Bootstrap - Simple and flexible HTML, CSS, and JS for popular UI components and interactions
Bizness Apps - Create your own app or become a reseller and build apps for others
Ionic - Ionic is a cross-platform mobile development stack for building performant apps on all platforms with open web technologies.
GoodBarber - GoodBarber is a mobile app creation platform.
Kendo UI - Fast, light, complete: 70+ jQuery-based UI widgets in one powerful toolset
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.