Caniuse command line tool

simple tool to count SLOC (source lines of code)

rewrite of the CoffeeScript compiler with proper compiler design principles and a focus on robustness and extensibility

An HTML5 online audio editor (BUGGY and not in development)

Tool for drawing diagrams on a grid, combining grids of SVGs into a big SVG figure

Runtime type annotations for CoffeeScript (and JavaScript too!)