Ferramentas para comprimir código e programar js, inclusive em linha de comando:

http://0fx66.com/blog/programacao/lista-de-compactadores-de-javascript/

http://focalizaisso.com.br/compactador-de-js-e-css/
Com esse compactador você jamais entenderá seu código compactado, vira um hash enorme
http://rumkin.com/tools/compression/compress_huff.php
Vira um hash maior ainda:
http://javascriptcompressor.com/
Com esse aqui seu código vira uma simples imagem mega compactada

http://blog.renatolouro.com.br/2010/09/como-compactar-codigo-javascript-em-um-png/?utm_source=Chavao&utm_medium=twitter&utm_content=Twitter




https://developer.mozilla.org/en/Rhino_Shell

https://developer.mozilla.org/en/Rhino_Overview

https://developer.mozilla.org/en/Rhino_Requirements_and_Limitations

https://developer.mozilla.org/en/Scripting_Java

http://www.mozilla.org/rhino/scriptjava.html

http://www.mozilla.org/rhino/perf.html

http://www.mozilla.org/rhino/debugger.html

https://developer.mozilla.org/en/Rhino_Shell

https://developer.mozilla.org/en/Rhino_JavaScript_Compiler

http://www.mozilla.org/rhino/tutorial.html

http://www.mozilla.org/rhino/serialization.html

https://developer.mozilla.org/En/Rhino_documentation/Scopes_and_Contexts

http://www.mozilla.org/rhino/runtime.html

http://jnb.ociweb.com/jnb/archive/jnbMar2001.html

https://developer.mozilla.org/en/Rhino_documentation


http://blog.siliconforks.com/

http://siliconforks.com/

http://siliconforks.com/jscoverage/

http://siliconforks.com/jscoverage/manual.html

http://siliconforks.com/jscoverage/demo.html

http://siliconforks.com/doc/

http://siliconforks.com/doc/debugging-javascript/

http://siliconforks.com/doc/parsing-javascript-with-spidermonkey/