diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1785,6 +1785,7 @@
     'PeopleBrowseUserDirectoryCapability' => 'applications/people/capability/PeopleBrowseUserDirectoryCapability.php',
     'PeopleCreateUsersCapability' => 'applications/people/capability/PeopleCreateUsersCapability.php',
     'PeopleHovercardEngineExtension' => 'applications/people/engineextension/PeopleHovercardEngineExtension.php',
+    'PeopleMainMenuBarExtension' => 'applications/people/engineextension/PeopleMainMenuBarExtension.php',
     'PeopleUserLogGarbageCollector' => 'applications/people/garbagecollector/PeopleUserLogGarbageCollector.php',
     'Phabricator404Controller' => 'applications/base/controller/Phabricator404Controller.php',
     'PhabricatorAWSConfigOptions' => 'applications/config/option/PhabricatorAWSConfigOptions.php',
@@ -2671,6 +2672,7 @@
     'PhabricatorFavoritesApplication' => 'applications/favorites/application/PhabricatorFavoritesApplication.php',
     'PhabricatorFavoritesController' => 'applications/favorites/controller/PhabricatorFavoritesController.php',
     'PhabricatorFavoritesMainController' => 'applications/favorites/controller/PhabricatorFavoritesMainController.php',
+    'PhabricatorFavoritesMainMenuBarExtension' => 'applications/favorites/engineextension/PhabricatorFavoritesMainMenuBarExtension.php',
     'PhabricatorFavoritesMenuItemController' => 'applications/favorites/controller/PhabricatorFavoritesMenuItemController.php',
     'PhabricatorFavoritesProfileMenuEngine' => 'applications/favorites/engine/PhabricatorFavoritesProfileMenuEngine.php',
     'PhabricatorFaxContentSource' => 'infrastructure/contentsource/PhabricatorFaxContentSource.php',
@@ -6662,6 +6664,7 @@
     'PeopleBrowseUserDirectoryCapability' => 'PhabricatorPolicyCapability',
     'PeopleCreateUsersCapability' => 'PhabricatorPolicyCapability',
     'PeopleHovercardEngineExtension' => 'PhabricatorHovercardEngineExtension',
+    'PeopleMainMenuBarExtension' => 'PhabricatorMainMenuBarExtension',
     'PeopleUserLogGarbageCollector' => 'PhabricatorGarbageCollector',
     'Phabricator404Controller' => 'PhabricatorController',
     'PhabricatorAWSConfigOptions' => 'PhabricatorApplicationConfigOptions',
@@ -7685,6 +7688,7 @@
     'PhabricatorFavoritesApplication' => 'PhabricatorApplication',
     'PhabricatorFavoritesController' => 'PhabricatorController',
     'PhabricatorFavoritesMainController' => 'PhabricatorFavoritesController',
+    'PhabricatorFavoritesMainMenuBarExtension' => 'PhabricatorMainMenuBarExtension',
     'PhabricatorFavoritesMenuItemController' => 'PhabricatorFavoritesController',
     'PhabricatorFavoritesProfileMenuEngine' => 'PhabricatorProfileMenuEngine',
     'PhabricatorFaxContentSource' => 'PhabricatorContentSource',
diff --git a/src/applications/auth/extension/PhabricatorAuthMainMenuBarExtension.php b/src/applications/auth/extension/PhabricatorAuthMainMenuBarExtension.php
--- a/src/applications/auth/extension/PhabricatorAuthMainMenuBarExtension.php
+++ b/src/applications/auth/extension/PhabricatorAuthMainMenuBarExtension.php
@@ -9,6 +9,10 @@
     return true;
   }
 
+  public function getExtensionOrder() {
+    return 900;
+  }
+
   public function buildMainMenus() {
     $viewer = $this->getViewer();
 
diff --git a/src/applications/base/PhabricatorApplication.php b/src/applications/base/PhabricatorApplication.php
--- a/src/applications/base/PhabricatorApplication.php
+++ b/src/applications/base/PhabricatorApplication.php
@@ -315,23 +315,6 @@
   }
 
