diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 17b1e837a6..b21f29d1b4 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1802,6 +1802,7 @@ phutil_register_library_map(array(
     'ManiphestEditConduitAPIMethod' => 'applications/maniphest/conduit/ManiphestEditConduitAPIMethod.php',
     'ManiphestEditEngine' => 'applications/maniphest/editor/ManiphestEditEngine.php',
     'ManiphestEmailCommand' => 'applications/maniphest/command/ManiphestEmailCommand.php',
+    'ManiphestFlagCustomField' => 'applications/maniphest/field/ManiphestFlagCustomField.php',
     'ManiphestGetTaskTransactionsConduitAPIMethod' => 'applications/maniphest/conduit/ManiphestGetTaskTransactionsConduitAPIMethod.php',
     'ManiphestHovercardEngineExtension' => 'applications/maniphest/engineextension/ManiphestHovercardEngineExtension.php',
     'ManiphestInfoConduitAPIMethod' => 'applications/maniphest/conduit/ManiphestInfoConduitAPIMethod.php',
@@ -5388,6 +5389,8 @@ phutil_register_library_map(array(
     'PholioTransactionView' => 'applications/pholio/view/PholioTransactionView.php',
     'PholioUploadedImageView' => 'applications/pholio/view/PholioUploadedImageView.php',
     'PhorgeCodeWarningSetupCheck' => 'applications/config/check/PhorgeCodeWarningSetupCheck.php',
+    'PhorgeFlagFlaggedObjectCustomField' => 'applications/flag/customfield/PhorgeFlagFlaggedObjectCustomField.php',
+    'PhorgeFlagFlaggedObjectFieldStorage' => 'applications/flag/customfield/PhorgeFlagFlaggedObjectFieldStorage.php',
     'PhorgeSystemDeprecationWarningListener' => 'applications/system/events/PhorgeSystemDeprecationWarningListener.php',
     'PhortuneAccount' => 'applications/phortune/storage/PhortuneAccount.php',
     'PhortuneAccountAddManagerController' => 'applications/phortune/controller/account/PhortuneAccountAddManagerController.php',
@@ -8008,6 +8011,7 @@ phutil_register_library_map(array(
     'ManiphestEditConduitAPIMethod' => 'PhabricatorEditEngineAPIMethod',
     'ManiphestEditEngine' => 'PhabricatorEditEngine',
     'ManiphestEmailCommand' => 'MetaMTAEmailTransactionCommand',
+    'ManiphestFlagCustomField' => 'ManiphestCustomField',
     'ManiphestGetTaskTransactionsConduitAPIMethod' => 'ManiphestConduitAPIMethod',
     'ManiphestHovercardEngineExtension' => 'PhabricatorHovercardEngineExtension',
     'ManiphestInfoConduitAPIMethod' => 'ManiphestConduitAPIMethod',
@@ -12212,6 +12216,8 @@ phutil_register_library_map(array(
     'PholioTransactionView' => 'PhabricatorApplicationTransactionView',
     'PholioUploadedImageView' => 'AphrontView',
     'PhorgeCodeWarningSetupCheck' => 'PhabricatorSetupCheck',
+    'PhorgeFlagFlaggedObjectCustomField' => 'PhabricatorCustomField',
+    'PhorgeFlagFlaggedObjectFieldStorage' => 'Phobject',
     'PhorgeSystemDeprecationWarningListener' => 'PhabricatorEventListener',
     'PhortuneAccount' => array(
       'PhortuneDAO',
diff --git a/src/applications/differential/customfield/DifferentialRepositoryField.php b/src/applications/differential/customfield/DifferentialRepositoryField.php
index 1d403d160a..9cdc29fcb3 100644
--- a/src/applications/differential/customfield/DifferentialRepositoryField.php
+++ b/src/applications/differential/customfield/DifferentialRepositoryField.php
@@ -63,4 +63,16 @@ final class DifferentialRepositoryField
       $repository->getMonogram().' '.$repository->getName());
   }
 
