[zalambar]

Git is distributed and there's no reason you should have to stop working, or committing, just because github is temporarily unavailable. At least for dependencies only on git. Losing access to wikis, pull requests, and issues may be a problem for some teams.

http://ozmm.org/posts/when_github_goes_down.html has a good summary of quick ways to keep using git without github.

[bitcartel]

Fossil has built-in issues and wiki. It just never became popular.

[threedaymonk]

The only prominent Fossil user I'm aware of is Zed Shaw, and he's since recanted after losing data and having trouble upgrading: http://sheddingbikes.com/posts/1306005291.html