Aside from what was mentioned, you can also self-host perforce at a relatively low cost (provided you don't need more than 20 users, as that's all perforce's fr

Aside from what was mentioned, you can also self-host perforce at a relatively low cost (provided you don't need more than 20 users, as that's all perforce's free license supports). I personally host a perforce server on google compute engine for around $15 a month (g1-small + whatever size persistent disk you want). Relatively easy to set up (they provide repositories for ubuntu and fedora iirc), configuration is largely interactive when setting up or through the P4Admin tool (which allows you to very easily setup permissions, depots, etc). I know that isn't fully managed like github and doesn't provide issue tracking, wikis, etc, but I've found it fairly easy to deal with if you know a bit of how to setup a linux VPS.