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
@@ -2419,6 +2419,7 @@
     'PhabricatorLegalpadDocumentPHIDType' => 'applications/legalpad/phid/PhabricatorLegalpadDocumentPHIDType.php',
     'PhabricatorLegalpadSignaturePolicyRule' => 'applications/legalpad/policyrule/PhabricatorLegalpadSignaturePolicyRule.php',
     'PhabricatorLibraryTestCase' => '__tests__/PhabricatorLibraryTestCase.php',
+    'PhabricatorLinkProfilePanel' => 'applications/search/profilepanel/PhabricatorLinkProfilePanel.php',
     'PhabricatorLipsumArtist' => 'applications/lipsum/image/PhabricatorLipsumArtist.php',
     'PhabricatorLipsumGenerateWorkflow' => 'applications/lipsum/management/PhabricatorLipsumGenerateWorkflow.php',
     'PhabricatorLipsumManagementWorkflow' => 'applications/lipsum/management/PhabricatorLipsumManagementWorkflow.php',
@@ -2826,6 +2827,13 @@
     'PhabricatorPolicyTestObject' => 'applications/policy/__tests__/PhabricatorPolicyTestObject.php',
     'PhabricatorPolicyType' => 'applications/policy/constants/PhabricatorPolicyType.php',
     'PhabricatorPonderApplication' => 'applications/ponder/application/PhabricatorPonderApplication.php',
+    'PhabricatorProfilePanel' => 'applications/search/profilepanel/PhabricatorProfilePanel.php',
+    'PhabricatorProfilePanelConfiguration' => 'applications/search/storage/PhabricatorProfilePanelConfiguration.php',
+    'PhabricatorProfilePanelConfigurationQuery' => 'applications/search/query/PhabricatorProfilePanelConfigurationQuery.php',
+    'PhabricatorProfilePanelConfigurationTransaction' => 'applications/search/storage/PhabricatorProfilePanelConfigurationTransaction.php',
+    'PhabricatorProfilePanelEngine' => 'applications/search/engine/PhabricatorProfilePanelEngine.php',
+    'PhabricatorProfilePanelInterface' => 'applications/search/interface/PhabricatorProfilePanelInterface.php',
+    'PhabricatorProfilePanelPHIDType' => 'applications/search/phidtype/PhabricatorProfilePanelPHIDType.php',
     'PhabricatorProject' => 'applications/project/storage/PhabricatorProject.php',
     'PhabricatorProjectAddHeraldAction' => 'applications/project/herald/PhabricatorProjectAddHeraldAction.php',
     'PhabricatorProjectApplication' => 'applications/project/application/PhabricatorProjectApplication.php',
@@ -2856,6 +2864,7 @@
     'PhabricatorProjectDAO' => 'applications/project/storage/PhabricatorProjectDAO.php',
     'PhabricatorProjectDatasource' => 'applications/project/typeahead/PhabricatorProjectDatasource.php',
     'PhabricatorProjectDescriptionField' => 'applications/project/customfield/PhabricatorProjectDescriptionField.php',
+    'PhabricatorProjectDetailsProfilePanel' => 'applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php',
     'PhabricatorProjectEditController' => 'applications/project/controller/PhabricatorProjectEditController.php',
     'PhabricatorProjectEditEngine' => 'applications/project/engine/PhabricatorProjectEditEngine.php',
     'PhabricatorProjectEditPictureController' => 'applications/project/controller/PhabricatorProjectEditPictureController.php',
@@ -2877,6 +2886,7 @@
     'PhabricatorProjectMembersDatasource' => 'applications/project/typeahead/PhabricatorProjectMembersDatasource.php',
     'PhabricatorProjectMembersEditController' => 'applications/project/controller/PhabricatorProjectMembersEditController.php',
     'PhabricatorProjectMembersPolicyRule' => 'applications/project/policyrule/PhabricatorProjectMembersPolicyRule.php',
+    'PhabricatorProjectMembersProfilePanel' => 'applications/project/profilepanel/PhabricatorProjectMembersProfilePanel.php',
     'PhabricatorProjectMembersRemoveController' => 'applications/project/controller/PhabricatorProjectMembersRemoveController.php',
     'PhabricatorProjectMilestonesController' => 'applications/project/controller/PhabricatorProjectMilestonesController.php',
     'PhabricatorProjectMoveController' => 'applications/project/controller/PhabricatorProjectMoveController.php',
@@ -2909,6 +2919,7 @@
     'PhabricatorProjectUserFunctionDatasource' => 'applications/project/typeahead/PhabricatorProjectUserFunctionDatasource.php',
     'PhabricatorProjectViewController' => 'applications/project/controller/PhabricatorProjectViewController.php',
     'PhabricatorProjectWatchController' => 'applications/project/controller/PhabricatorProjectWatchController.php',
+    'PhabricatorProjectWorkboardProfilePanel' => 'applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php',
     'PhabricatorProjectsEditEngineExtension' => 'applications/project/engineextension/PhabricatorProjectsEditEngineExtension.php',
