dotProject - Open Source Project Management
dotProject is a web-based, multi-user, multi-language project management application. It is a free and open source software. 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.
Find out more:
http://www.dotproject.net/
Submitte by Petia Markova - New Media Ambassador at GEYC Resources Center