Nativator - Convert any web app to native mobile app fast & easy. Nativator.
Qt - Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.
Website 2 APK Builder - Convert your HTML, CSS, JS and all other web content into an Android App within seconds.
FLTK - Fast Light Toolkit - Fast Light Toolkit (FLTK)
Median.co - Median.co (formerly GoNative.io) is the industry leading solution used to build iOS and Android webview apps. Get started for free and turn any website into a full-feature mobile app in seconds.
GTK - GTK+ is a multi-platform toolkit for creating graphical user interfaces.