I'm developing Computer Aided Manufacturing system in the browser (chrome Application for the USB connexion). And I developed the embedded code for the controller too. https://github.com/nraynaud/webgcode http://nraynaud.github.io/webgcode/ (for a taste of g-code)

last week I worked on some pocketing and lettering code : http://nraynaud.github.io/webgcode/text.html (it's a excuse to introduce Ember into the codebase and learn it). The display is multi Level Of Details (it's visible when scrolling quickly), and the computation is done with a worker pool.