Open Source Decompilers

unluac is a decompiler for Lua 5.0 through 5.4. It runs on Lua chunks that have been compiled with the standard Lua compiler. It requires that debugging information has not been stripped from the chunk. (By default, the Lua compiler includes this debugging information.) This program is written in Java. A JAR package is available in the downloads section so you don't have to compile it. It runs from the command line and accepts a single argument: the file name of a Lua chunk. The decompiled code is printed to the standard output. Here is an example usage of unluac: java -jar unluac.jar myfile.lua > myfile_decompiled.lua The current version also has pretty good support for Lua 5.0 and Lua 5.1. Support for later versions is also good if the code doesn't use too many gotos.

Jad Java decompiler plugin for Eclipse IDE.

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.

After a program has been thrown into the world in binary form, it can boomerang back as source code. The Boomerang reverse engineering framework is the first general native executable decompiler available to the public.

JODE is a java package containing a decompiler and an optimizer (aka obfuscator ;-) for java.

Dynamic and static analysis with Sandboxie for Windows, including EDR, ClamAV, YARA-X, custom machine learning AI, behavioral analysis, NLP-based detection, website signatures, Ghidra, Suricata, Sigma, and much more than you can imagine

Adobe Flash SWF editor which can read and edit bytecode.

Android App Decompiler is a useful Tool to unextract and decompiles Android APK. When you runed the Decompiler than created an folder with all Files from then APK and the dex (dalvik executable format) being converted to an jar file. You must only now use an Java Decompiler like jd-gui and you have all files of the App.

JadRetro is a Java decompiler helper supporting Java 1.5+ classes. JadRetro is not a decompiler itself, it is a class transformer helping some old (but good) Java decompilers to convert more class files and/or generate more correct source code.

JReversePro is a Java Decompiler / Disassembler written in Java. Facility to view the ConstantPool contents is available. AWT, Swing and command-line versions are present.

A Java Decompiler that is based on the object oriented premise of Java. Everything is an object. The intermediate between bytecode and source os an object.

Desquirr is a decompiler plugin for Interactive Disassembler Pro. It is currently capable of simple data flow analysis of binaries with Intel x86 machine code.

.Net Assembly Viewer/Disassembler/decompiler is a .net assembly viewer, disassembler and decompiler written in C#.

IdeaJad is a free plugin that allows you to decompile java class files from within IntelliJ IDEA using the popular decompiler JAD.

Java decompilation tools from 'Decompiling Java' book published by Apress.

Java-program to read, modify and execute class-files. a real java VM written in java or a decompiler for class-files is possible (and partially working)

MEDDAC is the seeding point for designing a new approach to Operating System design itself. It is an Open Source project with roots in mainframe design and development the author began in 1979. Monitor Editor Disassembler Decompiler Assembler Compiler

net-unwind is an open-source .NET decompiler for GNU/Linux based systems. It can decompile any .NET from Intermediate Language (based on CLR) back to similar or identical source code to the original in C#. A Qt GUI is provided for easy navigation.

The purpose of the FreeSC project is develop free scenery compiler/decompiler for Microsoft Flight Simulator.

Project moved to https://github.com/electrojustin/triad-decompiler

arCHMage is a reader and decompiler for files in the CHM format. This is the format used by Microsoft HTML Help, and is also known as Compiled HTML.

Java decompiler written in C++ aimed to decompile Java 6.0 (and below) class files. The intention of the decompiler is to generate source files using as much information provided in the class file as possible.

Palm DataBase compiler/decompiler. The compiler (pdbc) converts a source code into the binary PDB file format used by Palm PDAs to store information. The decompiler (pdbdec) converts any binary PDB file into source code understood by pdbc. The la

wxWidgets port of GComp utility - an 1C:Enterprise metadata (md) compiler/decompiler