Feature complete address book written in PHP for your personal website
php forum, php forum script, forum software, bbs - by XMB Forum
Contao Open Source CMS (fka TYPOlight)
An OpenSource (C# .NET) TeamPlay Environment.
Open Source photo Library Software
Free and open source webmail software
Create and edit SVG graphics directly in ownCloud. Based on svg-edit.
eyeOS first versions published as Open Source.