 
-  /**
-   * Build extra items for the main menu. Generally, this is used to render
-   * static dropdowns.
-   *
-   * @param  PhabricatorUser    The viewing user.
-   * @param  AphrontController  The current controller. May be null for special
-   *                            pages like 404, exception handlers, etc.
-   * @return view               List of menu items.
-   * @task ui
-   */
-  public function buildMainMenuExtraNodes(
-    PhabricatorUser $viewer,
-    PhabricatorController $controller = null) {
-    return array();
-  }
-
-
 /* -(  Application Management  )--------------------------------------------- */
 
 
diff --git a/src/applications/favorites/application/PhabricatorFavoritesApplication.php b/src/applications/favorites/application/PhabricatorFavoritesApplication.php
--- a/src/applications/favorites/application/PhabricatorFavoritesApplication.php
+++ b/src/applications/favorites/application/PhabricatorFavoritesApplication.php
@@ -32,82 +32,4 @@
     return false;
   }
 
-  public function buildMainMenuExtraNodes(
-    PhabricatorUser $viewer,
-    PhabricatorController $controller = null) {
-
-    $dropdown = $this->renderFavoritesDropdown($viewer);
-    if (!$dropdown) {
-      return null;
-    }
-
-    return id(new PHUIButtonView())
-      ->setTag('a')
-      ->setHref('#')
-      ->setIcon('fa-star')
-      ->addClass('phabricator-core-user-menu')
-      ->setNoCSS(true)
-      ->setDropdown(true)
-      ->setDropdownMenu($dropdown);
-  }
-
-  private function renderFavoritesDropdown(PhabricatorUser $viewer) {
-    $application = __CLASS__;
-
-    $applications = id(new PhabricatorApplicationQuery())
-      ->setViewer($viewer)
-      ->withClasses(array($application))
-      ->withInstalled(true)
-      ->execute();
-    $favorites = head($applications);
-    if (!$favorites) {
-      return null;
-    }
-
-    $menu_engine = id(new PhabricatorFavoritesProfileMenuEngine())
-      ->setViewer($viewer)
-      ->setProfileObject($favorites);
-
-    if ($viewer->getPHID()) {
-      $menu_engine
-        ->setCustomPHID($viewer->getPHID())
-        ->setMenuType(PhabricatorProfileMenuEngine::MENU_COMBINED);
-    } else {
-      $menu_engine
-        ->setMenuType(PhabricatorProfileMenuEngine::MENU_GLOBAL);
-    }
-
-    $filter_view = $menu_engine->buildNavigation();
-
-    $menu_view = $filter_view->getMenu();
-    $item_views = $menu_view->getItems();
-
-    $view = id(new PhabricatorActionListView())
-      ->setViewer($viewer);
-    foreach ($item_views as $item) {
-      $type = null;
-      if (!strlen($item->getName())) {
-        $type = PhabricatorActionView::TYPE_DIVIDER;
-      }
-      $action = id(new PhabricatorActionView())
-        ->setName($item->getName())
-        ->setHref($item->getHref())
-        ->setType($type);
-      $view->addAction($action);
-    }
-
-    // Build out edit interface
-    if ($viewer->isLoggedIn()) {
-      $view->addAction(
-        id(new PhabricatorActionView())
-          ->setType(PhabricatorActionView::TYPE_DIVIDER));
-      $view->addAction(
-        id(new PhabricatorActionView())
-          ->setName(pht('Edit Favorites'))
-          ->setHref('/favorites/'));
-    }
-
-    return $view;
-  }
-
 }
diff --git a/src/applications/favorites/application/PhabricatorFavoritesApplication.php b/src/applications/favorites/engineextension/PhabricatorFavoritesMainMenuBarExtension.php
copy from src/applications/favorites/application/PhabricatorFavoritesApplication.php
copy to src/applications/favorites/engineextension/PhabricatorFavoritesMainMenuBarExtension.php
--- a/src/applications/favorites/application/PhabricatorFavoritesApplication.php
+++ b/src/applications/favorites/engineextension/PhabricatorFavoritesMainMenuBarExtension.php
@@ -1,47 +1,29 @@
 <?php
 
-final class PhabricatorFavoritesApplication extends PhabricatorApplication {
+final class PhabricatorFavoritesMainMenuBarExtension
+  extends PhabricatorMainMenuBarExtension {
 
