Kurisu OS 3.0
The leading Open Source survey tool
a simple WPF player
A simple calculator using C#
Notepad++ project is moving to GitHub:
Open Source photo Library Software
Free and open source webmail software
TuxWordSmith uses XDXF dictionaries to play in 88 languages
A media player software and entertainment system application framework
php forum, php forum script, forum software, bbs - by XMB Forum
eyeOS first versions published as Open Source.
2d game, creative, surival,