Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Light, fluffy, and always free - The AWS Local Emulator alternative

Generate diagrams from textual description

Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising performance.

Java Native Access

Test Automation Made Simple

jOOQ is the best way to write SQL in Java

Apache Camel is an open source integration framework with 350+ connectors. Write routes in Java, YAML, or XML. Run on Spring Boot, Quarkus, or standalone. Apache License 2.0.

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID…

TLC is a model checker for specifications written in TLA+. The TLA+Toolbox is an IDE for TLA+.

Java library for creating text-based GUIs

JLine is a Java library for handling console input.

SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a spac…

Native JVM WebAssembly runtime

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

ActiveJ is an alternative Java platform built from the ground up. ActiveJ redefines core, web and high-load programming in Java, providing simplicity, maximum performance and scalability

Vaadin Flow is a Java framework binding Vaadin web components to Java. This is part of Vaadin 10+.

ARCHIVED: Bytecode to source converting Java & Kotlin code into JavaScript, C++, D, C#, PHP, AS3, Dart and Haxe and run it everywhere. Also use JVM code in your favourite language as a library.

The Jolie programming language

Categorical Query Language IDE

🐒 Bytecode-level fault injection for the JVM.

OpenCCG library for parsing and realization with CCG

This is the primary repository for the source code of the OpenJML project. The source code is licensed under GPLv2 because it derives from OpenJDK which is so licensed. The active issues list for O…

Datalog that's as easy as ABC.