MercurialEdit
Mercurial is a distributed version control system written in Python. Personally, I prefer Git.
Links
- Official site: http://www.selenic.com/mercurial/
- Downloads: http://mercurial.selenic.com/downloads/
 
 
- Wikipedia article on Mercurial: http://en.wikipedia.org/wiki/Mercurial_(software)
 
- Downloads: http://mercurial.selenic.com/downloads/