Dex to Java decompiler

A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

smali/baksmali

The modern Java bytecode editor

Android virtual machine and deobfuscator

Unofficial mirror of FernFlower Java decompiler (All pulls should be submitted upstream)

TCP/UDP Non-HTTP Proxy Extension (NoPE) for Burp Suite.

A collection of reverse engineering challenges for learning about the Android operating system and mobile security.

Dalvik Monitoring Framework for CuckooDroid

ZXing ("Zebra Crossing") barcode scanning library for Java, Android