PHProjekt : PHProjekt is a modular application for the coordination of group activities and to share informations and document via the web.
PHProjekt

PHProjekt Screenshot
Overview
PHProjekt is a modular application for the coordination of group activities and to share informations and document via the web. Components of PHProjekt: Group calendar, project management, time card system, file management, contact manager, mail client and many other modules.

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Features

Projects
Time card system
Contact manager
Calendar
Chat
Forum
Request tracker
Mail client
Files
Notes
Bookmarks
Voting system
Administration
Todo list
Reminder
Search System