The Language ⇔ Language Matrix

Languages running in other languages! Source-to-source compilers, interpreters, and bytecode compilers. None of these projects are vetted/assured to be complete. Submit your own link or add corrections. Maintained by Tim Cameron Ryan.

Source	Target
		JavaScript[1]	C/C++	Java	Ruby	PHP	Scala	C#	Clojure	Python	Lua	Haskell	OCaml
	JavaScript	Continuum Narcissus Tailspin	Gum	Rhino dynjs Mug	RKelly	phpjs	js.scala	N/A	N/A	N/A	N/A	N/A	N/A
	C/C++	Emscripten	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
	Java	Doppio Google Web Toolkit (GWT) Java2Script j2js Strongly-Typed JavaScript (STJS)	Cibyl (J2ME) NestedVM	beanshell	N/A	N/A	N/A	N/A	N/A	JPype Py4J	N/A	N/A	N/A
	Ruby	Opal HotRuby ColdRuby rb2js Red 8ball	ruby2c	JRuby RubyFlux	Rubinius	PHP.rb	N/A	IronRuby	N/A	UNHOLY	N/A	N/A	N/A
	PHP	php.js	HipHop Compiler	Quercus	N/A	PHPPHP	N/A	N/A	N/A	phppython	N/A	N/A	N/A
	Scala	Scala+GWT Scala.js JScala	N/A	N/A	N/A	N/A	Metascala	N/A	N/A	N/A	N/A	N/A	N/A
	C#	Saltarelle SharpKit (Commercial) Blade jsc recompiler	N/A	jsc recompiler	N/A	jsc recompiler	N/A	Mono C#	N/A	N/A	N/A	N/A	N/A
	Clojure	ClojureScript	ClojureC Ferret	Clojure	rouge	clj-php	Clojure	clojure-clr	CinC	clojure-py	clojurescript-lua	N/A	N/A
	Python	Pyjaco pyjs Skulpt PyCow Brython Pythonium PyXC-PJ PythonScript PyJS (formerly Pyjamas)	Nuitka shedskin Py2C	Jython	Typhon	N/A	N/A	IronPython Python for .NET	N/A	PyPy	N/A	Berp	N/A
	Lua	lua2js ljs lua.vm.js	N/A	luaj	N/A	N/A	N/A	N/A	N/A	N/A	Metalua	N/A	N/A
	Haskell	Fay GHCJS UHCJS YCR2JS	JHC	Jazy Frege	N/A	N/A	N/A	N/A	N/A	Pyhi	N/A	nhc98	N/A
	OCaml	JS_of_ocaml	OCamlCC	OCaml-Java	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A