This is the Rails port. The Ruby on Rails application that powers http://www.openstreetmap.org.
You can find documentation on how to setup and run the software on the OpenStreetMap wiki:
The canonnical Git repository for this software is hosted at git.openstreetmap.org:
See commiting to the rails port on the wiki for getting your patches integrated:
This software is licensed under the GNU General Public License 2.0. See included LICENSE file for details.