Simple, modern & fast web-based email client
TuxWordSmith uses XDXF dictionaries to play in 88 languages
Web-based HTML5 Media Player
BLACK use peer-to-peer technology to operate with no central authority
Contao Open Source CMS (fka TYPOlight)
Web-based HTML5 Photo Viewer
HTLS is an Hattrick live match viewer, based on the old Livefox.
The leading Open Source survey tool
Notepad++ project is moving to GitHub:
An OpenSource (C# .NET) TeamPlay Environment.
PXell - Online project management.
Free and open source webmail software
The Koozali SME Server is a simple and robust server gateway for SOHO