Meteor: A Remarkable Platform That Makes Building Web Apps Much Easier

Meteor offers significant improvements over the old ways of writing apps.

Built around Smart Packages (little bundles of code) by a seven person San Francisco based team, Meteor is open-source software licensed under the MIT license. This means users are free to use Meteor without restriction for both open-source and closed-source applications. 

Thanks to Mike Knowlton of storycode.org for the link.