Meteor - Meteor is a set of new technologies for building top-quality web apps in a fraction of the time.
Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
Horizon - Horizon is a realtime, open-source backend for JavaScript apps.
Freedom.to - Freedom is a productivity hack that lets you block apps, websites or the entire Internet on iPhones, iPads, Windows and Mac computers.
WoofJS - Easy-to-learn JS graphic framework
Stay Focused - More suitable with Google Chrome, this service enables you ensure you do not waste precious time on updating Facebook status or chatting with people.