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No rocket science ;)
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No rocket science ;)

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117 stars written in Java
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High Performance Inter-Thread Messaging Library

Java 18,134 3,961 Updated Apr 2, 2025

Very spicy additions to the Java programming language.

Java 13,347 2,462 Updated Oct 19, 2025

Continuous Inspection

Java 10,110 2,137 Updated Dec 16, 2025

A proof-of-concept tool for generating payloads that exploit unsafe Java object deserialization.

Java 8,650 1,848 Updated Dec 4, 2025

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

Java 8,537 1,775 Updated Dec 15, 2025

A programmer-oriented testing framework for Java — ⚠️ maintenance mode

Java 8,522 3,285 Updated Nov 26, 2025

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Java 7,855 1,800 Updated Dec 15, 2025

An annotation processor for generating type-safe bean mappers

Java 7,576 1,009 Updated Aug 30, 2025

OWASP dependency-check is a software composition analysis utility that detects publicly disclosed vulnerabilities in application dependencies.

Java 7,353 1,388 Updated Dec 17, 2025

GoCD - Continuous Delivery server main repository

Java 7,344 981 Updated Dec 17, 2025

A tool for mocking HTTP services

Java 7,084 1,494 Updated Dec 17, 2025

⚠️ Processing moved to processing/processing4 ⚠️

Java 6,498 1,478 Updated May 18, 2025

Apache Groovy: A powerful multi-faceted programming language for the JVM platform

Java 5,404 1,916 Updated Dec 17, 2025

Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps …

Java 5,253 447 Updated Oct 30, 2025

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Java 5,039 882 Updated Jun 4, 2024

Integration with Netflix OSS components

Java 4,948 2,466 Updated Dec 16, 2025

Fork of tagtraum industries' GCViewer. Tagtraum stopped development in 2008, I aim to improve support for Sun's / Oracle's java 1.6+ garbage collector logs (including G1 collector)

Java 4,610 991 Updated Dec 6, 2025

H2 is an embeddable RDBMS written in Java.

Java 4,564 1,279 Updated Nov 25, 2025

Process Orchestration Framework

Java 3,938 727 Updated Dec 18, 2025

The Enterprise-ready testing and specification framework.

Java 3,621 477 Updated Dec 17, 2025

Java annotation processor to create immutable objects and builders, for records too. Sweep boilerplate code under the rug!

Java 3,536 290 Updated Dec 16, 2025

Repo of the Open Source Android library : RoboSpice. RoboSpice is a modular android library that makes writing asynchronous long running tasks easy. It is specialized in network requests, supports …

Java 2,935 541 Updated Jan 14, 2018

Replicate your Key Value Store across your network, with consistency, persistance and performance.

Java 2,920 482 Updated Dec 16, 2025

Cucumber for the JVM

Java 2,788 2,023 Updated Dec 17, 2025

Java library for creating text-based GUIs

Java 2,503 267 Updated Jul 18, 2025

Dozer is a Java Bean to Java Bean mapper that recursively copies data from one object to another.

Java 2,110 484 Updated Jul 12, 2025

Asciidoc Editor and Toolchain written with JavaFX 21 (Build PDF, Epub, Mobi and HTML books, documents and slides)

Java 2,011 301 Updated Sep 23, 2025

Spoon is a metaprogramming library to analyze and transform Java source code. 🥄 is made with ❤️, 🍻 and ✨. It parses source files to build a well-designed AST with powerful analysis and transformati…

Java 1,880 370 Updated Dec 17, 2025

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation sandbox project 🚀

Java 1,765 300 Updated Dec 17, 2025

Unleash the power of Java - JBang Lets Students, Educators and Professional Developers create, edit and run self-contained source-only Java programs with unprecedented ease.

Java 1,686 179 Updated Dec 13, 2025
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