Mercurial
Mercurial represents one of the leading distributed revision control systems .
Find out more about Mercurial here.
Google TechTalk about Mercurial
Google TechTalks June 19, 2006 Bryan O'Sullivan is a Senior Principal Engineer at QLogic, Inc, where he works on HPC clustering and compiler technologies. Well-known open source projects that use Mercurial include OpenSolaris, Xen, and One Laptop Per Child. This talk presents some of the advantages of using Mercurial to manage large, fast-moving projects.

