Top listings

phpBB is a high powered, fully scalable, and highly customizable Open Source bulletin board package. phpBB has a user-friendly interface, simple and straightforward administration panel, and helpful FAQ. Based on the powerful PHP server language and your choice of MySQL, MS-SQL, PostgreSQL or Access/ODBC database servers, phpBB is the ideal free community solution for all web sites.

Elegant. Effective. Powerful. Free. SMF is all of the above. SMF is a next-generation community software package and is jam-packed with features, while at the same time having a minimal impact on resources. And, yes, it is free.

Vanilla is an open-source, standards-compliant, multi-lingual, fully extensible discussion forum for the web. Anyone who has web-space that meets the requirements can download and use Vanilla for free!

PunBB is a fast and lightweight PHP-powered discussion board. It is released under the GNU General Public License. Its primary goals are to be faster, smaller and less graphically intensive as compared to other discussion boards. PunBB has fewer features than many other discussion boards, but is generally faster and outputs smaller, semantically correct XHTML-compliant pages.

Achievo is a flexible web-based project management tool for business-environments. Achievo's project management and resource management capabilities will enable organisations to support their business processes in a simple, but effective manner.

ACollab is an accessible, open source, multi-group, Web-based collaborative work environment. ACollab is available as a work groups addon for ATutor 1.4+ , and as a standalone collaborative work environment that will run on its own. ACollab is ideal for groups working at a distance developing documentation, collaborating on research, or writing joint papers, and ideal for online educators who wish to add group learning activities to their ATutor courses.

dotProject is a PHP web-based project management framework that includes modules for companies, projects, tasks (with Gantt charts), forums, files, calendar, contacts, tickets/helpdesk, multi-language support, user/module permissions and themes.

eGroupWare is a free enterprise ready groupware software for your network. It enables you to manage contacts, appointments, todos and many more for your whole business.

WebCollab is a collaborative web-based system for projects and project management; WebCollab is easy to use, and encourages users to work together. The software is functionally elegant and secure without being cumbersome for users, or graphically intensive.

MediaWiki is the collaborative editing software that runs Wikipedia, the free encyclopedia, and other projects. It's designed to handle a large number of users and pages without imposing too rigid a structure or workflow.