activeCollab. Need a free open source web based collaboration tool? Kinda like Basecamp but without the fees and stuff? Only tiny hassle is that it needs PHP5, which is a bit of a pain. But this is definitely one to watch.
1. Easy to install and easy to use 2. Web-based. After installation the only thing you’ll need to use it is a web browser 3. 100% open source, 100% free 4. No limitations on number of projects, clients, team members… 5. Per project permissions