Drigan is an events aggregator. Everyone can add his own event, describe it and see how other people are registering for it.
The documentation and installation instructions are available on Read the Docs : http://drigan.readthedocs.org/en/latest/.
We are using JIRA to manage our work, but if you found any bugs please let us know about them using Bitbucket issues: https://bitbucket.org/zeroos/drigan/issues