     'PhabricatorProjectsEditField' => 'applications/transactions/editfield/PhabricatorProjectsEditField.php',
     'PhabricatorProjectsFulltextEngineExtension' => 'applications/project/engineextension/PhabricatorProjectsFulltextEngineExtension.php',
@@ -6700,6 +6711,7 @@
     'PhabricatorLegalpadDocumentPHIDType' => 'PhabricatorPHIDType',
     'PhabricatorLegalpadSignaturePolicyRule' => 'PhabricatorPolicyRule',
     'PhabricatorLibraryTestCase' => 'PhutilLibraryTestCase',
+    'PhabricatorLinkProfilePanel' => 'PhabricatorProfilePanel',
     'PhabricatorLipsumArtist' => 'Phobject',
     'PhabricatorLipsumGenerateWorkflow' => 'PhabricatorLipsumManagementWorkflow',
     'PhabricatorLipsumManagementWorkflow' => 'PhabricatorManagementWorkflow',
@@ -7171,6 +7183,16 @@
     ),
     'PhabricatorPolicyType' => 'PhabricatorPolicyConstants',
     'PhabricatorPonderApplication' => 'PhabricatorApplication',
+    'PhabricatorProfilePanel' => 'Phobject',
+    'PhabricatorProfilePanelConfiguration' => array(
+      'PhabricatorSearchDAO',
+      'PhabricatorPolicyInterface',
+      'PhabricatorExtendedPolicyInterface',
+    ),
+    'PhabricatorProfilePanelConfigurationQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
+    'PhabricatorProfilePanelConfigurationTransaction' => 'PhabricatorApplicationTransaction',
+    'PhabricatorProfilePanelEngine' => 'Phobject',
+    'PhabricatorProfilePanelPHIDType' => 'PhabricatorPHIDType',
     'PhabricatorProject' => array(
       'PhabricatorProjectDAO',
       'PhabricatorApplicationTransactionInterface',
@@ -7182,6 +7204,7 @@
       'PhabricatorDestructibleInterface',
       'PhabricatorFulltextInterface',
       'PhabricatorConduitResultInterface',
+      'PhabricatorProfilePanelInterface',
     ),
     'PhabricatorProjectAddHeraldAction' => 'PhabricatorProjectHeraldAction',
     'PhabricatorProjectApplication' => 'PhabricatorApplication',
@@ -7223,6 +7246,7 @@
     'PhabricatorProjectDAO' => 'PhabricatorLiskDAO',
     'PhabricatorProjectDatasource' => 'PhabricatorTypeaheadDatasource',
     'PhabricatorProjectDescriptionField' => 'PhabricatorProjectStandardCustomField',
+    'PhabricatorProjectDetailsProfilePanel' => 'PhabricatorProfilePanel',
     'PhabricatorProjectEditController' => 'PhabricatorProjectController',
     'PhabricatorProjectEditEngine' => 'PhabricatorEditEngine',
     'PhabricatorProjectEditPictureController' => 'PhabricatorProjectController',
@@ -7243,6 +7267,7 @@
     'PhabricatorProjectMembersDatasource' => 'PhabricatorTypeaheadCompositeDatasource',
     'PhabricatorProjectMembersEditController' => 'PhabricatorProjectController',
     'PhabricatorProjectMembersPolicyRule' => 'PhabricatorPolicyRule',
+    'PhabricatorProjectMembersProfilePanel' => 'PhabricatorProfilePanel',
     'PhabricatorProjectMembersRemoveController' => 'PhabricatorProjectController',
     'PhabricatorProjectMilestonesController' => 'PhabricatorProjectController',
     'PhabricatorProjectMoveController' => 'PhabricatorProjectController',
@@ -7278,6 +7303,7 @@
     'PhabricatorProjectUserFunctionDatasource' => 'PhabricatorTypeaheadCompositeDatasource',
     'PhabricatorProjectViewController' => 'PhabricatorProjectController',
     'PhabricatorProjectWatchController' => 'PhabricatorProjectController',
+    'PhabricatorProjectWorkboardProfilePanel' => 'PhabricatorProfilePanel',
     'PhabricatorProjectsEditEngineExtension' => 'PhabricatorEditEngineExtension',
     'PhabricatorProjectsEditField' => 'PhabricatorTokenizerEditField',
     'PhabricatorProjectsFulltextEngineExtension' => 'PhabricatorFulltextEngineExtension',
diff --git a/src/applications/project/controller/PhabricatorProjectBoardController.php b/src/applications/project/controller/PhabricatorProjectBoardController.php
--- a/src/applications/project/controller/PhabricatorProjectBoardController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardController.php
@@ -6,7 +6,7 @@
   public function buildIconNavView(PhabricatorProject $project) {
     $id = $project->getID();
     $nav = parent::buildIconNavView($project);
-    $nav->selectFilter("board/{$id}/");
+    $nav->selectFilter(PhabricatorProject::PANEL_WORKBOARD);
     $nav->addClass('project-board-nav');
     return $nav;
   }
diff --git a/src/applications/project/controller/PhabricatorProjectController.php b/src/applications/project/controller/PhabricatorProjectController.php
--- a/src/applications/project/controller/PhabricatorProjectController.php
+++ b/src/applications/project/controller/PhabricatorProjectController.php
@@ -86,6 +86,8 @@
   public function buildSideNavView($for_app = false) {
     $project = $this->getProject();
 
