Redmine (http://www.redmine.org/ http://www.redmine.org/) is also a good choice (free, fast, easy to setup and use), especially if you want other project manage

Redmine (http://www.redmine.org/ http://www.redmine.org/) is also a good choice (free, fast, easy to setup and use), especially if you want other project management features. We use it, and are happy with it.