No-Library (pure JS), HTML, CSS, JavaScript
D3 3.x, HTML, CSS, JavaScript
author(s): Kacper Madej
http://bl.ocks.org/chucklam/f3c7b3e3709a0afd5d57
author(s): Torstein Hønsi
Only with Moz prefix for now. But awesome feature that will make things so much easier. Sometimes. I guess it's not cheap.
Added comments for understanding http://alignedleft.com/tutorials/d3/making-a-bar-chart
waterfall series chart using d3.js