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List of Free Java Decompilers
List of all free downloadable decompilers for Java. They will convert class files back to readable initial Java source code.

16
Votes

Mocha, the Java Decompiler

The distribution archive (file "mocha-b1.zip") may be distributed freely, provided its contents ("mocha.zip" and this file, "readme.txt") are not tampered with in any way.
http://www.brouhaha.com/~eric/software/mocha/
created by java on 2008-06-12 04:28:55

Home Page of Jad - the fast Java decompiler

Jad is free for non-commercial use, but since the version 1.5.6 it's no longer free for commercial use. This means that Jad cannot be included into software products (especially decompilers) without my prior permission
http://www.kpdus.com/jad.html
created by java on 2008-06-12 04:26:24

DJ Java Decompiler - Free software downloads and reviews - CNET Download.com

The aim of this project is to develope a decompiler for java which is platform independent and has options to obfuscate the class file also. The project takes class file as input and decompiles it and provides the source file.
http://www.download.com/DJ-Java-Decompiler/3000-24
created by java on 2008-06-12 04:31:10

JCavaj Java Decompiler

JCavaj Java Decompiler is a free Java-based Java Decompiler. It reconstructs the original source code from a compiled binary CLASS file. You can decompile java applets, jar and zip files producing accurate java source code.
http://www.bysoft.se/sureshot/jcavaj/
created by java on 2008-06-12 04:27:41

JReversePro - Java Decompiler

JREVERSEPRO is a Java Decompiler / Disassembler written entirely in Java. This reverse engineering utility is issued under the GNU GPL The utlimate objective of this project is to provide a decompiler that generates a Java object-based structure that can be programmatically inspected using a specific API.
http://jreversepro.blogspot.com/
created by java on 2008-06-12 04:22:24

Java Optimize and Decompile Environment (JODE)

JODE is a java package containing a decompiler and an optimizer for java. This package is freely available under the GNU GPL. The bytecode package and the core decompiler is now under GNU Lesser General Public License, so you can integrate it in your project.
http://jode.sourceforge.net/
created by java on 2008-06-12 04:21:54

HomeBrew Java Decompiler

Have you ever lost the source code to a Java program and thought there was no way to get your code back? Well fret no longer, HomeBrew Decompiler to the rescue! It's still far from perfect, but hopefully it will be able to provide enough for you to reconstruct your lost source file.
http://www.pdr.cx/projects/hbd/
created by java on 2008-06-12 04:26:48

Dava: A tool-independent decompiler for Java

Dava is a decompiler for arbitrary Java bytecode. It can be used to decompile bytecode produced by Java compilers, compilers for other languages (AspectJ, SML, C) that generate Java bytecode and tools like Java bytecode obfuscators, instrumentors and optimizers.
http://www.sable.mcgill.ca/dava/
created by java on 2008-06-12 04:23:36

NavExpress DJ Java Decompiler

With NavExpress DJ Java Decompiler you can decompile java CLASS files and save it in text or other format. It's simple and easy.
http://dj.navexpress.com/
created by java on 2008-06-12 04:29:50

Jdec: Java Decompiler

Jdec is a java decompiler which currently supports classes compiled using java compiler from SUN Microsystems LTD Jdec has been tested mainly on 1.4.x release from SUN.However Jdec will attempt to decompile 1.5.x
http://jdec.sourceforge.net/
created by java on 2008-06-12 04:23:04

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