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.
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.