revision control system-bazaar

http://wiki.bazaar.canonical.com/WindowsDownloads
http://wiki.bazaar.canonical.com/Documentation

Bazaar is a decentralized revision control system. Revision control involves keeping track of changes in software source code or similar information, and helping people work on it in teams. Bazaar is a free software project with a large community of contributors, sponsored by Canonical Limited, the founders of Ubuntu and Launchpad. Bazaar is genuinely Free Software, released under the GNU GPL. It is written in Python and designed for correctness, performance, simplicity, and familiarity for developers migrating from CVS or Subversion.

from http://wiki.bazaar.canonical.com/Bzr