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.
It is translated into more than 20 languages and has a modular design that allows extra modules (such as time sheets, and inventory) to be added in easily. A separate project - dotmods, has been set up as a repository for modules.
