An Object/Relational Mapper for Ruby. DataMapper sports a very accessible code-base and a welcoming community. Outside contributions and feedback are welcome and encouraged, especially constructive criticism. Make your voice heard! Submit a ticket[http://datamapper.lighthouseapp.com] or patch[http://datamapper.lighthouseapp.com], speak up on our mailing-list[http://groups.google.com/group/datamapper/], chat with us on irc[irc://irc.freenode.net/#datamapper], write a spec, get it reviewed, ask for commit rights. It's as easy as that to become a contributor.