AppFuse is a full-stack framework for building web applications on the JVM. Open source since 2003.
Screencast and tutorial applications that show functionality in AppFuse.
Mirror of Spring Framework repository for versions up to 2.5.x
Dubbo is a distributed service framework enpowers applications with service import/export capability with high performance RPC.
Coverity Security Library (CSL) is a lightweight set of escaping routines for fixing cross-site scripting (XSS), SQL injection, and other security defects in Java web applications.
Hipster stack for Java developers. Spring Boot + AngularJS in one handy generator.