diff --git a/editors/ckeditor.inc b/editors/ckeditor.inc
index fcf168ec311e4a5b98e4938b62be652b061ffdec..86f3c052df50434eab46dc01ca74168ac9607062 100644
--- a/editors/ckeditor.inc
+++ b/editors/ckeditor.inc
@@ -78,7 +78,8 @@ function wysiwyg_ckeditor_version($editor) {
     // version:'CKEditor 3.0 SVN',revision:'3665'
     // version:'3.0 RC',revision:'3753'
     // version:'3.0.1',revision:'4391'
-    if (preg_match('@version:\'(?:CKEditor )?([\d\.]+)(?:.+revision:\'([\d]+))?@', $line, $version)) {
+    // version:"4.0",revision:"769d96134b"
+    if (preg_match('@version:[\'"](?:CKEditor )?([\d\.]+)(?:.+revision:[\'"]([[:xdigit:]]+))?@', $line, $version)) {
       fclose($library);
       // Version numbers need to have three parts since 3.0.1.
       $version[1] = preg_replace('/^(\d+)\.(\d+)$/', '${1}.${2}.0', $version[1]);
@@ -286,7 +287,7 @@ function wysiwyg_ckeditor_settings($editor, $config, $theme) {
           }
           // Add buttons.
           if ($type == 'buttons') {
-            $settings['toolbar'][] = $button;
+            $settings['toolbar'][wysiwyg_ckeditor_group($button)][] = $button;
           }
           // Add external Drupal plugins to the list of extensions.
           if ($type == 'buttons' && !empty($plugins[$plugin]['proxy'])) {
@@ -315,8 +316,17 @@ function wysiwyg_ckeditor_settings($editor, $config, $theme) {
       $settings['extraPlugins'] = implode(',', $extra_plugins);
     }
   }
-  // For now, all buttons are placed into one row.
-  $settings['toolbar'] = array($settings['toolbar']);
+
+  // Organize groups to use lables to improves accesibility
+  // http://docs.ckeditor.com/#!/guide/dev_toolbar-section-3.
+  $groups_toolbar = array();
+  foreach ($settings['toolbar'] as $group => $items) {
+    $groups_toolbar[] = array(
+      'name' => $group,
+      'items' => $items,
+    );
+  }
+  $settings['toolbar'] = $groups_toolbar;
 
   return $settings;
 }
@@ -462,3 +472,94 @@ function wysiwyg_ckeditor_plugins($editor) {
   return $plugins;
 }
 
+/**
+ * Define grouping for ckEditor buttons.
+ */
+function wysiwyg_ckeditor_group($button) {
+  switch ($button) {
+    case 'Source':
+      $group = 'document';
+      break;
+
+    case 'Cut':
+    case 'Copy':
+    case 'Paste':
+    case 'PasteText':
+    case 'PasteFromWord':
+    case 'Undo':
+    case 'Redo':
+      $group = 'clipboard';
+      break;
+
+    case 'Find':
+    case 'Replace':
+    case 'SelectAll':
+    case 'SpellChecker':
+    case 'Scayt':
+      $group = 'editing';
+      break;
+
+    case 'Bold':
+    case 'Italic':
+    case 'Underline':
+    case 'Strike':
+    case 'Subscript':
+    case 'Superscript':
+    case 'RemoveFormat':
+      $group = 'basicstyles';
+      break;
+
+    case 'NumberedList':
+    case 'BulletedList':
+    case 'Outdent':
+    case 'Indent':
+    case 'Blockquote':
+    case 'CreateDiv':
+    case 'JustifyLeft':
+    case 'JustifyCenter':
+    case 'JustifyRight':
+    case 'JustifyBlock':
+    case 'BidiLtr':
+    case 'BidiRtl':
+      $group = 'paragraph';
+      break;
+
+    case 'Link':
+    case 'Unlink':
+    case 'Anchor':
+      $group = 'links';
+      break;
+
+    case 'Image':
+    case 'Flash':
+    case 'Table':
+    case 'HorizontalRule':
+    case 'Smiley':
+    case 'SpecialChar':
+    case 'Iframe':
+      $group = 'insert';
+      break;
+
+    case 'Styles':
+    case 'Format':
+    case 'Font':
+    case 'FontSize':
+      $group = 'styles';
+      break;
+
+    case 'TextColor':
+    case 'BGColor':
+      $group = 'colors';
+      break;
+
+    case 'Maximize':
+    case 'ShowBlocks':
+    case 'About':
+      $group = 'tools';
+      break;
+
+    default:
+      $group = 'other';
+  }
+  return $group;
+}