Decent Sampler

Now that DS has microtuning support (via SCL and KBM files), I'll recomend this wonderful sampler software everywhere. It has import from SFZ and EXS formats, and I gladly use SFZ import for many SFZ libraries I've already had. Though keep in mind DS doesn't import complicated SFZ definitions (with ARIA controls or multiple files, I think). Also for now DS only supports WAV and AIFF samples right now, but it's probable it would support FLAC in the future.

The format of sample libraries is helpfully documented, for those who want to make their own libraries. (Or, like with SFZ, one can look at existing libraries to sus out what do write.). Also it has capabilities for quite interesting effects to put your samples through, like convolution with impulse responses (IR)—so you can make custom reverbs or shimmering or whatnot.

Microtuning support implementation is the first proper one present in a freeware sampler: there's a toggle in the tuning menu to switch between the Sforzando/Sfizz-like mode (samples are picked depending on a MIDI note) and the arguably more correct mode where samples are picked depending on the actual frequency to which a note is retuned.