Undum : A client side framework for hypertext interactive fiction games
Phalcon PHP : Phalcon is a web framework implemented as a C extension offering high performance and lower resource consumption.
Tone.js : Tone.js is a Web Audio framework for creating interactive music in the browser. The architecture of Tone.js aims to be familiar to both musicians and ...
Foundation : An easy to use, powerful, and flexible framework for building prototypes and production code on any kind of device.
LÖVE is a framework for making 2D games in the Lua programming language. LÖVE is totally free, and can be used in anything from friendly open-source hobby projects, to evil, closed-source commercial ones.