From Authentication Tools for Joomla! (JAuthTools)
I'm happy to receive patches to the project if you're willing to submit them. If you can create them through the tracker system on Joomla!Code that allows me to track them down and make suer that I get them actioned and completed. Alternatively I will happily accept code via email. Finally if you want to work in a more regular role on the project, I am more than happy to grant you access to the Subversion repository. Again, email me with your details or create a request on the Joomla!Code tracker and I will get around to it as soon as possible.