Gobby is a free collaborative editor based on libobby, a library which provides synced document buffers. It supports multiple documents in one session and a multi-user chat. It runs on Microsoft Windows, Mac OS X, Linux and other Unix-like platforms.
Integrated email, calendar, documents, VoIP - "Over the air" sync to mobile devices - Microsoft Outlook, Apple, and Linux desktop compatibility - Effortless administration
PHProjekt is a modular application for the coordination of group activities and to share informations and document via intranet and internet. Components of PHProjekt: Group calendar, project management, time card system, file management, contact manager,