Opal is a Ruby to JavaScript source-to-source compiler
Opal is a Ruby to JavaScript source-to-source compiler. It comes packed with the Ruby corelib you know and love. It is both fast as a runtime and small in its footprint. The lib directory holds the Opal parser/compiler used to compile Ruby into JavaScript. It is also built ready for the browser into opal-parser.js to allow compilation in any JavaScript environment. This directory holds the Opal runtime and corelib implemented in Ruby and JavaScript. opal-parser allows you to eval Ruby code...
Fusion is a powerful high level programming language that merges several feature from Ruby, Python, Java, C++, Visual Basic, etc, in a only language. It's implemented by means of a compiler written in Haskell that generates Ruby code.
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Ruby On Flash is a compiler written in Java that compiles Ruby source code directly into Flash applications(.swf files), and aims to provide a programmer-friendly approach to casual Flash game development.
Jaby=Java+Ruby
Jaby is a programming language that extends Java with the syntax of do/yield in Ruby.
Jaby also provide a set of library that written in Jaby.
FGL is a tightly-integrated self-contained development & execution environment utilizing best-of-breed programming tools and methodologies, optimized web/application server, highly-scalable relational/object database, and robust extension interface.
The Voodoo compiler is an implementation of the Voodoo programming language. It provides both a stand-alone compiler executable and a Ruby API for generating code for target platforms.