+
+
     $nav = new AphrontSideNavFilterView();
     $nav->setBaseURI(new PhutilURI($this->getApplicationURI()));
 
@@ -115,65 +117,13 @@
   }
 
   public function buildIconNavView(PhabricatorProject $project) {
-    $this->setProject($project);
     $viewer = $this->getViewer();
-    $id = $project->getID();
-    $picture = $project->getProfileImageURI();
-    $name = $project->getName();
 
-    $columns = id(new PhabricatorProjectColumnQuery())
+    $engine = id(new PhabricatorProfilePanelEngine())
       ->setViewer($viewer)
-      ->withProjectPHIDs(array($project->getPHID()))
-      ->execute();
-    if ($columns) {
-      $board_icon = 'fa-columns';
-    } else {
-      $board_icon = 'fa-columns grey';
-    }
-
-    $nav = new AphrontSideNavFilterView();
-    $nav->setIconNav(true);
-    $nav->setBaseURI(new PhutilURI($this->getApplicationURI()));
-    $nav->addIcon("profile/{$id}/", $name, null, $picture);
-
-    $class = 'PhabricatorManiphestApplication';
-    if (PhabricatorApplication::isClassInstalledForViewer($class, $viewer)) {
-      $phid = $project->getPHID();
-      $nav->addIcon("board/{$id}/", pht('Workboard'), $board_icon);
-      $query_uri = urisprintf(
-        '/maniphest/?statuses=open()&projects=%s#R',
-        $phid);
-      $nav->addIcon(null, pht('Open Tasks'), 'fa-anchor', null, $query_uri);
-    }
-
-    $nav->addIcon("feed/{$id}/", pht('Feed'), 'fa-newspaper-o');
-    $nav->addIcon("members/{$id}/", pht('Members'), 'fa-group');
+      ->setProfileObject($project);
 
-    if (false && PhabricatorEnv::getEnvConfig('phabricator.show-prototypes')) {
-      if ($project->supportsSubprojects()) {
-        $subprojects_icon = 'fa-sitemap';
-      } else {
-        $subprojects_icon = 'fa-sitemap grey';
-      }
-
-      $key = PhabricatorProjectIconSet::getMilestoneIconKey();
-      $milestones_icon = PhabricatorProjectIconSet::getIconIcon($key);
-      if (!$project->supportsMilestones()) {
-        $milestones_icon = "{$milestones_icon} grey";
-      }
-
-      $nav->addIcon(
-        "subprojects/{$id}/",
-        pht('Subprojects'),
-        $subprojects_icon);
-
-      $nav->addIcon(
-        "milestones/{$id}/",
-        pht('Milestones'),
-        $milestones_icon);
-    }
-
-    return $nav;
+    return $engine->buildNavigation();
   }
 
   protected function buildApplicationCrumbs() {
diff --git a/src/applications/project/controller/PhabricatorProjectEditPictureController.php b/src/applications/project/controller/PhabricatorProjectEditPictureController.php
--- a/src/applications/project/controller/PhabricatorProjectEditPictureController.php
+++ b/src/applications/project/controller/PhabricatorProjectEditPictureController.php
@@ -281,7 +281,7 @@
       ->setForm($upload_form);
 
     $nav = $this->buildIconNavView($project);
-    $nav->selectFilter("edit/{$id}/");
+    $nav->selectFilter(PhabricatorProject::PANEL_PROFILE);
     $nav->appendChild($form_box);
     $nav->appendChild($upload_box);
 
diff --git a/src/applications/project/controller/PhabricatorProjectFeedController.php b/src/applications/project/controller/PhabricatorProjectFeedController.php
--- a/src/applications/project/controller/PhabricatorProjectFeedController.php
+++ b/src/applications/project/controller/PhabricatorProjectFeedController.php
@@ -34,7 +34,7 @@
       ->appendChild($feed);
 
     $nav = $this->buildIconNavView($project);
-    $nav->selectFilter("feed/{$id}/");
+    $nav->selectFilter('feed');
 
