Witty is a open source twitter client for Windows powered by the WPF.

Witty includes the following functionalities:
1. View recent Twitter statuses from the people you follow (auto-refreshing)
2. View recent replies to you
3. View a specific user's timeline
4. Update your twitter status
5. View and respond to Direct Messages
6. Links will open in the user's default browser

Code Specific Witty Features
1. Minimize to the System Tray
2. Runs in Single Instance mode
3. Remembers the window settings for location and size
4. Responsive UI with asynchronous calls to Twitter to prevent UI thread from locking
5. Custom Styles and Resources
6. Custom TwitterLib for encapsulating calls to Twitter
7. Serialize to disk as XAML
8. Make use of Kevin Moore's FlipTile3D (easter egg)
9. Spell Checking
10. New messages are displayed with yellow fade technique
11. Option for always on top (Right-click the Witty Header)
12. Save and store application settings
13. Skins and Skinning

Requirements:
* .NET Framework

The license of this software is Free, you can free download and free use this social networking software.