RubyStack

A preconfigured, ready to run installer for Apache, MySQL, Rails and a number of extensions such as Mongrel and ImageMagick. It runs on Windows, OS X and most Linux versions. The installation is self-contained and will not interfere with your existing installations. It can be downloaded from the BitNami RubyStack site . Since it is really easy to use, it is ideal for quickly setting up testing and development environments.