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->addTextCrumb(pht('Feed'));
diff --git a/src/applications/project/controller/PhabricatorProjectMembersEditController.php b/src/applications/project/controller/PhabricatorProjectMembersEditController.php
--- a/src/applications/project/controller/PhabricatorProjectMembersEditController.php
+++ b/src/applications/project/controller/PhabricatorProjectMembersEditController.php
@@ -96,7 +96,7 @@
     $member_list = $this->renderMemberList($project, $handles);
 
     $nav = $this->buildIconNavView($project);
-    $nav->selectFilter("members/{$id}/");
+    $nav->selectFilter(PhabricatorProject::PANEL_MEMBERS);
 
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->addTextCrumb(pht('Members'));
diff --git a/src/applications/project/controller/PhabricatorProjectMilestonesController.php b/src/applications/project/controller/PhabricatorProjectMilestonesController.php
--- a/src/applications/project/controller/PhabricatorProjectMilestonesController.php
+++ b/src/applications/project/controller/PhabricatorProjectMilestonesController.php
@@ -77,7 +77,7 @@
         ->renderList());
 
     $nav = $this->buildIconNavView($project);
-    $nav->selectFilter("milestones/{$id}/");
+    $nav->selectFilter(PhabricatorProject::PANEL_MILESTONES);
 
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->addTextCrumb(pht('Milestones'));
diff --git a/src/applications/project/controller/PhabricatorProjectProfileController.php b/src/applications/project/controller/PhabricatorProjectProfileController.php
--- a/src/applications/project/controller/PhabricatorProjectProfileController.php
+++ b/src/applications/project/controller/PhabricatorProjectProfileController.php
@@ -44,7 +44,7 @@
     $timeline->setShouldTerminate(true);
 
     $nav = $this->buildIconNavView($project);
-    $nav->selectFilter("profile/{$id}/");
+    $nav->selectFilter(PhabricatorProject::PANEL_PROFILE);
 
     $crumbs = $this->buildApplicationCrumbs();
 
diff --git a/src/applications/project/controller/PhabricatorProjectSubprojectsController.php b/src/applications/project/controller/PhabricatorProjectSubprojectsController.php
--- a/src/applications/project/controller/PhabricatorProjectSubprojectsController.php
+++ b/src/applications/project/controller/PhabricatorProjectSubprojectsController.php
@@ -76,7 +76,7 @@
         ->renderList());
 
     $nav = $this->buildIconNavView($project);
-    $nav->selectFilter("subprojects/{$id}/");
+    $nav->selectFilter(PhabricatorProject::PANEL_SUBPROJECTS);
 
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->addTextCrumb(pht('Subprojects'));
diff --git a/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php b/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php
@@ -0,0 +1,31 @@
+<?php
+
+final class PhabricatorProjectDetailsProfilePanel
+  extends PhabricatorProfilePanel {
+
+  const PANELKEY = 'project.details';
+
+  protected function newNavigationMenuItems(
+    PhabricatorProfilePanelConfiguration $config) {
+
+    $project = $config->getProfileObject();
+
+    $id = $project->getID();
+    $picture = $project->getProfileImageURI();
+    $name = $project->getName();
+
+    $href = "/project/profile/{$id}/";
+
+    $item = id(new PHUIListItemView())
+      ->setRenderNameAsTooltip(true)
+      ->setType(PHUIListItemView::TYPE_ICON_NAV)
+      ->setHref($href)
+      ->setName($name)
+      ->setProfileImage($picture);
+
+    return array(
+      $item,
+    );
+  }
+
+}
diff --git a/src/applications/project/profilepanel/PhabricatorProjectMembersProfilePanel.php b/src/applications/project/profilepanel/PhabricatorProjectMembersProfilePanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/project/profilepanel/PhabricatorProjectMembersProfilePanel.php
@@ -0,0 +1,31 @@
+<?php
+
+final class PhabricatorProjectMembersProfilePanel
+  extends PhabricatorProfilePanel {
+
+  const PANELKEY = 'project.members';
+
+  protected function newNavigationMenuItems(
+    PhabricatorProfilePanelConfiguration $config) {
+
+    $project = $config->getProfileObject();
+
+    $id = $project->getID();
+
+    $name = pht('Members');
+    $icon = 'fa-group';
+    $href = "/project/members/{$id}/";
+
+    $item = id(new PHUIListItemView())
+      ->setRenderNameAsTooltip(true)
+      ->setType(PHUIListItemView::TYPE_ICON_NAV)
+      ->setHref($href)
+      ->setName($name)
+      ->setIcon($icon);
+
+    return array(
+      $item,
+    );
+  }
+
+}
diff --git a/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php b/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php
@@ -0,0 +1,46 @@
+<?php
+
+final class PhabricatorProjectWorkboardProfilePanel
+  extends PhabricatorProfilePanel {
+
+  const PANELKEY = 'project.workboard';
+
+  protected function newNavigationMenuItems(
+    PhabricatorProfilePanelConfiguration $config) {
+    $viewer = $this->getViewer();
+
+    // Workboards are only available if Maniphest is installed.
+    $class = 'PhabricatorManiphestApplication';
+    if (!PhabricatorApplication::isClassInstalledForViewer($class, $viewer)) {
+      return array();
+    }
+
+    $project = $config->getProfileObject();
+
+    $columns = id(new PhabricatorProjectColumnQuery())
+      ->setViewer($viewer)
+      ->withProjectPHIDs(array($project->getPHID()))
+      ->execute();
+    if ($columns) {
+      $icon = 'fa-columns';
+    } else {
+      $icon = 'fa-columns grey';
+    }
+
+    $id = $project->getID();
+    $href = "/project/board/{$id}/";
+    $name = pht('Workboard');
+
+    $item = id(new PHUIListItemView())
+      ->setRenderNameAsTooltip(true)
+      ->setType(PHUIListItemView::TYPE_ICON_NAV)
+      ->setHref($href)
+      ->setName($name)
+      ->setIcon($icon);
+
+    return array(
+      $item,
+    );
+  }
+
+}
diff --git a/src/applications/project/storage/PhabricatorProject.php b/src/applications/project/storage/PhabricatorProject.php
--- a/src/applications/project/storage/PhabricatorProject.php
+++ b/src/applications/project/storage/PhabricatorProject.php
@@ -10,7 +10,8 @@
     PhabricatorCustomFieldInterface,
     PhabricatorDestructibleInterface,
     PhabricatorFulltextInterface,
-    PhabricatorConduitResultInterface {
+    PhabricatorConduitResultInterface,
+    PhabricatorProfilePanelInterface {
 
