Subversion
The XBean project uses the Subversion version control system. If you're new to Subversion, the free O'Reilly Version Control with Subversion book is an excellent starting point.
Web Access to Subversion
http://svn.apache.org/repos/asf/geronimo/xbean/trunk/ http://svn.apache.org/viewvc/geronimo/xbean/trunk/
Anonymous Access to Subversion
svn co http://svn.apache.org/repos/asf/geronimo/xbean/trunk/
Developer Access to Subversion
svn co https://svn.apache.org/repos/asf/geronimo/xbean/trunk/