diff --git a/apps/common/main/lib/controller/Comments.js b/apps/common/main/lib/controller/Comments.js
index 89cba715a..a93ccca3c 100644
--- a/apps/common/main/lib/controller/Comments.js
+++ b/apps/common/main/lib/controller/Comments.js
@@ -210,19 +210,24 @@ define([
             if (this.collection) {
                 var sort = (type !== undefined);
                 if (type === undefined) {
-                    type = Common.localStorage.getItem(this.appPrefix + "comments-sort") || 'date';
+                    type = Common.localStorage.getItem(this.appPrefix + "comments-sort") || 'date-desc';
                 }
                 Common.localStorage.setItem(this.appPrefix + "comments-sort", type);
                 Common.Utils.InternalSettings.set(this.appPrefix + "comments-sort", type);
 
                 if (type=='position') {
-                } else if (type=='author') {
-                    this.collection.comparator = function (collection) {
-                        return collection.get('parsedName').toLowerCase();
+                } else if (type=='author-asc' || type=='author-desc') {
+                    var direction = (type=='author-asc') ? 1 : -1;
+                    this.collection.comparator = function(item1, item2) {
+                        var n1 = item1.get('parsedName').toLowerCase(),
+                            n2 = item2.get('parsedName').toLowerCase();
+                        if (n1==n2) return 0;
+                        return (n1<n2) ? -direction : direction;
                     };
                 } else { // date
+                    var direction = (type=='date-asc') ? 1 : -1;
                     this.collection.comparator = function (collection) {
-                        return -collection.get('time');
+                        return direction * collection.get('time');
                     };
                 }
                 sort && this.updateComments(true);
@@ -805,7 +810,7 @@ define([
                        ((data.asc_getTime() == '') ? new Date() : new Date(this.stringUtcToLocalDate(data.asc_getTime())));
 
                 var user = this.userCollection.findOriginalUser(data.asc_getUserId());
-                var needSort = (this.getComparator() == 'author') && (data.asc_getUserName() !== comment.get('username'));
+                var needSort = (this.getComparator() == 'author-asc' || this.getComparator() == 'author-desc') && (data.asc_getUserName() !== comment.get('username'));
                 comment.set('comment',  data.asc_getText());
                 comment.set('userid',   data.asc_getUserId());
                 comment.set('username', data.asc_getUserName());
diff --git a/apps/common/main/lib/view/Comments.js b/apps/common/main/lib/view/Comments.js
index ae3f92bf7..ef7c07137 100644
--- a/apps/common/main/lib/view/Comments.js
+++ b/apps/common/main/lib/view/Comments.js
@@ -342,17 +342,31 @@ define([
                             //     toggleGroup: 'sortcomments'
                             // },
                             {
-                                caption: this.mniAuthor,
-                                value: 'author',
+                                caption: this.mniDateDesc,
+                                value: 'date-desc',
                                 checkable: true,
-                                checked: Common.localStorage.getItem(this.appPrefix + "comments-sort") === 'author',
+                                checked: (Common.localStorage.getItem(this.appPrefix + "comments-sort") || 'date-desc') === 'date-desc',
                                 toggleGroup: 'sortcomments'
                             },
                             {
-                                caption: this.mniDate,
-                                value: 'date',
+                                caption: this.mniDateAsc,
+                                value: 'date-asc',
                                 checkable: true,
-                                checked: (Common.localStorage.getItem(this.appPrefix + "comments-sort") || 'date') === 'date',
+                                checked: (Common.localStorage.getItem(this.appPrefix + "comments-sort") || 'date-desc') === 'date-asc',
+                                toggleGroup: 'sortcomments'
+                            },
+                            {
+                                caption: this.mniAuthorAsc,
+                                value: 'author-asc',
+                                checkable: true,
+                                checked: Common.localStorage.getItem(this.appPrefix + "comments-sort") === 'author-asc',
