[raytheon]

I recently started using redmine (http://www.redmine.org) and only had good experiences with it. It's an open-source ruby on rails project management "framework". It supports everything you are looking for, and then some more, namely:

- roadmap for upcoming versions/features - dedicated site for documentation - wiki - forum - tickets - repository support

The repository support let's you do things like refer to a ticket in a commit message which then gets associated with said ticket (or even changes the status of the ticket as soon as you commit the bugfix).

I could go on and on... but you get the point.

Here's a demo where you can give some of the things a try:

http://demo.redmine.org/