I have often used SVN as Source Code versioning. Its quite a manual process to create new users, groups or repositories. Not time consuming but very manul task. This prompted me to create a PHP application which I could use to do this easily without having to logon to SVN server. This proved to be quite useful as we work on projects as team. So, now every developer can do this on their without having to send this request to me. See, real easy. Any ways, you can grab this code from following links.
Code at phpclasses.org
Code at code.google.com