Soot - A Java optimization framework

Java regular expressions made easy.

https://openjdk.org/projects/code-tools/jmh

A Java entity system inspired by Ash & Artemis.

A Persistent Java Collections Library

A JVM assembler for the modern age

Datalog with support for SMT queries and first-order functional programming

An inter-procedural data-flow analysis framework using value-based context sensitivity

📚 a modular easy to use Library for Static Analysis aiming at multi-language analysis