Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
CUBA.platform - A Full Stack Enterprise Java Framework with lots of out of the box functionality and amazing...