diff --git a/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php b/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
--- a/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
+++ b/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
@@ -11,8 +11,18 @@
     $request = $this->getRequest();
     $viewer = $request->getUser();
     $query = $request->getStr('q');
+    $offset = $request->getInt('offset');
+    $select_phid = null;
     $is_browse = ($request->getURIData('action') == 'browse');
 
+    $select = $request->getStr('select');
+    if ($select) {
+      $select = phutil_json_decode($select);
+      $query = idx($select, 'q');
+      $offset = idx($select, 'offset');
+      $select_phid = idx($select, 'phid');
+    }
+
     // Default this to the query string to make debugging a little bit easier.
     $raw_query = nonempty($request->getStr('raw'), $query);
 
@@ -46,7 +56,6 @@
         }
 
         $limit = 10;
-        $offset = $request->getInt('offset');
 
         if (($offset + $limit) >= $hard_limit) {
           // Offset-based paging is intrinsically slow; hard-cap how far we're
@@ -62,13 +71,43 @@
       $results = $composite->loadResults();
 
       if ($is_browse) {
-        $next_link = null;
+        // If this is a request for a specific token after the user clicks
+        // "Select", return the token in wire format so it can be added to
+        // the tokenizer.
+        if ($select_phid) {
+          $map = mpull($results, null, 'getPHID');
+          $token = idx($map, $select_phid);
+          if (!$token) {
+            return new Aphront404Response();
+          }
+
+          $payload = array(
+            'key' => $token->getPHID(),
+            'token' => $token->getWireFormat(),
+          );
 
+          return id(new AphrontAjaxResponse())->setContent($payload);
+        }
+
+        $format = $request->getStr('format');
+        switch ($format) {
+          case 'html':
+          case 'dialog':
+            // These are the acceptable response formats.
+            break;
+          default:
+            // Return a dialog if format information is missing or invalid.
+            $format = 'dialog';
+            break;
+        }
+
+        $next_link = null;
         if (count($results) > $limit) {
           $results = array_slice($results, 0, $limit, $preserve_keys = true);
           if (($offset + (2 * $limit)) < $hard_limit) {
             $next_uri = id(new PhutilURI($request->getRequestURI()))
-              ->setQueryParam('offset', $offset + $limit);
+              ->setQueryParam('offset', $offset + $limit)
+              ->setQueryParam('format', 'html');
 
             $next_link = javelin_tag(
               'a',
@@ -91,16 +130,44 @@
           }
         }
 
+        $exclude = $request->getStrList('exclude');
+        $exclude = array_fuse($exclude);
+
+        $select = array(
+          'offset' => $offset,
+          'q' => $query,
+        );
+
         $items = array();
         foreach ($results as $result) {
           $token = PhabricatorTypeaheadTokenView::newForTypeaheadResult(
             $result);
+
+          // Disable already-selected tokens.
+          $disabled = isset($exclude[$result->getPHID()]);
+
+          $value = $select + array('phid' => $result->getPHID());
+          $value = json_encode($value);
+
+          $button = phutil_tag(
+            'button',
+            array(
+              'class' => 'small grey',
+              'name' => 'select',
+              'value' => $value,
+              'disabled' => $disabled ? 'disabled' : null,
+            ),
+            pht('Select'));
+
           $items[] = phutil_tag(
             'div',
             array(
-              'class' => 'grouped',
+              'class' => 'typeahead-browse-item grouped',
             ),
-            $token);
+            array(
+              $token,
+              $button,
+            ));
         }
 
         $markup = array(
@@ -108,7 +175,7 @@
           $next_link,
         );
 
-        if ($request->isAjax()) {
+        if ($format == 'html') {
           $content = array(
             'markup' => hsprintf('%s', $markup),
           );
diff --git a/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php b/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php
--- a/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php
+++ b/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php
@@ -73,6 +73,16 @@
     return (string)$uri;
   }
 
