Mirage aids testing of your applications by hosting mock responses so that your applications do not have to talk to real endpoints. It's accessible via HTTP and has a RESTful interface.
Any ideas/improvements or feedback you have are greatly appreciated.
Information on how to use Mirage can be found here.
I hope you find it useful,
Leon
P.s. Mirage runs on Linux,MacOSX and Windows; Rubies 1.8, 1.9 and JRuby.
gem install mirage