"Bazaar is a distributed version control system (VCS) available
under the GPL; it's similar to Subversion (svn). Bazaar is
sponsored by Canonical, Ltd., the company that develops the Ubuntu
Linux distribution, and therefore the Ubuntu project is the most
prominent user of Bazaar. This article explains how to set up and
use Bazaar on a Debian Etch system, and how to configure an
SFTP-/HTTP server to host your Bazaar repository..."