+                                toggleGroup: 'sortcomments'
+                            },
+                            {
+                                caption: this.mniAuthorDesc,
+                                value: 'author-desc',
+                                checkable: true,
+                                checked: Common.localStorage.getItem(this.appPrefix + "comments-sort") === 'author-desc',
                                 toggleGroup: 'sortcomments'
                             }
                         ]
@@ -805,8 +819,10 @@ define([
         textHintAddComment      : 'Add Comment',
         textSort: 'Sort comments',
         mniPosition: 'Sort by Position',
-        mniAuthor: 'Sort by Authors',
-        mniDate: 'Sort by Date',
+        mniAuthorAsc: 'Sort by Author A to Z',
+        mniAuthorDesc: 'Sort by Author Z to A',
+        mniDateDesc: 'Sort by Newest',
+        mniDateAsc: 'Sort by Oldest',
         textClosePanel: 'Close comments'
     }, Common.Views.Comments || {}))
 });
\ No newline at end of file
diff --git a/apps/documenteditor/main/locale/en.json b/apps/documenteditor/main/locale/en.json
index d0ce649a5..d32ddc500 100644
--- a/apps/documenteditor/main/locale/en.json
+++ b/apps/documenteditor/main/locale/en.json
@@ -248,8 +248,10 @@
   "Common.Views.Comments.textResolved": "Resolved",
   "Common.Views.Comments.textSort": "Sort comments",
   "Common.Views.Comments.mniPosition": "Sort by Position",
-  "Common.Views.Comments.mniAuthor": "Sort by Authors",
-  "Common.Views.Comments.mniDate": "Sort by Date",
+  "Common.Views.Comments.mniAuthorAsc": "Sort by Author A to Z",
+  "Common.Views.Comments.mniAuthorDesc": "Sort by Author Z to A",
+  "Common.Views.Comments.mniDateDesc": "Sort by Newest",
+  "Common.Views.Comments.mniDateAsc": "Sort by Oldest",
   "Common.Views.Comments.textClosePanel": "Close comments",
   "Common.Views.CopyWarningDialog.textDontShow": "Don't show this message again",
   "Common.Views.CopyWarningDialog.textMsg": "Copy, cut and paste actions using the editor toolbar buttons and context menu actions will be performed within this editor tab only.<br><br>To copy or paste to or from applications outside the editor tab use the following keyboard combinations:",
diff --git a/apps/presentationeditor/main/locale/en.json b/apps/presentationeditor/main/locale/en.json
index 4129c9812..29eb081a2 100644
--- a/apps/presentationeditor/main/locale/en.json
+++ b/apps/presentationeditor/main/locale/en.json
@@ -141,8 +141,10 @@
   "Common.Views.Comments.textResolved": "Resolved",
   "Common.Views.Comments.textSort": "Sort comments",
   "Common.Views.Comments.mniPosition": "Sort by Position",
-  "Common.Views.Comments.mniAuthor": "Sort by Authors",
-  "Common.Views.Comments.mniDate": "Sort by Date",
+  "Common.Views.Comments.mniAuthorAsc": "Sort by Author A to Z",
+  "Common.Views.Comments.mniAuthorDesc": "Sort by Author Z to A",
+  "Common.Views.Comments.mniDateDesc": "Sort by Newest",
+  "Common.Views.Comments.mniDateAsc": "Sort by Oldest",
   "Common.Views.Comments.textClosePanel": "Close comments",
   "Common.Views.CopyWarningDialog.textDontShow": "Don't show this message again",
   "Common.Views.CopyWarningDialog.textMsg": "Copy, cut and paste actions using the editor toolbar buttons and context menu actions will be performed within this editor tab only.<br><br>To copy or paste to or from applications outside the editor tab use the following keyboard combinations:",
diff --git a/apps/spreadsheeteditor/main/locale/en.json b/apps/spreadsheeteditor/main/locale/en.json
index e0bcb8240..6a72a95fc 100644
--- a/apps/spreadsheeteditor/main/locale/en.json
+++ b/apps/spreadsheeteditor/main/locale/en.json
@@ -189,8 +189,10 @@
   "Common.Views.Comments.textResolved": "Resolved",
   "Common.Views.Comments.textSort": "Sort comments",
   "Common.Views.Comments.mniPosition": "Sort by Position",
-  "Common.Views.Comments.mniAuthor": "Sort by Authors",
-  "Common.Views.Comments.mniDate": "Sort by Date",
+  "Common.Views.Comments.mniAuthorAsc": "Sort by Author A to Z",
+  "Common.Views.Comments.mniAuthorDesc": "Sort by Author Z to A",
+  "Common.Views.Comments.mniDateDesc": "Sort by Newest",
+  "Common.Views.Comments.mniDateAsc": "Sort by Oldest",
   "Common.Views.Comments.textClosePanel": "Close comments",
   "Common.Views.CopyWarningDialog.textDontShow": "Don't show this message again",
   "Common.Views.CopyWarningDialog.textMsg": "Copy, cut and paste actions using the editor toolbar buttons and context menu actions will be performed within this editor tab only.<br><br>To copy or paste to or from applications outside the editor tab use the following keyboard combinations:",