Vue.js - Reactive Components for Modern Web Interfaces
GoodBarber - GoodBarber is a mobile app creation platform.
Deku - Functional view library for building UI components as an alternative to React
Bizness Apps - Create your own app or become a reseller and build apps for others
Polymer - Polymer is a library that uses the latest web technologies to let you create custom HTML elements.
Dropsource - Mobile development platform for building native iOS & Android apps