+  public function shouldAppearInListView() {
+    return true;
+  }
+
+  public function renderOnListItem(PHUIObjectItemView $view) {
+    if ($this->getValue()) {
+      $handle = $this->getViewer()->renderHandle($this->getValue());
+      $view->addByLine(pht('Repository: %s', $handle));
+    }
+  }
+
+
 }
diff --git a/src/applications/differential/query/DifferentialRevisionSearchEngine.php b/src/applications/differential/query/DifferentialRevisionSearchEngine.php
index b69b764bb8..9e18ba8e24 100644
--- a/src/applications/differential/query/DifferentialRevisionSearchEngine.php
+++ b/src/applications/differential/query/DifferentialRevisionSearchEngine.php
@@ -199,6 +199,10 @@ final class DifferentialRevisionSearchEngine
 
     $unlanded = $this->loadUnlandedDependencies($revisions);
 
+    $custom_field_lists = $this->loadCustomFields(
+      $revisions,
+      PhabricatorCustomField::ROLE_LIST);
+
     $views = array();
     if ($bucket) {
       $bucket->setViewer($viewer);
@@ -231,6 +235,7 @@ final class DifferentialRevisionSearchEngine
 
     foreach ($views as $view) {
       $view->setUnlandedDependencies($unlanded);
+      $view->setCustomFieldLists($custom_field_lists);
     }
 
     if (count($views) == 1) {
diff --git a/src/applications/differential/view/DifferentialRevisionListView.php b/src/applications/differential/view/DifferentialRevisionListView.php
index ab0abcc386..018f640c6c 100644
--- a/src/applications/differential/view/DifferentialRevisionListView.php
+++ b/src/applications/differential/view/DifferentialRevisionListView.php
@@ -11,6 +11,7 @@ final class DifferentialRevisionListView extends AphrontView {
   private $noBox;
   private $background = null;
   private $unlandedDependencies = array();
+  private $customFieldLists = array();
 
   public function setUnlandedDependencies(array $unlanded_dependencies) {
     $this->unlandedDependencies = $unlanded_dependencies;
@@ -47,6 +48,11 @@ final class DifferentialRevisionListView extends AphrontView {
     return $this;
   }
 
+  public function setCustomFieldLists(array $lists) {
+    $this->customFieldLists = $lists;
+    return $this;
+  }
+
   public function render() {
     $viewer = $this->getViewer();
 
@@ -181,6 +187,12 @@ final class DifferentialRevisionListView extends AphrontView {
         "{$icon} {$color}",
         $revision->getStatusDisplayName());
 
+      $field_list = idx($this->customFieldLists, $revision->getPHID());
+      if ($field_list) {
+        $field_list
+          ->addFieldsToListViewItem($revision, $viewer, $item);
+      }
+
       $list->addItem($item);
     }
 
