Link: Rails Day 2005 - June 4th.
The Rails Day project would like to thanks the following companies for supporting this contest. Odeo, 37 Signals, The Pragmatic Programmers, Tobias Luetke, the Robot Co-op, Macromates, Ruby Central, Fingertips and Textdrive have all helped enormously.
Rails Day, to create some interesting project within 24 hours using Ruby on Rails. What about Catalyst?