jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
Dropsource - Mobile development platform for building native iOS & Android apps
CUBA.platform - A Full Stack Enterprise Java Framework with lots of out of the box functionality and amazing...
GoodBarber - GoodBarber is a mobile app creation platform.