TL;DR The Ruby Spec Suite is actively maintained at ruby/spec and MRI, JRuby, Opal and various individuals are contributing to it. Any contribution is welcome! Once Upon a 31st December … @brixen, the main contributor to RubySpec, decided to end the project. While no longer maintaining the project is understandable, ending it entirely might be a bit presumptuous. A few days later, @headius started