diff --git a/src/applications/flag/customfield/PhorgeFlagFlaggedObjectCustomField.php b/src/applications/flag/customfield/PhorgeFlagFlaggedObjectCustomField.php
new file mode 100644
index 0000000000..8d2f358efd
--- /dev/null
+++ b/src/applications/flag/customfield/PhorgeFlagFlaggedObjectCustomField.php
@@ -0,0 +1,46 @@
+<?php
+
+final class PhorgeFlagFlaggedObjectCustomField extends PhabricatorCustomField {
+
+  private $flag;
+
+  public function getFieldKey() {
+    return 'flag:flag';
+  }
+  public function shouldAppearInPropertyView() {
+    return false;
+  }
+
+  public function shouldAppearInListView() {
+    return true;
+  }
+
+  public function renderOnListItem(PHUIObjectItemView $view) {
+    if (!$this->flag) {
+      return;
+    }
+    // I'm very open to improvements in the way a Flag is displayed
+    $icon = PhabricatorFlagColor::getIcon($this->flag->getColor());
+    $view->addIcon($icon);
+  }
+
+
+  public function shouldUseStorage() {
+    return true;
+  }
+
+  public function setValueFromStorage($value) {
+    $this->flag = $value;
+  }
+
+  // The parent function is defined to return a PhabricatorCustomFieldStorage,
+  // but that assumes a DTO with a particular form; That doesn't apply here.
+  // Maybe the function needs to be re-defined with a suitable interface.
+  // For now, PhorgeFlagFlaggedObjectFieldStorage just duck-types into the
+  // right shape.
+  public function newStorageObject() {
+    return id(new PhorgeFlagFlaggedObjectFieldStorage())
+      ->setViewer($this->getViewer());
+  }
+
+}
diff --git a/src/applications/flag/customfield/PhorgeFlagFlaggedObjectFieldStorage.php b/src/applications/flag/customfield/PhorgeFlagFlaggedObjectFieldStorage.php
new file mode 100644
index 0000000000..b8f28a2fac
--- /dev/null
+++ b/src/applications/flag/customfield/PhorgeFlagFlaggedObjectFieldStorage.php
@@ -0,0 +1,36 @@
+<?php
+
+final class PhorgeFlagFlaggedObjectFieldStorage extends Phobject {
+
+  private $viewer;
+
+  public function setViewer(PhabricatorUser $viewer) {
+    $this->viewer = $viewer;
+    return $this;
+  }
+
+  public function getStorageSourceKey() {
+    return 'flags/flag';
+  }
+
+  public function loadStorageSourceData(array $fields) {
+
+    $objects = mpull($fields, 'getObject');
+    $object_phids = mpull($objects, 'getPHID');
+    $flags = (new PhabricatorFlagQuery())
+      ->setViewer($this->viewer)
+      ->withOwnerPHIDs(array($this->viewer->getPHID()))
+      ->withObjectPHIDs($object_phids)
+      ->execute();
+    $flags = mpull($flags, null, 'getObjectPHID');
+
+    $result = array();
+    foreach ($fields as $key => $field) {
+      $target_phid = $field->getObject()->getPHID();
+      $result[$key] = idx($flags, $target_phid);
+    }
+
+    return $result;
+  }
+
+}
diff --git a/src/applications/maniphest/field/ManiphestFlagCustomField.php b/src/applications/maniphest/field/ManiphestFlagCustomField.php
new file mode 100644
index 0000000000..febf0aea8d
--- /dev/null
+++ b/src/applications/maniphest/field/ManiphestFlagCustomField.php
@@ -0,0 +1,18 @@
+<?php
+
+// I'm not sure this is the right use for the Proxy capability.
+// Probably should just use Traits for this.
+final class ManiphestFlagCustomField extends ManiphestCustomField {
+
+  public function __construct() {
+    $this->setProxy(new PhorgeFlagFlaggedObjectCustomField());
+  }
+
+  public function canSetProxy() {
+    return true;
+  }
+
+  public function newStorageObject() {
+    return $this->getProxy()->newStorageObject();
+  }
+}
diff --git a/src/applications/maniphest/query/ManiphestTaskSearchEngine.php b/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
index 4f3e9c0462..541f7f3831 100644
--- a/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
+++ b/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
@@ -374,11 +374,17 @@ final class ManiphestTaskSearchEngine
         ManiphestBulkEditCapability::CAPABILITY);
     }
 
+    $custom_field_lists = $this->loadCustomFields(
+      $tasks,
+      PhabricatorCustomField::ROLE_LIST);
+
     $list = id(new ManiphestTaskResultListView())
       ->setUser($viewer)
       ->setTasks($tasks)
+      ->setHandles($handles)
       ->setSavedQuery($saved)
       ->setCanBatchEdit($can_bulk_edit)
+      ->setCustomFieldLists($custom_field_lists)
       ->setShowBatchControls($this->showBatchControls);
 
     $result = new PhabricatorApplicationSearchResultView();
@@ -387,6 +393,24 @@ final class ManiphestTaskSearchEngine
     return $result;
   }
 
+  protected function getRequiredHandlePHIDsForResultList(
+    array $objects,
+    PhabricatorSavedQuery $query) {
+
+    $phids = array();
+    foreach ($objects as $task) {
+      $assigned_phid = $task->getOwnerPHID();
+      if ($assigned_phid) {
+        $phids[] = $assigned_phid;
+      }
+      foreach ($task->getProjectPHIDs() as $project_phid) {
+        $phids[] = $project_phid;
+      }
+    }
+
+    return $phids;
+  }
+
   protected function willUseSavedQuery(PhabricatorSavedQuery $saved) {
 
