Graphical disassembler and editor of Java bytecodes. [Open Source] Note: download at parent page.

A freeware utility that reconstructs java source code from CLASS files. You can browse the reconstructed source code with the Class View for instant access to methods and fields. It uses Jad as its Java decompiling engine. [Freeware]

Visual Java decompiler from Mayon Software Research. [Commercial]

GUI class analyser and decompiler. Also provides a simple obfuscator. [Freeware]

Java Decompiler for Win32 platform. [Commercial]

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]

The fast Java decompiler. Separate versions for Win32, OS/2, most Unixen. Large choice of command-line and GUI front-ends available. [Free for non-commercial]

A decompiler for Java which is platform independent and has options to obfuscate the class file also. [Open source, Public Domain]

A free Java-based Java Decompiler. It uses Jode as its Java decompiling engine. [Open source, GPL]

Java decompiler with full source code. Supports inner/anonymous classes. Also contains a small, but extensible bytecode obfuscator/optimizer. [Open Source, GPL]

Online decompiler and obfuscator. Also has a resource directory. [Freeware]

Decompiler/disassembler written entirely in Java. Provides facility to inspect constant pool contents. [Open Source, GPL]

Hanpeter van Vliet's first Java Decompiler. Orphaned at Java 1.02, so crashes on inner classes. [Freeware]

Godfrey Nolan's book on writing your own Java decompiler. Early chapters are online in PDF format.

Java Decompiler for Win95/NT, Unix, web-based trial version from Ahpah Software. [Commercial]

Patch to Mocha which defeats Crema. [Shareware]