Free Tools to View Internals of Binary File, including .class, .dex, .elf, .zip, etc.

• Updated Jan 18, 2026
• Java

Java Virtual Machine

• Updated Mar 11, 2026
• Rust

An unofficial backport of the JDK Classfile API to Java 17

• Updated Feb 27, 2026
• Java

JVM classfile parser and writer for Rust

• Updated Apr 22, 2021
• Rust

Java class file parser for Zig

• Updated Feb 2, 2023
• Zig

Yong GoKai Fa De JavaZi Jie Ma Jie Xi Qi ,He "javap"Ming Ling Zuo Yong Yi Zhi Java class file parser plays the same role as "javap"

• Updated Oct 17, 2017
• Go

Java Class file parser and analyzer written in Clojure

• Updated Dec 2, 2019
• Clojure

Inactive: A Rust library for reading and writing Java classes.

• Updated Dec 2, 2023
• Rust

Class File Analyzer (CFA)

• Updated Sep 24, 2025
• Java

Flexible setting able SATySFi class files

• Updated Apr 30, 2023

A Rust library for parsing JVM class files.

• Updated Mar 14, 2019
• Rust

Yong Yi Ge Lei (Zhi Yi Lai jdk)Shi Xian Liao javaWen Jian Jie Xi ,Ke Yi Yong Zhe Ge Lei Huo Qu Ju Bu Bian Liang Biao ,Zi Jie Ma ,Xing Hao Deng

• Updated Apr 28, 2023
• Java

A Java Class-File API Hello World example

• Updated Mar 9, 2025
• Java

A Library to support reading and writing of java class files.

• Updated Mar 23, 2018
• Rust

The classfinder library/tool is helping Java developer to find class easily inside or outside JVM without source code provided.

• Updated Dec 14, 2022
• Java

A simple JVM, for learning purposes

• Updated Jan 30, 2026
• C++

Parse Java .class files into language-java

• Updated Dec 9, 2010
• Haskell

Test cases for unstable output of Scalac

• Updated Jan 23, 2018
• Shell

Scala version of javap - a file reader following the class file format https://docs.oracle.com/javase/specs/jvms/se17/html/jvms-4.html

• Updated Jun 28, 2022
• Scala

Generate java bytecode class files with python.

• Updated Sep 27, 2021
• Python