Gitorious is AGPL. You can find the source code at https://gitorious.org/gitorious/

Uhm. What? Gitorious is a rails app. Open-source, you can deploy it internally for free. Gitlab, last I checked, ditto.

Sort-of. Gitorious the web site sells stuff, but gitorious the server software itself is free (AGPL): https://gitorious.org/gitorious

Gitlab is open source. So is the other one ...