     // The 'withUnassigned' parameter may be present in old saved queries from
diff --git a/src/applications/maniphest/view/ManiphestTaskListView.php b/src/applications/maniphest/view/ManiphestTaskListView.php
index f9ad9e6046..d5d3d1e9c5 100644
--- a/src/applications/maniphest/view/ManiphestTaskListView.php
+++ b/src/applications/maniphest/view/ManiphestTaskListView.php
@@ -4,6 +4,7 @@ final class ManiphestTaskListView extends ManiphestView {
 
   private $tasks;
   private $handles;
+  private $customFieldLists = array();
   private $showBatchControls;
   private $noDataString;
 
@@ -19,6 +20,11 @@ final class ManiphestTaskListView extends ManiphestView {
     return $this;
   }
 
+  public function setCustomFieldLists(array $lists) {
+    $this->customFieldLists = $lists;
+    return $this;
+  }
+
   public function setShowBatchControls($show_batch_controls) {
     $this->showBatchControls = $show_batch_controls;
     return $this;
@@ -132,12 +138,21 @@ final class ManiphestTaskListView extends ManiphestView {
             ->setHref($href));
       }
 
+
+      $field_list = idx($this->customFieldLists, $task->getPHID());
+      if ($field_list) {
+        $field_list
+          ->addFieldsToListViewItem($task, $this->getViewer(), $item);
+      }
+
       $list->addItem($item);
     }
 
     return $list;
   }
 
+  // This method should be removed, and all call-sites switch
+  // to use ManiphestSearchEngine
   public static function loadTaskHandles(
     PhabricatorUser $viewer,
     array $tasks) {
diff --git a/src/applications/maniphest/view/ManiphestTaskResultListView.php b/src/applications/maniphest/view/ManiphestTaskResultListView.php
index cc2a135292..6ee2025265 100644
--- a/src/applications/maniphest/view/ManiphestTaskResultListView.php
+++ b/src/applications/maniphest/view/ManiphestTaskResultListView.php
@@ -3,6 +3,8 @@
 final class ManiphestTaskResultListView extends ManiphestView {
 
   private $tasks;
+  private $handles;
+  private $customFieldLists = array();
   private $savedQuery;
   private $canBatchEdit;
   private $showBatchControls;
@@ -17,6 +19,16 @@ final class ManiphestTaskResultListView extends ManiphestView {
     return $this;
   }
 
+  public function setHandles(array $handles) {
+    $this->handles = $handles;
+    return $this;
+  }
+
+  public function setCustomFieldLists(array $lists) {
+    $this->customFieldLists = $lists;
+    return $this;
+  }
+
   public function setCanBatchEdit($can_batch_edit) {
     $this->canBatchEdit = $can_batch_edit;
     return $this;
@@ -42,11 +54,10 @@ final class ManiphestTaskResultListView extends ManiphestView {
     $group_parameter = nonempty($query->getParameter('group'), 'priority');
     $order_parameter = nonempty($query->getParameter('order'), 'priority');
 
-    $handles = ManiphestTaskListView::loadTaskHandles($viewer, $tasks);
     $groups = $this->groupTasks(
       $tasks,
       $group_parameter,
-      $handles);
+      $this->handles);
 
     $result = array();
 
@@ -56,7 +67,8 @@ final class ManiphestTaskResultListView extends ManiphestView {
       $task_list->setShowBatchControls($this->showBatchControls);
       $task_list->setUser($viewer);
       $task_list->setTasks($list);
-      $task_list->setHandles($handles);
+      $task_list->setHandles($this->handles);
+      $task_list->setCustomFieldLists($this->customFieldLists);
 
       $header = id(new PHUIHeaderView())
         ->addSigil('task-group')
diff --git a/src/applications/search/engine/PhabricatorApplicationSearchEngine.php b/src/applications/search/engine/PhabricatorApplicationSearchEngine.php
index cad397b0ac..9094ead227 100644
--- a/src/applications/search/engine/PhabricatorApplicationSearchEngine.php
+++ b/src/applications/search/engine/PhabricatorApplicationSearchEngine.php
@@ -13,6 +13,7 @@
  * @task read       Reading Utilities
  * @task exec       Paging and Executing Queries
  * @task render     Rendering Results
+ * @task custom     Custom Fields
  */
 abstract class PhabricatorApplicationSearchEngine extends Phobject {
 
