Bazaar Revision Control System (bzr) is a changeset-oriented revision control system. (read more)
Canonical announces commercial services for its version control system, Bazaar
Set up, support
and troubleshooting now available for new and existing deployments
Phoronix: GNU Emacs Finally Switching Over To Git From Bazaar
GNU Emacs is finally in the process of transitioning to Git for their revision control system rather than GNU Bazaar...