Class Editor (ottimo) http://classeditor.sourceforge.net/
http://members.fortunecity.com/neshkov/dj.html
http://blogs.azulsystems.com/cliff/2008/09/death-by-decomp.html
http://mindprod.com/jgloss/disassembler.html
alcune faqs http://www.faqs.org/docs/Linux-HOWTO/Java-Decompiler-HOWTO.html