I have started to add my free WordPress Plugins on GitHub for development tracking and for other developers who wish to contribute any features or fix a bug they have found. I am also pleased to announce that I have shared the source code for WordPress Online Installer allowing others who would like to take part in helping me develop the service site more or use it as a starter to create another CMS online setup service site i.e. Drupal. More details on how the script works is in the readme file.
Certain parts have been removed that are only for wpsetup.org e.g. Change Log, Stat counter, Google Analystics, Supported Adverts and so on. The header of the site has also been removed along with the stylesheet. You can make your own if you are to creating another setup site.
Look forward to others forking.