[beagle3]

There's also gitlab, which is a github style app you can run locally. It used to use gitolite internally for access control, but it is now using its own access control system.

[csense]

I've used both. Gitolite does everything on the command-line, including access management.

Gitlab is essentially an open-source clone of Github's web UI. Of the two projects, I think Gitlab is harder to deploy and far more resource-intensive on the server, but easier for users.

[EdwardDiego]

And there's also gitosis, which IIRC is considered superceded by gitolite, but it's still working well for us.