Github is a quite popular code hosting and collaboration platform and a lot of people including me really like it.

In some cases however you might not want to store your source code on any other server but your own. At the same time you’d still appreciate the same cool features. This is where Gitorious comes into play. Gitorious offers a pretty similar service like Github, but it is open source!

You can download the software from their servers and install it on your own ones. This is really really neat for companies, but also useful in other occasions. I remember that we used Trac for one of our projects at University. Trac is nice, but only supports Subversion. In case you’d like to use Git, Gitorious is your choice.

Update:
This is a great blog post about how to install Gitorious: Setting up Gitorious on your own server