grid

>[Drag and drop library for two-dimensional, resizable and responsive lists.][link]

I’ve seen this done before but not so efficiently, responsively, and with no dependencies. (via [Jesper][jesp])

[link]: https://github.com/ubervu/grid “uberVU/grid”
[jesp]: http://waffle.wootest.net “Waffle, Jesper’s blog.”