Zimbra is open source server and client software for messaging and collaboration - email, group calendaring, contacts, and web document management and authoring. The Zimbra server is available for Linux, Mac OS X, appliances, and virtualization platforms. The Zimbra Web 2.0 Ajax client runs on Firefox, Safari, and IE, and features easy integration / mash-ups of web portals, business applications, and VoIP using web services.
JForum is a powerful and robust discussion board system implemented in Javatm. It provides an attractive interface, an efficient forum engine, an easy to use administrative panel, an advanced permission control system and much more.
Built from the ground up around a MVC framework, it can be deployed on any servlet container or Application Server, such as Tomcat, Resin and JBoss. Its clean design and implementation make JForum easy to customize and extend.
Best of all, JForum is freely available under the BSD Open Source license.
If you or your company are searching for a serious and robust Forum Software, JForum is the right choice.
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,
Zimbra is an open source server and client technology for next-generation messaging and collaboration. Zimbra delivers innovation for both the administrator and the end-user as well as compatibility with existing infrastructure and applications (both open source and proprietary).