Vaadin 6, 7, 8 is a Java framework for modern Java web applications
Browser automation framework and ecosystem
Distributed tracing without code changes
Macro-oriented asynchronous web-framework written in Nim
A set of tools that keep Java sweet
Thymeleaf is a modern server-side Java template engine for web
Kafka Web UI
Java CMS that delivers smartphone simplicity on an enterprise scale
Elide is a Java library that lets you stand up a GraphQL/JSON-API
Hawtio web console helps you manage your JVM stuff and stay cool
Internet Archive's open-source, web-scale, web crawler project
Scouter is open source APM (Application Performance Management) tool
Eclipse Tyrus is the open source JSR 356 - Java API for WebSocket
Comprehensive programming and configuration model for modern apps
Java/JavaFX/Kotlin Game Library (Engine)
A scalable web crawler framework for Java
Library for extracting streaming site data without official APIs
Open source enterprise search server for websites, files, and data
The SpotBugs plugin for security audits of Java web applications
A Minecraft mapping tool that creates 3D models of your Minecraft
Web-based SSH console that centrally manages administrative access
Simple library for building production-ready RESTful web services
Clojure library for fast JSON encoding and decoding
Fast, Flexible & Free Software to scale your Business
An extensible Java library for HTTP request and response logging