-  public function getBaseURI() {
-    return '/favorites/';
-  }
+  const MAINMENUBARKEY = 'favorites';
 
-  public function getName() {
-    return pht('Favorites');
+  public function isExtensionEnabledForViewer(PhabricatorUser $viewer) {
+    return PhabricatorApplication::isClassInstalledForViewer(
+      'PhabricatorFavoritesApplication',
+      $viewer);
   }
 
-  public function getShortDescription() {
-    return pht('Favorite Items');
+  public function getExtensionOrder() {
+    return 1100;
   }
 
-  public function getIcon() {
-    return 'fa-star';
-  }
+  public function buildMainMenus() {
+    $viewer = $this->getViewer();
 
-  public function getRoutes() {
-    return array(
-      '/favorites/' => array(
-        '' => 'PhabricatorFavoritesMainController',
-        '(?P<type>global|personal)/item/' => $this->getProfileMenuRouting(
-          'PhabricatorFavoritesMenuItemController'),
-      ),
-    );
-  }
-
-  public function isLaunchable() {
-    return false;
-  }
-
-  public function buildMainMenuExtraNodes(
-    PhabricatorUser $viewer,
-    PhabricatorController $controller = null) {
-
-    $dropdown = $this->renderFavoritesDropdown($viewer);
+    $dropdown = $this->newDropdown($viewer);
     if (!$dropdown) {
       return null;
     }
 
-    return id(new PHUIButtonView())
+    $favorites_menu = id(new PHUIButtonView())
       ->setTag('a')
       ->setHref('#')
       ->setIcon('fa-star')
@@ -49,14 +31,16 @@
       ->setNoCSS(true)
       ->setDropdown(true)
       ->setDropdownMenu($dropdown);
-  }
 
-  private function renderFavoritesDropdown(PhabricatorUser $viewer) {
-    $application = __CLASS__;
+    return array(
+      $favorites_menu,
+    );
+  }
 
+  private function newDropdown(PhabricatorUser $viewer) {
     $applications = id(new PhabricatorApplicationQuery())
       ->setViewer($viewer)
-      ->withClasses(array($application))
+      ->withClasses(array('PhabricatorFavoritesApplication'))
       ->withInstalled(true)
       ->execute();
     $favorites = head($applications);
@@ -96,7 +80,6 @@
       $view->addAction($action);
     }
 
-    // Build out edit interface
     if ($viewer->isLoggedIn()) {
       $view->addAction(
         id(new PhabricatorActionView())
diff --git a/src/applications/home/application/PhabricatorHomeApplication.php b/src/applications/home/application/PhabricatorHomeApplication.php
--- a/src/applications/home/application/PhabricatorHomeApplication.php
+++ b/src/applications/home/application/PhabricatorHomeApplication.php
@@ -42,114 +42,4 @@
     return 9;
   }
 