+  public function getBrowseURI() {
+    if (!$this->isBrowsable()) {
+      return null;
+    }
+
+    $uri = new PhutilURI('/typeahead/browse/'.get_class($this).'/');
+    $uri->setQueryParams($this->parameters);
+    return (string)$uri;
+  }
+
   abstract public function getPlaceholderText();
   abstract public function getDatasourceApplicationClass();
   abstract public function loadResults();
diff --git a/src/view/control/AphrontTokenizerTemplateView.php b/src/view/control/AphrontTokenizerTemplateView.php
--- a/src/view/control/AphrontTokenizerTemplateView.php
+++ b/src/view/control/AphrontTokenizerTemplateView.php
@@ -5,6 +5,12 @@
   private $value;
   private $name;
   private $id;
+  private $browseURI;
+
+  public function setBrowseURI($browse_uri) {
+    $this->browseURI = $browse_uri;
+    return $this;
+  }
 
   public function setID($id) {
     $this->id = $id;
@@ -61,13 +67,57 @@
     $content[] = $input;
     $content[] = phutil_tag('div', array('style' => 'clear: both;'), '');
 
-    return phutil_tag(
+    $container = phutil_tag(
       'div',
       array(
         'id' => $id,
         'class' => 'jx-tokenizer-container',
       ),
       $content);
+
+    $browse = null;
+    if ($this->browseURI) {
+      $icon = id(new PHUIIconView())
+        ->setIconFont('fa-list-ul');
+
+      // TODO: This thing is ugly and the ugliness is not intentional.
+      // We have to give it text or PHUIButtonView collapses. It should likely
+      // just be an icon and look more integrated into the input.
+      $browse = id(new PHUIButtonView())
+        ->setTag('a')
+        ->setIcon($icon)
+        ->addSigil('tokenizer-browse')
+        ->setColor(PHUIButtonView::GREY)
+        ->setSize(PHUIButtonView::SMALL)
+        ->setText(pht('Browse...'));
+    }
+
+    $frame = javelin_tag(
+      'table',
+      array(
+        'class' => 'jx-tokenizer-frame',
+        'sigil' => 'tokenizer-frame',
+      ),
+      phutil_tag(
+        'tr',
+        array(
+        ),
+        array(
+          phutil_tag(
+            'td',
+            array(
+              'class' => 'jx-tokenizer-frame-input',
+            ),
+            $container),
+          phutil_tag(
+            'td',
+            array(
+              'class' => 'jx-tokenizer-frame-browse',
+            ),
+            $browse),
+        )));
+
+    return $frame;
   }
 
   private function renderToken($key, $value, $icon) {
diff --git a/src/view/form/control/AphrontFormTokenizerControl.php b/src/view/form/control/AphrontFormTokenizerControl.php
--- a/src/view/form/control/AphrontFormTokenizerControl.php
+++ b/src/view/form/control/AphrontFormTokenizerControl.php
@@ -70,8 +70,18 @@
     }
 
     $datasource_uri = null;
-    if ($this->datasource) {
-      $datasource_uri = $this->datasource->getDatasourceURI();
+    $browse_uri = null;
+
+    $datasource = $this->datasource;
+    if ($datasource) {
+      $datasource->setViewer($this->getUser());
+
+      $datasource_uri = $datasource->getDatasourceURI();
+
+      $browse_uri = $datasource->getBrowseURI();
+      if ($browse_uri) {
+        $template->setBrowseURI($browse_uri);
+      }
     }
 
     if (!$this->disableBehavior) {
@@ -83,6 +93,7 @@
         'limit'       => $this->limit,
         'username'    => $username,
         'placeholder' => $placeholder,
+        'browseURI' => $browse_uri,
       ));
     }
 
