diff --git a/SparkleShare/Mac/SparkleAbout.cs b/SparkleShare/Mac/SparkleAbout.cs
new file mode 100644
index 00000000..02260106
--- /dev/null
+++ b/SparkleShare/Mac/SparkleAbout.cs
@@ -0,0 +1,137 @@
+//   SparkleShare, an instant update workflow to Git.
+//   Copyright (C) 2010  Hylke Bons <hylkebons@gmail.com>
+//
+//   This program is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+using System;
+using System.Drawing;
+using System.IO;
+
+using MonoMac.Foundation;
+using MonoMac.AppKit;
+using MonoMac.ObjCRuntime;
+using MonoMac.WebKit;
+
+namespace SparkleShare {
+
+    public class SparkleAbout : NSWindow {
+
+        private NSButton WebsiteButton;
+        private NSButton CreditsButton;
+        private NSBox Box;
+        private NSTextField HeaderTextField;
+        private NSTextField VersionTextField;
+        private NSTextField CreditsTextField;
+
+
+        public SparkleAbout (IntPtr handle) : base (handle) { }
+
+        public SparkleAbout () : base ()
+        {
+
+            SetFrame (new RectangleF (0, 0, 360, 260), true);
+            Center ();
+            
+            StyleMask = (NSWindowStyle.Closable |
+                         NSWindowStyle.Titled);
+
+            MaxSize     = new SizeF (360, 260);
+            MinSize     = new SizeF (360, 260);
+            HasShadow   = true;
+            BackingType = NSBackingStore.Buffered;
+
+            Box = new NSBox () {
+                FillColor = NSColor.White,
+                Frame = new RectangleF (-1, Frame.Height - 105, Frame.Width + 2, 105),
+                BoxType = NSBoxType.NSBoxCustom
+            };
+
+            HeaderTextField = new NSTextField () {
+                StringValue     = "SparkleShare",
+                Frame           = new RectangleF (22, Frame.Height - 89, 318, 48),
+                BackgroundColor = NSColor.White,
+                Bordered        = false,
+                Editable        = false,
+                Font            = NSFontManager.SharedFontManager.FontWithFamily
+                    ("Lucida Grande", NSFontTraitMask.Condensed, 0, 24)
+            };
+
+            VersionTextField = new NSTextField () {
+                StringValue     = "0.2.0",
+                Frame           = new RectangleF (22, Frame.Height - 94, 318, 22),
+                BackgroundColor = NSColor.White,
+                Bordered        = false,
+                Editable        = false,
+                Font            = NSFontManager.SharedFontManager.FontWithFamily
+                    ("Lucida Grande", NSFontTraitMask.Unbold, 0, 11),
+                TextColor       = NSColor.DisabledControlText
+            };
+
+            CreditsTextField = new NSTextField () {
+                StringValue     = @"Copyright © 2010–" + DateTime.Now.Year + " Hylke Bons and others" +
+                                   "\n" +
+                                   "\n" +
+                                   "SparkleShare is Free and Open Source Software. You are free to use, modify, and redistribute it " +
+                                   "under the GNU General Public License version 3 or later.",
+                Frame           = new RectangleF (22, Frame.Height - 222, 318, 98),
+                BackgroundColor = NSColor.WindowBackground,
+                Bordered        = false,
+                Editable        = false,
+                Font            = NSFontManager.SharedFontManager.FontWithFamily
+                    ("Lucida Grande", NSFontTraitMask.Unbold, 0, 11),
+            };
+
+            WebsiteButton = new NSButton () {
+                Frame = new RectangleF (12, 12, 120, 32),
+                Title = "Visit Website",
+                BezelStyle = NSBezelStyle.Rounded,
+                Font = SparkleUI.Font
+            };
+
+            WebsiteButton.Activated += delegate {
+
+                NSUrl url = new NSUrl ("http://www.sparkleshare.org/");
+                NSWorkspace.SharedWorkspace.OpenUrl (url);
+
+            };
+
+            CreditsButton = new NSButton () {
+                Frame = new RectangleF (Frame.Width - 12 - 120, 12, 120, 32),
+                Title = "Show Credits",
+                BezelStyle = NSBezelStyle.Rounded,
+                Font = SparkleUI.Font
+            };
+
+            CreditsButton.Activated += delegate {
+
+                NSUrl url = new NSUrl ("http://www.sparkleshare.org/credits/");
+                NSWorkspace.SharedWorkspace.OpenUrl (url);
+
+            };
+
+            ContentView.AddSubview (Box);
+            ContentView.AddSubview (HeaderTextField);
+            ContentView.AddSubview (VersionTextField);
+            ContentView.AddSubview (CreditsTextField);
+            ContentView.AddSubview (CreditsButton);
+            ContentView.AddSubview (WebsiteButton);
+
+            MakeKeyAndOrderFront (this);
+
+        }
+
+    }
+
+}