   protected $name;
   protected $status = PhabricatorProjectStatus::STATUS_ACTIVE;
@@ -49,6 +50,12 @@
 
   const TABLE_DATASOURCE_TOKEN = 'project_datasourcetoken';
 
+  const PANEL_PROFILE = 'project.profile';
+  const PANEL_WORKBOARD = 'project.workboard';
+  const PANEL_MEMBERS = 'project.members';
+  const PANEL_MILESTONES = 'project.milestones';
+  const PANEL_SUBPROJECTS = 'project.subprojects';
+
   public static function initializeNewProject(PhabricatorUser $actor) {
     $app = id(new PhabricatorApplicationQuery())
       ->setViewer(PhabricatorUser::getOmnipotentUser())
@@ -644,4 +651,47 @@
     return array();
   }
 
+
+/* -(  PhabricatorProfilePanelInterface  )----------------------------------- */
+
+
+  public function getBuiltinProfilePanels() {
+    $panels = array();
+
+    $panels[] = id(new PhabricatorProfilePanelConfiguration())
+      ->setBuiltinKey(self::PANEL_PROFILE)
+      ->setPanelKey(PhabricatorProjectDetailsProfilePanel::PANELKEY);
+
+    $panels[] = id(new PhabricatorProfilePanelConfiguration())
+      ->setBuiltinKey(self::PANEL_WORKBOARD)
+      ->setPanelKey(PhabricatorProjectWorkboardProfilePanel::PANELKEY);
+
+    // TODO: This is temporary.
+    $href = urisprintf(
+      '/maniphest/?statuses=open()&projects=%s#R',
+      $this->getPHID());
+
+    $panels[] = id(new PhabricatorProfilePanelConfiguration())
+      ->setBuiltinKey('tasks')
+      ->setPanelKey(PhabricatorLinkProfilePanel::PANELKEY)
+      ->setPanelProperty('icon', 'fa-anchor')
+      ->setPanelProperty('name', pht('Open Tasks'))
+      ->setPanelProperty('href', $href);
+
+    // TODO: This is temporary.
+    $id = $this->getID();
+    $panels[] = id(new PhabricatorProfilePanelConfiguration())
+      ->setBuiltinKey('feed')
+      ->setPanelKey(PhabricatorLinkProfilePanel::PANELKEY)
+      ->setPanelProperty('icon', 'fa-newspaper-o')
+      ->setPanelProperty('name', pht('Feed'))
+      ->setPanelProperty('href', "/project/feed/{$id}/");
+
+    $panels[] = id(new PhabricatorProfilePanelConfiguration())
+      ->setBuiltinKey(self::PANEL_MEMBERS)
+      ->setPanelKey(PhabricatorProjectMembersProfilePanel::PANELKEY);
+
+    return $panels;
+  }
+
 }
diff --git a/src/applications/search/engine/PhabricatorProfilePanelEngine.php b/src/applications/search/engine/PhabricatorProfilePanelEngine.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/engine/PhabricatorProfilePanelEngine.php
@@ -0,0 +1,152 @@
+<?php
+
+final class PhabricatorProfilePanelEngine extends Phobject {
+
+  private $viewer;
+  private $profileObject;
+  private $panels;
+
+  public function setViewer(PhabricatorUser $viewer) {
+    $this->viewer = $viewer;
+    return $this;
+  }
+
+  public function getViewer() {
+    return $this->viewer;
+  }
+
+  public function setProfileObject(
+    PhabricatorProfilePanelInterface $profile_object) {
+    $this->profileObject = $profile_object;
+    return $this;
+  }
+
+  public function getProfileObject() {
+    return $this->profileObject;
+  }
+
+  public function buildNavigation() {
+    $nav = id(new AphrontSideNavFilterView())
+      ->setIconNav(true)
+      ->setBaseURI(new PhutilURI('/project/'));
+
+    $panels = $this->getPanels();
+
+    foreach ($panels as $panel) {
+      $items = $panel->buildNavigationMenuItems();
+      foreach ($items as $item) {
+        $this->validateNavigationMenuItem($item);
+      }
+
+      // If the panel produced only a single item which does not otherwise
+      // have a key, try to automatically assign it a reasonable key. This
+      // makes selecting the correct item simpler.
+
+      if (count($items) == 1) {
+        $item = head($items);
+        if ($item->getKey() === null) {
+          $builtin_key = $panel->getBuiltinKey();
+          $panel_phid = $panel->getPHID();
+          if ($builtin_key !== null) {
+            $item->setKey($builtin_key);
