Browse free open source Java Decompilers and projects below. Use the toggles on the left to filter open source Java Decompilers by OS, license, language, programming language, and project status.

  • Dun and Bradstreet Connect simplifies the complex burden of data management Icon
    Dun and Bradstreet Connect simplifies the complex burden of data management

    Our self-service data management platform enables your organization to gain a complete and accurate view of your accounts and contacts.

    The amount, speed, and types of data created in today’s world can be overwhelming. With D&B Connect, you can instantly benchmark, enrich, and monitor your data against the Dun & Bradstreet Data Cloud to help ensure your systems of record have trusted data to fuel growth.
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  • Repair-CRM Icon
    Repair-CRM

    For small companies that repair and maintenance customer machines

    All-In-One Solution with an Online Booking portal for automating scheduling & dispatching to ditch paperwork and improve the productivity of your technicians!
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  • 1
    JADX

    JADX

    Dex to Java decompiler

    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.
    Downloads: 1,138 This Week
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  • 2

    unluac

    A decompiler for Lua 5.x

    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.
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    Downloads: 683 This Week
    Last Update:
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  • 3
    Luyten

    Luyten

    An open source Java decompiler Gui for Procyon

    Luyten is an open source Java decompiler GUI for Procyon.
    Downloads: 56 This Week
    Last Update:
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  • 4
    Bytecode Viewer

    Bytecode Viewer

    A reverse engineering suite (decompiler, editor, debugger and more)

    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.
    Downloads: 48 This Week
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  • AI-First Supply Chain Management Icon
    AI-First Supply Chain Management

    Supply chain managers, executives, and businesses seeking AI-powered solutions to optimize planning, operations, and decision-making across the supply

    Logility is a market-leading provider of AI-first supply chain management solutions engineered to help organizations build sustainable digital supply chains that improve people’s lives and the world we live in. The company’s approach is designed to reimagine supply chain planning by shifting away from traditional “what happened” processes to an AI-driven strategy that combines the power of humans and machines to predict and be ready for what’s coming. Logility’s fully integrated, end-to-end platform helps clients know faster, turn uncertainty into opportunity, and transform the supply chain from a cost center to an engine for growth.
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  • 5
    Jar Explorer is a simple, easy-to-use application to browse the contents of jar files. It also includes a class decompiler.
    Downloads: 17 This Week
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  • 6
    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.
    Downloads: 23 This Week
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  • 7
    Jad Java decompiler plugin for Eclipse IDE.
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    Downloads: 8 This Week
    Last Update:
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  • 8
    HydraDragonAntivirus

    HydraDragonAntivirus

    Dynamic and static analysis with Sandboxie for Windows, including EDR

    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
    Downloads: 17 This Week
    Last Update:
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  • 9
    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]
    Downloads: 5 This Week
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  • Rezku Point of Sale Icon
    Rezku Point of Sale

    Designed for Real-World Restaurant Operations

    Rezku is an all-inclusive ordering platform and management solution for all types of restaurant and bar concepts. You can now get a fully custom branded downloadable smartphone ordering app for your restaurant exclusively from Rezku.
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  • 10
    JODE is a java package containing a decompiler and an optimizer (aka obfuscator ;-) for java.
    Downloads: 3 This Week
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  • 11
    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.
    Downloads: 0 This Week
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  • 12

    DeClassify

    A Java Decompiler with a catchy name.

    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.
    Downloads: 0 This Week
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  • 13
    EJDC is a java class file decompiler written by java language. The full name of this project is "Emilio's Java Decompiler".
    Downloads: 0 This Week
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  • 14
    IdeaJad is a free plugin that allows you to decompile java class files from within IntelliJ IDEA using the popular decompiler JAD.
    Downloads: 0 This Week
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  • 15

    JBVD

    Java Bytecode Viewer & Decompiler

    A very powerful java bytecode viewer and decompiler which makes use of the javassist open source library.
    Downloads: 0 This Week
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  • 16

    JClassViewer

    A Java class viewer and decompiler which respect line numbers.

    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
    Downloads: 0 This Week
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  • 17
    Java decompilation tools from 'Decompiling Java' book published by Apress.
    Downloads: 0 This Week
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  • 18
    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.
    Downloads: 0 This Week
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  • 19
    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.
    Downloads: 0 This Week
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  • 20
    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)
    Downloads: 0 This Week
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  • 21
    Java Decompiler is a java package containing decompiler which will support latest features to successfuly recreate missing code
    Downloads: 0 This Week
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  • 22
    JodeEclipse is a plugin for integrating the Jode Java Decompiler with the Eclipse IDE.
    Downloads: 0 This Week
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  • 23
    Sourceless Java Decompiler plug-in for Netbeans (6.5 +)
    Downloads: 0 This Week
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  • 24
    Swf Reader

    Swf Reader

    Adobe Flash SWF file reader, editor

    Adobe Flash SWF editor which can read and edit bytecode.
    Downloads: 0 This Week
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  • 25
    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.
    Downloads: 0 This Week
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