fat_free_crm

Vladimir, open source contributions tend to suck unless you're scratching an itch for yourself. You don't contribute for the sake of contributing, that's not going to work. That's why you shouldn't work on Sinatra and other open source tools meant for developers. Instead, build an app for a much wider audience. Do what an entrepreneur trying to sell his app would do, but with open-source - i.e. the end goal being to have real users that appreciate your work. Here's the perfect example: https://github.com/michaeldv/fat_free_crm

Browse around github for a bit. https://github.com/diaspora/diaspora https://github.com/railsdog/spree https://github.com/michaeldv/fat_free_crm https://github.com/resolve/refinerycms

For fun, I dove into this recently. The only strong opinion I have is for Rails projects to ship with Cucumber as means for acceptance testing. Here are a few good Rails projects which satisfy that. * The Rails Dev Directory: http://github.com/engineyard/rails_dev_directory/ * Spree: http://github.com/railsdog/spree * And Gemcutter: http://github.com/qrush/gemcutter. Gemcutter also uses Gemfile. * Fat Free CRM: http://github.com/michaeldv/fat_free_crm. It doesn't use Cucumber, but it's still good code. If you want to get setup with Rails 3.0, check out this gist I wrote: https://gist.github.com/50be644a99ff372d5b1f