+          } else if ($panel_phid !== null) {
+            $item->setKey($panel_phid);
+          }
+        }
+      }
+
+      foreach ($items as $item) {
+        $nav->addMenuItem($item);
+      }
+    }
+
+    $nav->selectFilter(null);
+
+    return $nav;
+  }
+
+  private function getPanels() {
+    if ($this->panels === null) {
+      $this->panels = $this->loadPanels();
+    }
+
+    return $this->panels;
+  }
+
+  private function loadPanels() {
+    $viewer = $this->getViewer();
+
+    $panels = $this->loadBuiltinProfilePanels();
+
+    // TODO: Load persisted panels.
+
+    foreach ($panels as $panel) {
+      $impl = $panel->getPanel();
+
+      $impl->setViewer($viewer);
+    }
+
+    return $panels;
+  }
+
+  private function loadBuiltinProfilePanels() {
+    $object = $this->getProfileObject();
+    $builtins = $object->getBuiltinProfilePanels();
+
+    $panels = PhabricatorProfilePanel::getAllPanels();
+
+    $order = 1;
+    $map = array();
+    foreach ($builtins as $builtin) {
+      $builtin_key = $builtin->getBuiltinKey();
+
+      if (!$builtin_key) {
+        throw new Exception(
+          pht(
+            'Object produced a builtin panel with no builtin panel key! '.
+            'Builtin panels must have a unique key.'));
+      }
+
+      if (isset($map[$builtin_key])) {
+        throw new Exception(
+          pht(
+            'Object produced two panels with the same builtin key ("%s"). '.
+            'Each panel must have a unique builtin key.',
+            $builtin_key));
+      }
+
+      $panel_key = $builtin->getPanelKey();
+
+      $panel = idx($panels, $panel_key);
+      if (!$panel) {
+        throw new Exception(
+          pht(
+            'Builtin panel ("%s") specifies a bad panel key ("%s"); there '.
+            'is no corresponding panel implementation available.',
+            $builtin_key,
+            $panel_key));
+      }
+
+      $builtin
+        ->attachPanel($panel)
+        ->attachProfileObject($object)
+        ->setPanelOrder($order);
+
+      $map[$builtin_key] = $builtin;
+
+      $order++;
+    }
+
+    return $map;
+  }
+
+  private function validateNavigationMenuItem($item) {
+    if (!($item instanceof PHUIListItemView)) {
+      throw new Exception(
+        pht(
+          'Expected buildNavigationMenuItems() to return a list of '.
+          'PHUIListItemView objects, but got a surprise.'));
+    }
+  }
+
+}
diff --git a/src/applications/search/interface/PhabricatorProfilePanelInterface.php b/src/applications/search/interface/PhabricatorProfilePanelInterface.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/interface/PhabricatorProfilePanelInterface.php
@@ -0,0 +1,7 @@
+<?php
+
+interface PhabricatorProfilePanelInterface {
+
+  public function getBuiltinProfilePanels();
+
+}
diff --git a/src/applications/search/phidtype/PhabricatorProfilePanelPHIDType.php b/src/applications/search/phidtype/PhabricatorProfilePanelPHIDType.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/phidtype/PhabricatorProfilePanelPHIDType.php
@@ -0,0 +1,40 @@
+<?php
+
+final class PhabricatorProfilePanelPHIDType
+  extends PhabricatorPHIDType {
+
+  const TYPECONST = 'PANL';
+
+  public function getTypeName() {
+    return pht('Profile Panel');
+  }
+
+  public function newObject() {
+    return new PhabricatorProfilePanelConfiguration();
+  }
+
+  public function getPHIDTypeApplicationClass() {
+    return 'PhabricatorSearchApplication';
+  }
+
+  protected function buildQueryForObjects(
+    PhabricatorObjectQuery $object_query,
+    array $phids) {
+    return id(new PhabricatorProfilePanelConfigurationQuery())
+      ->withPHIDs($phids);
+  }
+
+  public function loadHandles(
+    PhabricatorHandleQuery $query,
+    array $handles,
+    array $objects) {
+
+    foreach ($handles as $phid => $handle) {
+      $config = $objects[$phid];
+
+      $handle->setName(pht('Profile Panel'));
