Bazaar-NG is a decentralized revision control system. Revision control involves keeping track of revisions of software source code or similar information, and helping people work on it in teams. Bazaar-NG is sponsored by Canonical Limited, the founders of Ubuntu and Launchpad. Bazaar-NG is Free Software, released under the GNU GPL. The software is written in Python and designed for performance, simplicity, and familiarity for developers migrating from CVS or Subversion.