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Rails Rumble is a competition which gives teams of developers 48 hours to build the best web app that they can using Ruby on Rails. It is similar in spirit to Rails Day.
The first competition was held from September 8–9, 2007.
The sponsors of Rails Rumble 2008 include Apress, Inc., linode.com, GitHub, and O'Reilly Media. These sponsors contributed the prizes for the event, which included free memberships for various online services, hardware, T-shirts, and, in 2008, a Rails Rumble belt for the first place winner.