Respiro

Respiro comes with a wide range of tones. It is very strong at reed-type sounds, but has quite a bit of range with edge-blown flutes, brassy sounds, harmonica and even bass tones. You have a fixed number of "instruments" from the developer (who releases new instruments with subsequent udpates)-- but the selection is good. And, you can create your own variations of sounds using the "Macro" controls.

As of this release the included sounds aren't organized very well, but there are user tags that allow you access a sorted list. You can also edit the response, timbre and other qualities of the sound to create your own "variants" of the original sound. It is versatile, especially with regard to controls. The mod matrix is excellent. It also has a great reverb, compressor, vibrato & tremolo, and other important expressive features that sound very musical. There is a micro-tuning feature that allows you to tune the 12 notes of equal temperament for one octave (repeating octaves).

There are very few woodwind modeling synths out there. Reaktor's Silverwood, is one example of a synth that tries to replicate a specific real woodwind instrument. Where Respiro doesn't strive to emulate a specific woodwind instrument, it is more aimed at creating a diverse set of new yet real-sounding expressive instruments.

I've really enjoyed getting to know this amazing sounding virtual wind instrument collection!.