+      $handle->setURI($config->getURI());
+    }
+  }
+
+}
diff --git a/src/applications/search/profilepanel/PhabricatorLinkProfilePanel.php b/src/applications/search/profilepanel/PhabricatorLinkProfilePanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/profilepanel/PhabricatorLinkProfilePanel.php
@@ -0,0 +1,27 @@
+<?php
+
+final class PhabricatorLinkProfilePanel
+  extends PhabricatorProfilePanel {
+
+  const PANELKEY = 'link';
+
+  protected function newNavigationMenuItems(
+    PhabricatorProfilePanelConfiguration $config) {
+
+    $icon = $config->getPanelProperty('icon');
+    $name = $config->getPanelProperty('name');
+    $href = $config->getPanelProperty('href');
+
+    $item = id(new PHUIListItemView())
+      ->setRenderNameAsTooltip(true)
+      ->setType(PHUIListItemView::TYPE_ICON_NAV)
+      ->setHref($href)
+      ->setName($name)
+      ->setIcon($icon);
+
+    return array(
+      $item,
+    );
+  }
+
+}
diff --git a/src/applications/search/profilepanel/PhabricatorProfilePanel.php b/src/applications/search/profilepanel/PhabricatorProfilePanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/profilepanel/PhabricatorProfilePanel.php
@@ -0,0 +1,35 @@
+<?php
+
+abstract class PhabricatorProfilePanel extends Phobject {
+
+  private $viewer;
+
+  final public function buildNavigationMenuItems(
+    PhabricatorProfilePanelConfiguration $config) {
+    return $this->newNavigationMenuItems($config);
+  }
+
+  abstract protected function newNavigationMenuItems(
+    PhabricatorProfilePanelConfiguration $config);
+
+  public function setViewer(PhabricatorUser $viewer) {
+    $this->viewer = $viewer;
+    return $this;
+  }
+
+  public function getViewer() {
+    return $this->viewer;
+  }
+
+  final public function getPanelKey() {
+    return $this->getPhobjectClassConstant('PANELKEY');
+  }
+
+  final public static function getAllPanels() {
+    return id(new PhutilClassMapQuery())
+      ->setAncestorClass(__CLASS__)
+      ->setUniqueMethod('getPanelKey')
+      ->execute();
+  }
+
+}
diff --git a/src/applications/search/query/PhabricatorProfilePanelConfigurationQuery.php b/src/applications/search/query/PhabricatorProfilePanelConfigurationQuery.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/query/PhabricatorProfilePanelConfigurationQuery.php
@@ -0,0 +1,64 @@
+<?php
+
+final class PhabricatorProfilePanelConfigurationQuery
+  extends PhabricatorCursorPagedPolicyAwareQuery {
+
+  private $ids;
+  private $phids;
+  private $profileObjectPHIDs;
+
+  public function withIDs(array $ids) {
+    $this->ids = $ids;
+    return $this;
+  }
+
+  public function withPHIDs(array $phids) {
+    $this->phids = $phids;
+    return $this;
+  }
+
+  public function withProfileObjectPHIDs(array $phids) {
+    $this->profileObjectPHIDs = $phids;
+    return $this;
+  }
+
+  public function newResultObject() {
+    return new PhabricatorProfilePanelConfiguration();
+  }
+
+  protected function loadPage() {
+    return $this->loadStandardPage($this->newResultObject());
+  }
+
+  protected function buildWhereClauseParts(AphrontDatabaseConnection $conn) {
+    $where = parent::buildWhereClauseParts($conn);
+
+    if ($this->ids !== null) {
+      $where[] = qsprintf(
+        $conn,
+        'id IN (%Ld)',
+        $this->ids);
+    }
+
+    if ($this->phids !== null) {
+      $where[] = qsprintf(
+        $conn,
+        'phid IN (%Ls)',
+        $this->phids);
+    }
+
+    if ($this->profileObjectPHIDs !== null) {
+      $where[] = qsprintf(
+        $conn,
+        'profileObjectPHID IN (%Ls)',
+        $this->profileObjectPHIDs);
+    }
+
+    return $where;
+  }
+
+  public function getQueryApplicationClass() {
+    return 'PhabricatorSearchApplication';
+  }
+
+}
diff --git a/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php b/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php
@@ -0,0 +1,124 @@