-  public function buildMainMenuExtraNodes(
-    PhabricatorUser $viewer,
-    PhabricatorController $controller = null) {
-
-    if (!$viewer->isLoggedIn()) {
-      return;
-    }
-
-    $image = $viewer->getProfileImageURI();
-
-    $profile_image = id(new PHUIIconView())
-      ->setImage($image)
-      ->setHeadSize(PHUIIconView::HEAD_SMALL);
-
-    if ($controller) {
-      $application = $controller->getCurrentApplication();
-    } else {
-      $application = null;
-    }
-    $dropdown_menu = $this->renderUserDropdown($viewer, $application);
-
-    $menu_id = celerity_generate_unique_node_id();
-
-    Javelin::initBehavior(
-      'user-menu',
-      array(
-        'menuID' => $menu_id,
-        'menu' => $dropdown_menu->getDropdownMenuMetadata(),
-      ));
-
-    return id(new PHUIButtonView())
-      ->setID($menu_id)
-      ->setTag('a')
-      ->setHref('/p/'.$viewer->getUsername().'/')
-      ->setIcon($profile_image)
-      ->addClass('phabricator-core-user-menu')
-      ->setHasCaret(true)
-      ->setNoCSS(true);
-  }
-
-  private function renderUserDropdown(
-    PhabricatorUser $viewer,
-    $application) {
-
-    $person_to_show = id(new PHUIObjectItemView())
-      ->setObjectName($viewer->getRealName())
-      ->setSubHead($viewer->getUsername())
-      ->setImageURI($viewer->getProfileImageURI());
-
-    $user_view = id(new PHUIObjectItemListView())
-      ->setViewer($viewer)
-      ->setFlush(true)
-      ->setSimple(true)
-      ->addItem($person_to_show)
-      ->addClass('phabricator-core-user-profile-object');
-
-    $view = id(new PhabricatorActionListView())
-      ->setViewer($viewer);
-
-    // User Menu
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->appendChild($user_view));
-
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->setType(PhabricatorActionView::TYPE_DIVIDER));
-
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Profile'))
-        ->setHref('/p/'.$viewer->getUsername().'/'));
-
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Settings'))
-        ->setHref('/settings/user/'.$viewer->getUsername().'/'));
-
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Manage'))
-        ->setHref('/people/manage/'.$viewer->getID().'/'));
-
-    // Help Menus
-    if ($application) {
-      $help_links = $application->getHelpMenuItems($viewer);
-      if ($help_links) {
-        foreach ($help_links as $link) {
-          $view->addAction($link);
-        }
-      }
-    }
-
-    // Logout Menu
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->addSigil('logout-item')
-        ->setType(PhabricatorActionView::TYPE_DIVIDER));
-
-    $view->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Log Out %s', $viewer->getUsername()))
-        ->addSigil('logout-item')
-        ->setHref('/logout/')
-        ->setColor(PhabricatorActionView::RED)
-        ->setWorkflow(true));
-
-    return $view;
-  }
-
 }
diff --git a/src/applications/home/application/PhabricatorHomeApplication.php b/src/applications/people/engineextension/PeopleMainMenuBarExtension.php
copy from src/applications/home/application/PhabricatorHomeApplication.php
copy to src/applications/people/engineextension/PeopleMainMenuBarExtension.php
--- a/src/applications/home/application/PhabricatorHomeApplication.php
+++ b/src/applications/people/engineextension/PeopleMainMenuBarExtension.php
@@ -1,67 +1,22 @@
 <?php
 
-final class PhabricatorHomeApplication extends PhabricatorApplication {
+final class PeopleMainMenuBarExtension
+  extends PhabricatorMainMenuBarExtension {
 
-  const DASHBOARD_DEFAULT = 'dashboard:default';
+  const MAINMENUBARKEY = 'user';
 
-  public function getBaseURI() {
-    return '/home/';
+  public function isExtensionEnabledForViewer(PhabricatorUser $viewer) {
+    return $viewer->isLoggedIn();
   }
 
-  public function getName() {
-    return pht('Home');
+  public function getExtensionOrder() {
+    return 1200;
   }
 
-  public function getShortDescription() {
-    return pht('Command Center');
-  }
-
-  public function getIcon() {
-    return 'fa-home';
-  }
-
-  public function getRoutes() {
-    return array(
-      '/' => 'PhabricatorHomeMainController',
-      '/(?P<only>home)/' => 'PhabricatorHomeMainController',
-      '/home/' => array(
-        'menu/' => array(
-          '' => 'PhabricatorHomeMenuController',
-          '(?P<type>global|personal)/item/' => $this->getProfileMenuRouting(
-          'PhabricatorHomeMenuItemController'),
-        ),
-      ),
-    );
-  }
-
-  public function isLaunchable() {
-    return false;
-  }
-
-  public function getApplicationOrder() {
-    return 9;
-  }
-
-  public function buildMainMenuExtraNodes(
-    PhabricatorUser $viewer,
-    PhabricatorController $controller = null) {
-
-    if (!$viewer->isLoggedIn()) {
-      return;
-    }
-
-    $image = $viewer->getProfileImageURI();
-
-    $profile_image = id(new PHUIIconView())
-      ->setImage($image)
-      ->setHeadSize(PHUIIconView::HEAD_SMALL);
-
-    if ($controller) {
-      $application = $controller->getCurrentApplication();
-    } else {
-      $application = null;
-    }
-    $dropdown_menu = $this->renderUserDropdown($viewer, $application);
+  public function buildMainMenus() {
+    $viewer = $this->getViewer();
+    $application = $this->getApplication();
+    $dropdown_menu = $this->newDropdown($viewer, $application);
 
