OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
Tcat Server - The best place to deploy your Spring applications
Apache Sling - Apache Sling is a REST based web framework,
WEBCON - Low-code BPM / RAD platform for Microsoft SharePoint
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.