MimerDesk

MimerDesk is a web-based collaborative learning and groupwork environment designed for a wide variety of uses such as personal management, computer-supported collaborative learning, carrying out projects, and setting up communities. Its main strengths include a very customizable group system which allows many groups to work simultaneously on a shared database with tools like Calendar, Tasks, Forums, Links, Chat, Reviews, Voting, Files, Instant Messages, Profiles, and many more.