     $menu_id = celerity_generate_unique_node_id();
 
@@ -72,7 +27,12 @@
         'menu' => $dropdown_menu->getDropdownMenuMetadata(),
       ));
 
-    return id(new PHUIButtonView())
+    $image = $viewer->getProfileImageURI();
+    $profile_image = id(new PHUIIconView())
+      ->setImage($image)
+      ->setHeadSize(PHUIIconView::HEAD_SMALL);
+
+    $user_menu = id(new PHUIButtonView())
       ->setID($menu_id)
       ->setTag('a')
       ->setHref('/p/'.$viewer->getUsername().'/')
@@ -80,9 +40,13 @@
       ->addClass('phabricator-core-user-menu')
       ->setHasCaret(true)
       ->setNoCSS(true);
+
+    return array(
+      $user_menu,
+    );
   }
 
-  private function renderUserDropdown(
+  private function newDropdown(
     PhabricatorUser $viewer,
     $application) {
 
@@ -101,7 +65,6 @@
     $view = id(new PhabricatorActionListView())
       ->setViewer($viewer);
 
-    // User Menu
     $view->addAction(
       id(new PhabricatorActionView())
         ->appendChild($user_view));
@@ -125,7 +88,6 @@
         ->setName(pht('Manage'))
         ->setHref('/people/manage/'.$viewer->getID().'/'));
 
-    // Help Menus
     if ($application) {
       $help_links = $application->getHelpMenuItems($viewer);
       if ($help_links) {
@@ -135,7 +97,6 @@
       }
     }
 
-    // Logout Menu
     $view->addAction(
       id(new PhabricatorActionView())
         ->addSigil('logout-item')
diff --git a/src/view/page/menu/PhabricatorMainMenuBarExtension.php b/src/view/page/menu/PhabricatorMainMenuBarExtension.php
--- a/src/view/page/menu/PhabricatorMainMenuBarExtension.php
+++ b/src/view/page/menu/PhabricatorMainMenuBarExtension.php
@@ -64,12 +64,17 @@
     return true;
   }
 
+  public function getExtensionOrder() {
+    return 1000;
+  }
+
   abstract public function buildMainMenus();
 
   final public static function getAllExtensions() {
     return id(new PhutilClassMapQuery())
       ->setAncestorClass(__CLASS__)
       ->setUniqueMethod('getExtensionKey')
+      ->setSortMethod('getExtensionOrder')
       ->execute();
   }
 
diff --git a/src/view/page/menu/PhabricatorMainMenuView.php b/src/view/page/menu/PhabricatorMainMenuView.php
--- a/src/view/page/menu/PhabricatorMainMenuView.php
+++ b/src/view/page/menu/PhabricatorMainMenuView.php
@@ -82,20 +82,6 @@
         phutil_implode_html(' ', $aural));
     }
 
-    // Build out Header Menus
-    $applications = PhabricatorApplication::getAllInstalledApplications();
-
-    $menus = array();
-    $controller = $this->getController();
-    foreach ($applications as $application) {
-      $app_extra = $application->buildMainMenuExtraNodes(
-        $viewer,
-        $controller);
-      if ($app_extra !== null) {
-        $menus[] = $app_extra;
-      }
-    }
-
     $extensions = PhabricatorMainMenuBarExtension::getAllEnabledExtensions();
     foreach ($extensions as $extension) {
       $extension->setViewer($viewer);
@@ -116,13 +102,18 @@
       }
     }
 
-    // Builds out "login" button
+    $menus = array();
     foreach ($extensions as $extension) {
       foreach ($extension->buildMainMenus() as $menu) {
         $menus[] = $menu;
       }
     }
 
+    // Because we display these with "float: right", reverse their order before
+    // rendering them into the document so that the extension order and display
+    // order are the same.
+    $menus = array_reverse($menus);
+
     foreach ($menus as $menu) {
       $menu_bar[] = $menu;
     }