Things-you-never-wanted-to-know is a project mainly written in Ruby, it's free.
Things you never wanted to know how to do in Ruby, and was afraid to ask.
These mini-projects are just case-studies of what Ruby is capable to do.
PLEASE NOTE: I'm not, by any means, asking you to use these codes in your application. In truth, if I can say anything, is DO NOT USE THIS ON YOUR PROJECTS! This is just a case study, and it's not intended to be used in anything, ESPECIALLY in production-ready softwares!