',
+})
+export class CoreMainMenuDelegate extends CoreDelegate {
+
+    protected loaded = false;
+    protected siteHandlers: Subject<CoreMainMenuHandlerToDisplay[]> = new BehaviorSubject<CoreMainMenuHandlerToDisplay[]>([]);
+    protected featurePrefix = 'CoreMainMenuDelegate_';
+
+    constructor() {
+        super('CoreMainMenuDelegate', true);
+
+        CoreEvents.on(CoreEvents.LOGOUT, this.clearSiteHandlers.bind(this));
+    }
+
+    /**
+     * Check if handlers are loaded.
+     *
+     * @return True if handlers are loaded, false otherwise.
+     */
+    areHandlersLoaded(): boolean {
+        return this.loaded;
+    }
+
+    /**
+     * Clear current site handlers. Reserved for core use.
+     */
+    protected clearSiteHandlers(): void {
+        this.loaded = false;
+        this.siteHandlers.next([]);
+    }
+
+    /**
+     * Get the handlers for the current site.
+     *
+     * @return An observable that will receive the handlers.
+     */
+    getHandlers(): Subject<CoreMainMenuHandlerToDisplay[]> {
+        return this.siteHandlers;
+    }
+
+    /**
+     * Update handlers Data.
+     */
+    updateData(): void {
+        const displayData: CoreMainMenuHandlerToDisplay[] = [];
+
+        for (const name in this.enabledHandlers) {
+            const handler = <CoreMainMenuHandler> this.enabledHandlers[name];
+            const data = <CoreMainMenuHandlerToDisplay> handler.getDisplayData();
+
+            data.name = name;
+            data.priority = handler.priority;
+        }
+
+        // Sort them by priority.
+        displayData.sort((a, b) => (b.priority || 0) - (a.priority || 0));
+
+        this.loaded = true;
+        this.siteHandlers.next(displayData);
+    }
+
+}
diff --git a/src/app/core/mainmenu/services/mainmenu.ts b/src/app/core/mainmenu/services/mainmenu.ts
new file mode 100644
index 000000000..2385272d1
--- /dev/null
+++ b/src/app/core/mainmenu/services/mainmenu.ts
@@ -0,0 +1,275 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+
+import { CoreApp } from '@services/app';
+import { CoreLang } from '@services/lang';
+import { CoreSites } from '@services/sites';
+import { CoreUtils } from '@services/utils/utils';
+import { CoreConstants } from '@core/constants';
+import { CoreMainMenuDelegate, CoreMainMenuHandlerToDisplay } from './delegate';
+import { makeSingleton } from '@singletons/core.singletons';
+
+/**
+ * Service that provides some features regarding Main Menu.
+ */
+@Injectable({
+    providedIn: 'root',
+})
+export class CoreMainMenuProvider {
+
+    static readonly NUM_MAIN_HANDLERS = 4;
+    static readonly ITEM_MIN_WIDTH = 72; // Min with of every item, based on 5 items on a 360 pixel wide screen.
+
+    protected tablet = false;
+
+    constructor(protected menuDelegate: CoreMainMenuDelegate) {
+        this.tablet = !!(window?.innerWidth && window.innerWidth >= 576 && window.innerHeight >= 576);
+    }
+
+    /**
+     * Get the current main menu handlers.
+     *
+     * @return Promise resolved with the current main menu handlers.
+     */
+    getCurrentMainMenuHandlers(): Promise<CoreMainMenuHandlerToDisplay[]> {
+        const deferred = CoreUtils.instance.promiseDefer<CoreMainMenuHandlerToDisplay[]>();
+
+        const subscription = this.menuDelegate.getHandlers().subscribe((handlers) => {
+            subscription?.unsubscribe();
+
+            // Remove the handlers that should only appear in the More menu.
+            handlers = handlers.filter(handler => !handler.onlyInMore);
+
+            // Return main handlers.
+            deferred.resolve(handlers.slice(0, this.getNumItems()));
+        });
+
+        return deferred.promise;
+    }
+
+    /**
+     * Get a list of custom menu items for a certain site.
