Sometimes(very often!) we need to add effects on our voice recording. To make it sound better, to make it sound thicker, or just to maker it sound incredible!
For widening/thickening, or making choir like voices, you can use : chorus, voice multiplier, voice doubler, stereo wideners.
For radical changes or special FX, you can use harmonizer / pitch changing, genre changer, pitch correction / autotune.
This nifty free VST features a pitch knob that can be tweaked from a range of +3 full octaves to -3 octaves of the original pitch. There is more tweakage to be had as the pitch of the incoming signal can be controlled via a pitch knob or a sync to host LFO. Graillon Free Edition gets the Pitch Shifting and Pitch Correction. Graillon Full Edition gets everything. Graillon is the result of a long search for new kinds of vocal effects. Its processing adds 23ms of latency, which is not instant but competitive when compared to other pitch-shifters. First, do no harm.
Here’s a top 5 of free VST effects for changing the voice :
1) Azurite multi voice chorus VST
This great chorus can work on many type of sources : guitar, voice, etc..
It works nicely for voice, it’s not too hard/harsh and does a good job on mono inputs for spreading voices and give a stereo effect.

information & download @ http://distorqueaudio.com/plugins/azurite.html
Dry voice :
https://blog.wavosaur.com/wp-content/uploads/2014/03/Katherine-Ellis-dry.mp3
Voice with chorus!
https://blog.wavosaur.com/wp-content/uploads/2014/03/Katherine-Ellis-chorus.mp3
2) ADT – Artificial Double Tracking
This VST has no GUI
When you can’t record two takes for doubling your voice, you can gor for the artificial double tracking technic! The Beatles did it, and now you can too.
Voice doubling ahs never been so easy.
Download here : http://www.vacuumsound.de/plugins.html
3) Emonizer Micro Pitch Shifter effect
Emonizer VST
This free VST effect is intended for thickening, it’s a “one trick pony”, it’s in fact a micro pitch shifter, that add detuned voices, it creates a wider sound. Works also for other sounds than voice!
download it now ! => http://music.service-1.de/html/wok_emonizer_vst_micro_pitch.html
4) g200kg KeroVee & roVee
Here we go now for a more radical effect !
With this one you can change the nature/type/genre of the voice, make it from female to male, or from female to male. KeroVee is a pitch correction plugin, it can also do the “autotune” effect.
Information and free download @ http://www.g200kg.com/en/software/kerovee.html
Normal dry voice
https://blog.wavosaur.com/wp-content/uploads/2014/03/ultra-nate-normal.mp3
Maxi chorused multiplied choir-i-fied voice !
https://blog.wavosaur.com/wp-content/uploads/2014/03/Ultra-Nate-multiplied.mp3
female voice
https://blog.wavosaur.com/wp-content/uploads/2014/03/simone-normal.mp3
from female to male ! genre changing
https://blog.wavosaur.com/wp-content/uploads/2014/03/simone-female-to-male.mp3
Maxi super chorus : voice multiplier !
https://blog.wavosaur.com/wp-content/uploads/2014/03/Simone-voice-multiplier.mp3
5) ag-works chorus ch-2
Chorus CH-2 VST

Here, at Wavosaur, we love the monstachorus VST by Betabugs, but i thought the Chorus CH-2 is lesser known, and deserve some exposure. It’s like having 4 independant chorus you can tweak in parallel.
Pitch Adjuster Free Vst Autotune
download for free @ http://ag-works.net/plugins.ch2.htm