MadShifta is an "ultrafast and lofi pitchshifter", where the pitch of the audio is changed in realtime while the tempo is preserved.
You can adjust the pitch in semitones (+/- 24 semitones) and
with finetuning. Furthermore a delay line with feedback is
included and the obligatory LP/HP filter with resonance.
Extra special feature: you can use MIDI note messages to pitch
the audio in realtime up or down, relatively to a root key.
Furthermore a randomizer, dry/wet and output adjustments enhance
Freeware by SmartElectronix