Free: The Hat With The Phat
A free sample library of a giant hi-hat made up of two ride cymbals. Because we can. Six degrees of openness with bow, edge and bell hits for each, and four or five velocity layers. Chiks with four velocity layers, splashes and clutch drops with two velocity layers. Pedal return and clutch raise noises. All with four round robins. 356 total samples, additionally duplicated as another set of pitch-shifted files. Somehow, this whole thing adds up to a download larger than 600 MB, which can be downloaded using the link above.
Open source, released under GPL 3 license. Requires Plogue Sforzando 1.967 or newer.