Open Source Java Decompilers

Command-line and GUI tools for producing Java source code from Android Dex and apk files. Decompile Dalvik bytecode to java classes from APK, dex, aar, aab and zip files. Decode AndroidManifest.xml and other resources from resources.arsc. Deobfuscator included. Be aware, Android Studio can interfere with jadx debugger, so it is better to close it before attaching to the process in jadx. Smali debugger, check wiki page for setup and usage. View decompiled code with highlighted syntax.

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.

Luyten is an open source Java decompiler GUI for Procyon.

Jad Java decompiler plugin for Eclipse IDE.

Some of Bytecode Viewer features are that it provides Java Decompiling with Six different decompilers (DJ-GUI/Core, Procyon, CFR, Fernflower, Krakatau, and JADX-Core). Bytecode Decompiling with CFIDE. Android APK integrated with Dex2Jar. Securely launch Java applications and insert hooks via EZ-Injection. Scan for malicious code with the Malicious Code Scanner plugin. Export as DEX, Jar, Class, Zip or Java Source File. Open Android APKs, Android DEX, Java Class Files and Java Jars. (WAR & JSP Support!). Extensively configurable, over 100+ settings! Works seamlessly with all Operating Systems. Integrates BCV into Windows by installing it, it'll associate all .class, .dex and .apk to open with BCV. You can view Jar & APK Resources with ease by APKTool.jar integration. It is 100% free and open sourced under GPL v3 CopyLeft.

Jar Explorer is a simple, easy-to-use application to browse the contents of jar files. It also includes a class decompiler.

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.

jdec is a Java Decompiler. It can be used to reverse the bytecodes present in a .class File to produce a Java Source File which can be nearly correct or equivalent (Due To different Interpretations) to the original java file.[With UI & command line]

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.

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

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.

A very powerful java bytecode viewer and decompiler which makes use of the javassist open source library.

JodeEclipse is a plugin for integrating the Jode Java Decompiler with the Eclipse IDE.

Tool for managing patch codes for the Nintendo Wii. Formats this tool handles are common to Gecko OS and popular Wii homebrew software. This is one of very few complete cross-platform GCT compilers and the only known GCT decompiler and merge tool.

Adobe Flash SWF editor which can read and edit bytecode.

EJDC is a java class file decompiler written by java language. The full name of this project is "Emilio's Java Decompiler".

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)

Java Decompiler, Disassembler and Bytecode debugger. Decompiler supports Java 5 (e.g. generics, for-each loops etc). Debugger allows user to step through each bytecode and view program state. Contains Swing GUI.

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.

JClassViewer is a viewer for class and jar files. Features: - required Java 7 or higher - used the line numbers to reconstruct an output that is near to the original output. - debugging in Eclipse - should support other languages like Scale in the future

Java Decompiler is a java package containing decompiler which will support latest features to successfuly recreate missing code

Sourceless Java Decompiler plug-in for Netbeans (6.5 +)

dxcut is a library for reading, editing, and writing dex and odex files which contain the class definition and Dalvik bytecode used by the Android operating system. This project includes a disassembler/decompiler, dex optimizer, and hooking utils.