+     *
+     * @param siteId Site ID. If not defined, current site.
+     * @return List of custom menu items.
+     */
+    async getCustomMenuItems(siteId?: string): Promise<CoreMainMenuCustomItem[]> {
+        const site = await CoreSites.instance.getSite(siteId);
+
+        const itemsString = site.getStoredConfig('tool_mobile_custommenuitems');
+        const map: CustomMenuItemsMap = {};
+        const result: CoreMainMenuCustomItem[] = [];
+
+        let position = 0; // Position of each item, to keep the same order as it's configured.
+
+        if (!itemsString || typeof itemsString != 'string') {
+            // Setting not valid.
+            return result;
+        }
+
+        // Add items to the map.
+        const items = itemsString.split(/(?:\r\n|\r|\n)/);
+        items.forEach((item) => {
+            const values = item.split('|');
+            const label = values[0] ? values[0].trim() : values[0];
+            const url = values[1] ? values[1].trim() : values[1];
+            const type = values[2] ? values[2].trim() : values[2];
+            const lang = (values[3] ? values[3].trim() : values[3]) || 'none';
+            let icon = values[4] ? values[4].trim() : values[4];
+
+            if (!label || !url || !type) {
+                // Invalid item, ignore it.
+                return;
+            }
+
+            const id = url + '#' + type;
+            if (!icon) {
+                // Icon not defined, use default one.
+                icon = type == 'embedded' ? 'fa-square-o' : 'fa-link'; // @todo: Find a better icon for embedded.
+            }
+
+            if (!map[id]) {
+                // New entry, add it to the map.
+                map[id] = {
+                    url: url,
+                    type: type,
+                    position: position,
+                    labels: {},
+                };
+                position++;
+            }
+
+            map[id].labels[lang.toLowerCase()] = {
+                label: label,
+                icon: icon,
+            };
+        });
+
+        if (!position) {
+            // No valid items found, stop.
+            return result;
+        }
+
+        const currentLang = await CoreLang.instance.getCurrentLanguage();
+
+        const fallbackLang = CoreConstants.CONFIG.default_lang || 'en';
+
+        // Get the right label for each entry and add it to the result.
+        for (const id in map) {
+            const entry = map[id];
+            let data = entry.labels[currentLang] || entry.labels[currentLang + '_only'] ||
+                    entry.labels.none || entry.labels[fallbackLang];
+
+            if (!data) {
+                // No valid label found, get the first one that is not "_only".
+                for (const lang in entry.labels) {
+                    if (lang.indexOf('_only') == -1) {
+                        data = entry.labels[lang];
+                        break;
+                    }
+                }
+
+                if (!data) {
+                    // No valid label, ignore this entry.
+                    continue;
+                }
+            }
+
+            result[entry.position] = {
+                url: entry.url,
+                type: entry.type,
+                label: data.label,
+                icon: data.icon,
+            };
+        }
+
+        // Remove undefined values.
+        return result.filter((entry) => typeof entry != 'undefined');
+    }
+
+    /**
+     * Get the number of items to be shown on the main menu bar.
+     *
+     * @return Number of items depending on the device width.
+     */
+    getNumItems(): number {
+        if (!this.isResponsiveMainMenuItemsDisabledInCurrentSite() && window && window.innerWidth) {
+            let numElements: number;
+
+            if (this.tablet) {
+                // Tablet, menu will be displayed vertically.
+                numElements = Math.floor(window.innerHeight / CoreMainMenuProvider.ITEM_MIN_WIDTH);
+            } else {
+                numElements = Math.floor(window.innerWidth / CoreMainMenuProvider.ITEM_MIN_WIDTH);
+
+                // Set a maximum elements to show and skip more button.
+                numElements = numElements >= 5 ? 5 : numElements;
+            }
+
+            // Set a mínimum elements to show and skip more button.
+            return numElements > 1 ? numElements - 1 : 1;
+        }
+
+        return CoreMainMenuProvider.NUM_MAIN_HANDLERS;
+    }
+
+    /**
+     * Get tabs placement depending on the device size.
