A list of some interesting Open Source (mostly) Javascripts that hold good possibilities for knowledge production and publishing.
Motion sensing requiring no special hardware, only a speaker and mic! Also, runs in the browser.
PEX is a set of JavaScript libraries for computational thinking in Plask/Node.js and WebGL in the browser.
Vivus is a little JavaScript class (little because it's lightweight and have no dependency) to make drawing animation with SVGs in a webpage.
ARGOPd is made of real-time sound and visual synthesis modules. A module is a Pure Data (Pd) patch. ARGOPd is for users who have never programmed with Pure Data.