java decompiler... list

Mocha - http://www.brouhaha.com/~eric/computers/mocha.html 
Hanpeter van Vliet's first Java Decompiler. Orphaned at Java 1.02, so crashes on inner classes. [Freeware]

WingDis 2.15 - http://www.wingsoft.com/wingdis.shtml 
Command line Java decompiler. [Commercial]

SourceAgain - http://www.ahpah.com/product.html 
Java Decompiler for Win95/NT, Unix, web-based trial version from Ahpah Software. [Commercial]

Jad - http://www.geocities.com/SiliconValley/Bridge/8617/jad.html 
the fast Java decompiler. Separate versions for Win32, OS/2, most Unixen. [Freeware].

SourceTec Java decompiler - http://www.srctec.com/decompiler.htm 
Patch to Mocha which defeats Crema. [Shareware]

NMI's Java Code Viewer - http://njcv.htmlplanet.com 
The "user-friendly, visual" Java decompiler and disassembler for Win32 platform. [Shareware]

Java Code Engineering - http://www.meurrens.org/ip-Links/Java/codeEngineering/ 
Marc Meurrens' page on engineering & reverse engineering Java class files. Review of books and on line resources on: the Java Virtual Marchine (JVM); code engineering & reverse engineering; class browsers, viewers & editors; assemblers; compilers; disassemblers & decompilers; obfuscators & unobfuscators. Comprehensive, well organized site.

Decafe Pro - http://decafe.hypermart.net/ 
Java Decompiler for Win32 platform. [Commercial]

 Kimera - http://kimera.cs.washington.edu/disassembler.html 
Online Java Disassembler. Just enter an URL of a .class file and it will be disassembled into a form suitable for re-assembly by Jasmin. [Freeware] 

Dumping Class Files - http://professionals.com/~cmcmanis/java/dump/index.html 
Chuck McManis's code to parse class files. [Free for non-commercial].

ClassCracker - http://www.pcug.org.au/~mayon/ 
Visual Java decompiler from Mayon Software Research. [Commercial]

Java Optimize and Decompile Environment (JODE) - http://jode.sourceforge.net/ 
Java decompiler with full source code. Supports inner/anonymous classes. Also contains a small, but extensible bytecode obfuscator/optimizer. [Open Source, GPL]

CafeBabe - http://jfa.javalobby.org/projects/CafeBabe.html 
Graphical disassembler and editor of Java bytecodes. Part of the JFA. [Open Source]

RIIS: Decompiling Java - http://www.riis.com/depile.html 
Godfrey Nolan's book on writing your own Java decompiler may never be published, so early chapters are online in PDF format.

dis - http://www.cs.princeton.edu/~benjasik/dis/index.html 
A functional, fast and simple disassembler that is written in C. Like javap, produces bytecode. Download Solaris, Win95/NT versions. Mac or other Unixen or source code by email request. [Freeware]

BackToJava (BTJ) - http://www.backtojava.org/ 
General tool for manipulation of Java bytecode (disassembly, assembly, statistics, decompilation, debug information...), written in Java. In progress. [Open Source, LPGL]

JReveal.Org - http://www.jreveal.org 
Online decompiler and obfuscator. Also has a resource directory. [Freeware]

IceBreaker - http://www.suddendischarge.com/cgi-bin/antileech.cgi?icebreak10.zip 
(Zip-file) A 'Visual' Java decompiler/disassembler. Allows side-by-side comparison of disassembled byte code from class files, for easier decompilation. "Replete with bugs" and dependent on command-line decompiler, such as Mocha or Javap. [Freeware]