@@ -1071,7 +1072,7 @@ abstract class PhabricatorApplicationSearchEngine extends Phobject {
     if ($phids) {
       $handles = id(new PhabricatorHandleQuery())
         ->setViewer($this->requireViewer())
-        ->witHPHIDs($phids)
+        ->withPHIDs($phids)
         ->execute();
     } else {
       $handles = array();
@@ -1626,4 +1627,33 @@ abstract class PhabricatorApplicationSearchEngine extends Phobject {
     return $supported;
   }
 
+  /**
+   * Load from object and from storage, and updates Custom Fields instances
+   * that are attached to each object.
+   *
+   * @return map<phid->PhabricatorCustomFieldList> of loaded fields.
+   * @task custom
+   */
+  protected function loadCustomFields(array $objects, $role) {
+    assert_instances_of($objects, 'PhabricatorCustomFieldInterface');
+
+    $query = new PhabricatorCustomFieldStorageQuery();
+    $lists = array();
+
+    foreach ($objects as $object) {
+      $field_list = PhabricatorCustomField::getObjectFields($object, $role);
+      $field_list->readFieldsFromObject($object);
+      foreach ($field_list->getFields() as $field) {
+        // TODO move $viewer into PhabricatorCustomFieldStorageQuery
+        $field->setViewer($this->viewer);
+      }
+      $lists[$object->getPHID()] = $field_list;
+      $query->addFields($field_list->getFields());
+    }
+    // This updates the field_list objects.
+    $query->execute();
+
+    return $lists;
+  }
+
 }
diff --git a/src/infrastructure/customfield/field/PhabricatorCustomField.php b/src/infrastructure/customfield/field/PhabricatorCustomField.php
index 4e55348c36..774dbb6630 100644
--- a/src/infrastructure/customfield/field/PhabricatorCustomField.php
+++ b/src/infrastructure/customfield/field/PhabricatorCustomField.php
@@ -384,6 +384,7 @@ abstract class PhabricatorCustomField extends Phobject {
    *
    * @param PhabricatorCustomField Field implementation.
    * @return this
+   * @task proxy
    */
   final public function setProxy(PhabricatorCustomField $proxy) {
     if (!$this->canSetProxy()) {
@@ -400,12 +401,20 @@ abstract class PhabricatorCustomField extends Phobject {
    * @{method:canSetProxy}.
    *
    * @return PhabricatorCustomField|null  Proxy field, if one is set.
+   * @task proxy
    */
   final public function getProxy() {
     return $this->proxy;
   }
 
-
+  /**
+   * @task proxy
+   */
+  public function __clone() {
+    if ($this->proxy) {
+      $this->proxy = clone $this->proxy;
+    }
+  }
 /* -(  Contextual Data  )---------------------------------------------------- */
 
 
@@ -827,7 +836,7 @@ abstract class PhabricatorCustomField extends Phobject {
 
 
   /**
-   * Appearing in ApplicationTrasactions allows a field to be edited using
+   * Appearing in ApplicationTransactions allows a field to be edited using
    * standard workflows.
    *
    * @return bool True to appear in ApplicationTransactions.
diff --git a/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php b/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php
index 60a5171cdd..369bed2297 100644
--- a/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php
+++ b/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php
@@ -200,6 +200,19 @@ final class PhabricatorCustomFieldList extends Phobject {
     }
   }
 
+  public function addFieldsToListViewItem(
+    PhabricatorCustomFieldInterface $object,
+    PhabricatorUser $viewer,
+    PHUIObjectItemView $view) {
+
+    foreach ($this->fields as $field) {
+      if ($field->shouldAppearInListView()) {
+        $field->setViewer($viewer);
+        $field->renderOnListItem($view);
+      }
+    }
+  }
+
   public function buildFieldTransactionsFromRequest(
     PhabricatorApplicationTransaction $template,
     AphrontRequest $request) {