+     *
+     * @return Tabs placement including side value.
+     */
+    getTabPlacement(): string {
+        const tablet = !!(window.innerWidth && window.innerWidth >= 576 && (window.innerHeight >= 576 ||
+                ((CoreApp.instance.isKeyboardVisible() || CoreApp.instance.isKeyboardOpening()) && window.innerHeight >= 200)));
+
+        if (tablet != this.tablet) {
+            this.tablet = tablet;
+
+            // @todo Resize so content margins can be updated.
+        }
+
+        return tablet ? 'side' : 'bottom';
+    }
+
+    /**
+     * Check if a certain page is the root of a main menu handler currently displayed.
+     *
+     * @param page Name of the page.
+     * @param pageParams Page params.
+     * @return Promise resolved with boolean: whether it's the root of a main menu handler.
+     */
+    async isCurrentMainMenuHandler(pageName: string): Promise<boolean> {
+        const handlers = await this.getCurrentMainMenuHandlers();
+
+        const handler = handlers.find((handler) => handler.page == pageName);
+
+        return !!handler;
+    }
+
+    /**
+     * Check if responsive main menu items is disabled in the current site.
+     *
+     * @return Whether it's disabled.
+     */
+    protected isResponsiveMainMenuItemsDisabledInCurrentSite(): boolean {
+        const site = CoreSites.instance.getCurrentSite();
+
+        return !!site?.isFeatureDisabled('NoDelegate_ResponsiveMainMenuItems');
+    }
+
+}
+
+export class CoreMainMenu extends makeSingleton(CoreMainMenuProvider) {}
+
+/**
+ * Custom main menu item.
+ */
+export interface CoreMainMenuCustomItem {
+    /**
+     * Type of the item: app, inappbrowser, browser or embedded.
+     */
+    type: string;
+
+    /**
+     * Url of the item.
+     */
+    url: string;
+
+    /**
+     * Label to display for the item.
+     */
+    label: string;
+
+    /**
+     * Name of the icon to display for the item.
+     */
+    icon: string;
+}
+
+/**
+ * Map of custom menu items.
+ */
+type CustomMenuItemsMap = Record<string, {
+    url: string;
+    type: string;
+    position: number;
+    labels: {
+        [lang: string]: {
+            label: string;
+            icon: string;
+        };
+    };
+}>;
diff --git a/src/app/services/sites.ts b/src/app/services/sites.ts
index ed32a9dbc..9292eacf4 100644
--- a/src/app/services/sites.ts
+++ b/src/app/services/sites.ts
@@ -1312,7 +1312,7 @@ export class CoreSitesProvider {
     async logout(): Promise<void> {
         await this.dbReady;
 
-        let siteId;
+        let siteId: string | undefined;
         const promises: Promise<unknown>[] = [];
 
         if (this.currentSite) {
diff --git a/src/app/singletons/events.ts b/src/app/singletons/events.ts
index 51152d929..4bc192fa3 100644
--- a/src/app/singletons/events.ts
+++ b/src/app/singletons/events.ts
@@ -208,3 +208,11 @@ export type CoreEventLoadingChangedData = {
     loaded: boolean;
     uniqueId: string;
 };
+
+/**
+ * Data passed to LOAD_PAGE_MAIN_MENU event.
+ */
+export type CoreEventLoadPageMainMenuData = {
+    redirectPage: string;
+    redirectParams?: Params;
+};
diff --git a/src/assets/lang/en.json b/src/assets/lang/en.json
index 2c01ee081..29e9ac335 100644
--- a/src/assets/lang/en.json
+++ b/src/assets/lang/en.json
@@ -304,6 +304,10 @@
     "core.browser": "Browser",
     "core.copiedtoclipboard": "Text copied to clipboard",
     "core.login.yourenteredsite": "Connect to your site",
+    "core.mainmenu.changesite": "Change site",
+    "core.mainmenu.help": "Help",
+    "core.mainmenu.logout": "Log out",
+    "core.mainmenu.website": "Website",
     "core.no": "No",
     "core.offline": "Offline",
     "core.ok": "OK",