Instant Rails is a cool project that provides developers with a contained sandbox for working with Ruby on Rails. In fact, Instant Rails is a one-stop Rails runtime solution containing Ruby, Rails, Apache, and MySQL, all preconfigured and ready to run. No installer is needed as you simply drop it into the directory of your choice and run it. Â This is a superb tool for developers who are just starting to learn Ruby on Rails but haven’t really progressed past the “playing with it” stage i.e. it doesn’t take a lot of time to set up as it is already preconfigured. I love little time-saving projects like this that generous developers are willing to share with colleagues all over the world.