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Best ShowJava Alternatives ranked by AI · updated Aug 2026

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ShowJava is a web-based Java decompiler for inspecting compiled class files and JAR archives. It is aimed at developers and researchers who need readable Java source from bytecode without installing a desktop application.

Developer: Konloch Price: Free 🎯 w3schools.com/java/showjava.asp

Top 6 ShowJava alternatives

1

πŸ’‘ Pick it for a straightforward local desktop interface instead of uploading files to ShowJava.

JD-GUI is a standalone graphical utility that displays Java source codes of .class files.

Pros

  • User-friendly interface
  • Decompile Java classes

Cons

  • Limited advanced features
  • No active development
2 CFR logo

CFR

πŸ’‘ Choose it when you need modern Java support, local processing, or repeatable command-line workflows.

CFR is a comprehensive software solution for managing regulatory compliance.

πŸ’‘ Pick it if you already use IntelliJ IDEA and want decompiled libraries directly in your IDE.

Fernflower is a Java decompiler that is part of the JetBrains IntelliJ IDEA IDE.

Pros

  • Part of IntelliJ IDEA
  • Decompile Java bytecode

Cons

  • Requires IntelliJ IDEA installation
  • Limited standalone usage
4 JADX logo

πŸ’‘ Choose it when the target is an Android APK or DEX file rather than a standard Java class or JAR.

JADX is a decompiler for Android applications that can turn Android bytecode (APK) into human-readable Java source code.

πŸ’‘ Pick it when you need an embeddable Java decompiler or metadata tools for a development workflow.

Procyon is a Java decompiler that can decompile Java 5 and later bytecode.

Pros

  • Supports Java 8 features
  • Decompile obfuscated code

Cons

  • Limited GUI interface
  • May not handle complex code structures
6

Bytecode Viewer

Konloch

πŸ’‘ Choose it for a full local analysis workspace with multiple decompilers and bytecode views.

Bytecode Viewer is a free Java bytecode inspection and decompilation tool for developers, security researchers, and reverse engineers. It combines multiple decompilers,...

Pros

  • Bundles several Java decompilers and disassemblers in one interface
  • Supports browsing archives and inspecting classes without a build environment
  • Includes bytecode editing and analysis features beyond basic decompilation

Cons

  • Interface is less polished than dedicated tools such as Recaf or JD-GUI
  • Results depend on bundled decompiler versions and can vary between engines
  • Uses more memory than lightweight command-line decompilers

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