Pitch

GSnap is an auto-tune effect. It can be used subtly to correct the pitch of a vocal, or, with more extreme settings, to create a robot-voice effect.


http://www.gvst.co.uk/gsnap.htm

KeroVee is a Pitch-Correction plug-in that works as a VST effect. It can pitch-detect and retune to specified scales or MIDI notes. 'Bypass' and 'SubTone' mix are also available.


http://www.g200kg.com/en/software/



Son of a Pitch 1.1
The pitch of the incoming signal is controllable via the pitch knob or by a sync to host LFO. The pitch knob ranges from +3 octaves to -3 octaves of the original pitch. The effect also features an LFO controlled filter section. There are 3 filters to choose from, 2 SV filters and a butterworth filter. The filter section can be bypassed sending the dry signal straight to the pitch bender.

http://downloads.fyxm.net/Son-of-36802.html