Awesome
Racing on Rails is a bike racing association schedule, results, competitions, and membership database and website.
Open source (MIT license)
Ruby on Rails http://rubyonrails.org/
Documentation, quick start http://racingonrails.rocketsurgeryllc.com/
Google Group http://groups.google.com/group/racing-on-rails
Source Code https://github.com/scottwillson/racing_on_rails
RDoc http://racingonrails.rocketsurgeryllc.com/rdoc
Issues https://github.com/scottwillson/racing_on_rails/issues
Requirements Ruby 2.7 MySQL 5.7