Spirit Canyon Audio recently released Ozone 2, a free distortion VST effect for Windows based upon the original free Ozone VST released under the name PalancarWare, but now includes a proper GUI as well as improved distortion algorithms.
Ozone 2 offers three different distortion models (Squelch, Squash, and Saturate), along with realtime controls for the input gain, the amount of distortion applied ("Blast"), and an algorithm-specific parameter that affects the sound of the distortion ("Zeta").
There is no attempt to emulate particular equipment nor even to sound like analog distortion; instead, Ozone 2 implements novel distortion and waveshaping algorithms that produce unusual distortion sounds.
