Decompiler from Java bytecode to Java, used in IntelliJ IDEA
A reverse engineering suite (decompiler, editor, debugger and more)
A Java serialization/deserialization library to convert Java Objects
A powerful text/code editor for Android
Programmer-friendly testing framework for Java and the JVM
Barcode scanning library for Java, Android
A Java library for technical analysis
tinylog is a lightweight logging framework for Java, Kotlin, Scala
A Java library used to read and extract data from NFC EMV credit cards
Autopsy® is a digital forensics platform and graphical interface
Free implementation of Play Services
Now continued as OculiX — see oculix.org
A tool for reverse engineering Android apk files
The modern Essentials suite for Spigot and Paper
The OWASP ZAP core project
Java library that allows matching many thousands of Events per second
Easily create Spring-powered, production-grade applications
Metaprogramming library to analyze and transform Java source code
RuoYi Java rapid-development platform
Type-safe HTTP client for Android and Java by Square
Make writing Java http clients easier
Java development platform built for distributed microservice apps
Java bytecode engineering toolkit
Flexible, lightweight multi-language test reporting tool
Create, edit and run self-contained source-only Java programs