The RandoPony site is written in Python using the Django web framework, and Django's unofficial mascot is a magical pony, so... RandoPony.

Besides, everybody (even a randonneur) wants a pony...

RandoPony is open-source software. It's released under a New BSD License. The source code is available at http://bitbucket.org/douglatornell/randopony/, and you can report issues using the bitbucket issue tracker, or by email to djl at douglatornell dot ca

This instance of RandoPony is hosted on Webfaction. If you're looking for powerful, reasonably priced hosting with very up to date software, and great support, you can use this affiliate link to check them out.