Alexei Boronine — original idea, JavaScript implementation, Stylus plugin, this website, various packaging and testing.
Martin Mitáš — C implementation.
Cameron Little — Sass implementation.
Carlos Cabo — PHP implementation.
Florian Dormont — Haxe implementation.
lahwran — new Java implementation.
Mark Wonnacott — original Lua implementation, C# implementation.
Manuel Gómez — PHP testing.
S. Clay Smith — Swift implementation.
Pimm Hogeling — original Java implementation.
Radu-Bogdan Croitoru — Ruby implementation.
Rob McGinley — Python implementation.
Roger Tallada — Objective-C implementation.
Rory O’Kane — fixes and improvements to the color picker demo on the homepage.