One good example that I can point out is Homebrew's github repository[1] The README is so clear and welcoming new contributors, by telling how exactly they can

One good example that I can point out is Homebrew's github repository[1] The README is so clear and welcoming new contributors, by telling how exactly they can start contributing. In fact that encouraged me to start contributing to opensource. Now I'm doing Google Summer of Code under the same organization. [1] https://github.com/homebrew/brew https://github.com/homebrew/brew