diff --git a/webroot/rsrc/css/aphront/tokenizer.css b/webroot/rsrc/css/aphront/tokenizer.css
--- a/webroot/rsrc/css/aphront/tokenizer.css
+++ b/webroot/rsrc/css/aphront/tokenizer.css
@@ -104,3 +104,17 @@
 .tokenizer-closed {
   margin-top: 2px;
 }
+
+.jx-tokenizer-frame {
+  width: 100%;
+}
+
+.jx-tokenizer-frame-input {
+  width: 100%;
+}
+
+.jx-tokenizer-frame-browse {
+  width: 100px;
+  vertical-align: middle;
+  padding: 0 0 0 4px;
+}
diff --git a/webroot/rsrc/css/aphront/typeahead-browse.css b/webroot/rsrc/css/aphront/typeahead-browse.css
--- a/webroot/rsrc/css/aphront/typeahead-browse.css
+++ b/webroot/rsrc/css/aphront/typeahead-browse.css
@@ -45,3 +45,16 @@
   margin: 0;
   width: 100%;
 }
+
+.typeahead-browse-item {
+  padding: 2px 0;
+}
+
+.typeahead-browse-item + .typeahead-browse-item {
+  border-top: 1px solid {$thinblueborder};
+}
+
+.typeahead-browse-item button {
+  float: right;
+  margin: 2px 4px;
+}
diff --git a/webroot/rsrc/externals/javelin/lib/control/tokenizer/Tokenizer.js b/webroot/rsrc/externals/javelin/lib/control/tokenizer/Tokenizer.js
--- a/webroot/rsrc/externals/javelin/lib/control/tokenizer/Tokenizer.js
+++ b/webroot/rsrc/externals/javelin/lib/control/tokenizer/Tokenizer.js
@@ -45,12 +45,14 @@
 
   properties : {
     limit : null,
-    renderTokenCallback : null
+    renderTokenCallback : null,
+    browseURI: null
   },
 
   members : {
     _containerNode : null,
     _root : null,
+    _frame: null,
     _focus : null,
     _orig : null,
     _typeahead : null,
@@ -76,6 +78,20 @@
       this._tokens = [];
       this._tokenMap = {};
 
+      try {
+        this._frame = JX.DOM.findAbove(this._orig, 'table', 'tokenizer-frame');
+      } catch (e) {
+        // Ignore, this tokenizer doesn't have a frame.
+      }
+
+      if (this._frame) {
+        JX.DOM.listen(
+          this._frame,
+          'click',
+          'tokenizer-browse',
+          JX.bind(this, this._onbrowse));
+      }
+
       var focus = this.buildInput(this._orig.value);
       this._focus = focus;
 
@@ -429,6 +445,24 @@
         false);
       this._focus.value = '';
       this._redraw();
+    },
+
+    _onbrowse: function(e) {
+      e.kill();
+
+      var uri = this.getBrowseURI();
+      if (!uri) {
+        return;
+      }
+
+      new JX.Workflow(uri, {exclude: JX.keys(this.getTokens()).join(',')})
+        .setHandler(
+          JX.bind(this, function(r) {
+            this._typeahead.getDatasource().addResult(r.token);
+            this.addToken(r.key);
+            this.focus();
+          }))
+        .start();
     }
 
   }
diff --git a/webroot/rsrc/js/application/typeahead/behavior-typeahead-search.js b/webroot/rsrc/js/application/typeahead/behavior-typeahead-search.js
--- a/webroot/rsrc/js/application/typeahead/behavior-typeahead-search.js
+++ b/webroot/rsrc/js/application/typeahead/behavior-typeahead-search.js
@@ -31,7 +31,7 @@
     }
 
     JX.DOM.alterClass(frame, 'loading', true);
-    new JX.Workflow(config.uri, {q: value})
+    new JX.Workflow(config.uri, {q: value, format: 'html'})
       .setHandler(function(r) {
         if (value != input.value) {
           // The user typed some more stuff while the request was in flight,
diff --git a/webroot/rsrc/js/core/Prefab.js b/webroot/rsrc/js/core/Prefab.js
--- a/webroot/rsrc/js/core/Prefab.js
+++ b/webroot/rsrc/js/core/Prefab.js
@@ -194,6 +194,10 @@
         tokenizer.setInitialValue(config.value);
       }
 
+      if (config.browseURI) {
+        tokenizer.setBrowseURI(config.browseURI);
+      }
+
       JX.Stratcom.addData(root, {'tokenizer' : tokenizer});
 
       return {