The 1.2.0 version of RubyCocoa for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free Mac app was originally developed by Rubycocoa. The software belongs to Developer Tools.
From the developer:
RubyCocoa is a framework for Mac OS X that allows Cocoa programming in the object-oriented scripting language Ruby. This app lets you write a Cocoa application in Ruby. It allows you to create and use a Cocoa object in a Ruby script. It's possible to write a Cocoa application that mixes Ruby and Objective-C code.
You may want to check out more software for Mac, such as LimeChat, GitNub or JSCocoa, which might be similar to RubyCocoa.