Project Managers (or Groupware) are online platforms to manage, plan, schedule and share you projects with others. Collaborative software helps groups of people focused on a common task, achieve their goal in a more effective way.
This type of websites usually offer you boards (forum), calendars, task lists, SVN and other capabilities to help you manage your group projects enabling a more effective team collaboration. I use a simple but powerful version of what you can call a SVN / Repository application, DropBox but for group work you will probably need something more powerful. The list below offer you some options that will probably meet your need.
- PHP Projekt
- Google Wave
- Google Code
- Tortoise SVN