Dropbox, Facebook, Google, Slack, Stripe and more all use Framer.js to prototype and experiment with interaction design.
If you've never written CoffeeScript (or JavaScript) before, you might find yourself climbing up a steep learning curve before you reach the peak of productivity. CoffeeScript for Framer.js will get you up to speed on CoffeeScript and the basic programming principles you'll need to bring your ideas to life.