Corkscrew is a free pitch shifter and time stretcher VST, Audio Unit plugin developed by Anarchy Sound Software. Compatible OS(s): Windows, macOS.
Mixes together multiple pitch-shifts of the input signal, increasing or decreasing their pitches in parallel, and fading them in/out at the extremes of their range.
This creates the illusion of a sound that seems to continually rise or fall, but doesn’t actually change in average pitch.
http://anarchysoundsoftware.co.uk/anarchysoundsoftware/