+<?php
+
+final class PhabricatorProfilePanelConfiguration
+  extends PhabricatorSearchDAO
+  implements
+    PhabricatorPolicyInterface,
+    PhabricatorExtendedPolicyInterface {
+
+  protected $profilePHID;
+  protected $panelKey;
+  protected $builtinKey;
+  protected $panelOrder;
+  protected $isDisabled;
+  protected $panelProperties = array();
+
+  private $profileObject = self::ATTACHABLE;
+  private $panel = self::ATTACHABLE;
+
+  public static function initializeNewPanelConfiguration(
+    PhabricatorProfilePanelInterface $profile_object,
+    PhabricatorProfilePanel $panel) {
+
+    return id(new self())
+      ->setProfilePHID($profile_object->getPHID())
+      ->setPanelKey($panel->getPanelKey())
+      ->setIsDisabled(0)
+      ->attachPanel($panel)
+      ->attachProfileObject($profile_object);
+  }
+
+  protected function getConfiguration() {
+    return array(
+      self::CONFIG_AUX_PHID => true,
+      self::CONFIG_SERIALIZATION => array(
+        'panelProperties' => self::SERIALIZATION_JSON,
+      ),
+      self::CONFIG_COLUMN_SCHEMA => array(
+        'panelKey' => 'text64',
+        'builtinKey' => 'text64',
+        'panelOrder' => 'uint32',
+        'isDisabled' => 'bool',
+      ),
+      self::CONFIG_KEY_SCHEMA => array(
+        'key_profile' => array(
+          'columns' => array('profilePHID', 'panelOrder'),
+        ),
+      ),
+    ) + parent::getConfiguration();
+  }
+
+  public function attachPanel(PhabricatorProfilePanel $panel) {
+    $this->panel = $panel;
+    return $this;
+  }
+
+  public function getPanel() {
+    return $this->assertAttached($this->panel);
+  }
+
+  public function attachProfileObject(
+    PhabricatorProfilePanelInterface $profile_object) {
+    $this->profileObject = $profile_object;
+    return $this;
+  }
+
+  public function getProfileObject() {
+    return $this->assertAttached($this->profileObject);
+  }
+
+  public function buildNavigationMenuItems() {
+    return $this->getPanel()->buildNavigationMenuItems($this);
+  }
+
+  public function setPanelProperty($key, $value) {
+    $this->panelProperties[$key] = $value;
+    return $this;
+  }
+
+  public function getPanelProperty($key, $default = null) {
+    return idx($this->panelProperties, $key, $default);
+  }
+
+
+/* -(  PhabricatorPolicyInterface  )----------------------------------------- */
+
+
+  public function getCapabilities() {
+    return array(
+      PhabricatorPolicyCapability::CAN_VIEW,
+      PhabricatorPolicyCapability::CAN_EDIT,
+    );
+  }
+
+
+  public function getPolicy($capability) {
+    return PhabricatorPolicies::getMostOpenPolicy();
+  }
+
+
+  public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
+    return $this->getProfileObject()->hasAutomaticCapability(
+      $capability,
+      $viewer);
+  }
+
+
+  public function describeAutomaticCapability($capability) {
+    return null;
+  }
+
+
+/* -(  PhabricatorExtendedPolicyInterface  )--------------------------------- */
+
+
+  public function getExtendedPolicy($capability, PhabricatorUser $viewer) {
+    return array(
+      array(
+        $this->getProfileObject(),
+        $capability,
+      ),
+    );
+  }
+
+}
diff --git a/src/applications/search/storage/PhabricatorProfilePanelConfigurationTransaction.php b/src/applications/search/storage/PhabricatorProfilePanelConfigurationTransaction.php
new file mode 100644
--- /dev/null
+++ b/src/applications/search/storage/PhabricatorProfilePanelConfigurationTransaction.php
@@ -0,0 +1,18 @@
+<?php
+
+final class PhabricatorProfilePanelConfigurationTransaction
+  extends PhabricatorApplicationTransaction {
+
+  public function getApplicationName() {
+    return 'search';
+  }
+
+  public function getApplicationTransactionType() {
+    return PhabricatorProfilePanelPHIDType::TYPECONST;
+  }
+
+  public function getApplicationTransactionCommentObject() {
+    return null;
+  }
+
+}