Codefield - Tools for developers, designers and photographers
OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Spring Framework - The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.