Installs Ruby, JRuby, Rubinius, TruffleRuby or MRuby
A versatile Ruby web spidering library that can spider a site, multiple domains, certain links or infinitely. Spidr is designed to be fast and easy to use.
Calculate the differences between two XML/HTML documents.
Zero-dependency Ruby CLI boilerplate code
Bringing (more) Combinatorics to Ruby.