Oracle Mobile Application - Oracle Mobile Application framework or Oracle Mobile Application development platform is a hybrid mobile framework for rapidly developing single source applications for many platforms and devices.

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.

AppGyver Composer - Visual enterprise-grade low code mobile app builder

JUCE - JUCE is a wide-ranging C++ class library for building rich cross-platform applications and plugins...

OutSystems - Build Enterprise-Grade Apps Fast.

FLTK - Fast Light Toolkit - Fast Light Toolkit (FLTK)