JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
Lua - Powerful, fast, lightweight, embeddable scripting language
Allegro - Allegro 4 and Allegro 5 are cross-platform, libraries mainly aimed at video game and multimedia...
CoffeeScript - Unfancy JavaScript
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.
Vely - Vely is a general-purpose framework for C programming language, especially well suited for web applications.