For an introductory tutorial on how to use Jenkins
Simple Binary Encoding (SBE) - High Performance Message Codec
A barebones WebSocket client and server implementation
Testcontainers is a Java library that supports JUnit tests
Mirror of Apache Struts
Simple library for building production-ready RESTful web services
Java/JavaFX/Kotlin Game Library (Engine)
The OWASP ZAP core project
Scouter is open source APM (Application Performance Management) tool
The official AWS X-Ray Auto Instrumentation Agent for Java
The official AWS X-Ray Recorder SDK for Java
Light-weight workflow and business process management pltaform
SQLite JDBC Driver
Web application that allows you to perform operations on PDF files
A scalable web crawler framework for Java
Comprehensive programming and configuration model for modern apps
An extensible Java library for HTTP request and response logging
Build cross-platform native progressive web apps for iOS and Android
Thymeleaf is a modern server-side Java template engine for web
Java enterprise application development framework
Kafka Web UI
Applications with modular architecture
Build great things at any scale
Skript is a Bukkit plugin which allows server admins