ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Famous Engine - The Famous Engine is a free and open source JavaScript rendering engine.
Touch GIS - The premier tool for mobile field data collection and visualization. Available for iPhone & iPad.
Chart.js - Easy, object oriented client side graphs for designers and developers.
Cone - A delightful and easy to use color picker for the real world