ZynAddSubFX free software-synthesizer by paulnasca 2

unstable is a free pitch shifter VST plugin developed by de la Mancha. Compatible OS(s): Windows.

unstable likes to mess around with your audio pitch, with 3 subtle pitch modulation modes to simulate the unpredictable but lovable pitch instability of an old tape machine or analogue equipment. It doesn’t only do subtle though, you can also put it in ‘insane’ mode if you’d rather just FSU.


  • 3 modes of continuously random pitch modulation:
    1. Buzz – rapid, fuzzy modulation.
    2. Wobble – medium, jerky modulation.
    3. Drift – slow, gentle modulation.
  • Adjustable frequency and level for each modulation mode.
  • Master level mode to adjust overall subtlety of effect.
  • Wet / dry mix level control.
  • Insane mode – removes all subtlety and smacks your pitch up.
  • All controls mapped to MIDI CC values.
Made with SynthEdit



Tapestop free pitch-shifter by TbT

Tapestop is a free pitch shifter VST plugin developed by TbT. Compatible OS(s): Windows.

Tape Stop simulates the effect you get when you turn off a tape recorder or a turntable with the sound still on.


  • EP(vinyl) – EP is normal mode,
  • TD (Tape deck) – TD will back up the tape a bit when it stops.

Adjustable display:

  • N – normal
  • R – reverse the button.

Adjustable button:

  • T – toggle
  • D – Direct return to play when mouse button is released.

Adjustable speed:

  • Select the DOWN speed by clicking on the LEFT mouse button in the speed box, then hold and drag.
  • Select the UP speed by clicking on the RIGHT mouse button in the speed box, then hold and drag.


T-RackS CS

T-RackS CS free multi-fx | overdrive | saturation | bit-crusher | crunch | panner | pitch-shifter | phaser | flanger | eq | compressor | limiter | amp-simulator | filter by IK Multimedia

T-RackS CS is a free multi fx and overdrive and saturation and bit crusher and crunch and panner and pitch shifter and phaser and flanger and eq and compressor and limiter and amp simulator and filter VST, Audio Unit, RTAS, AAX plugin developed by IK Multimedia. Compatible OS(s): Windows 64b, macOS.

Close your eyes and picture a store full of cool, powerful processing gear including compressors, limiters, reverbs, de-essers, multiband processors, and a shelf full of vintage, legendary gear emulations. In short, a dream store for recording musicians, engineers and producers.

It is not just a fantasy. This store is real and it’s available to you 24/7. In the T-RackS 5 Custom Shop you can browse a huge collection of IK’s high-quality processing plug-ins for mixing and mastering and purchase only the ones you want, when you want them. And the best part is, you can get started for free.


  • Free version of T-RackS including the Custom Shop, the Classic EQ and basic Metering functionality.
  • Standalone workstation, plugin suite and single plugins for Audio Units, VST2, VST3 and AAX formats.
  • Custom Shop functionality lets you purchase additional modules from inside the program.
  • T-RackS shell allows for chaining of up to 16 processors.
  • Standalone integration with ARC System 2.5 processing.
  • All processors available as individual plug-ins.
  • 64-bit native support.
  • High-fidelity oversampling for high-quality audio processing through the entire signal path.
  • SCC technology coupled with IK’s unique DSM technology provides the most realistic software emulation of vintage gear to date.
  • Extremely easy to use, with style-based presets, full chain visualization, one-click single module or chain bypass, “compare” function and more.

What’s new

  • 4 new processors available for separate purchase: Master Match, Dyna-Mu, ONE, EQual.
  • Resizable*, redesigned interface and plugin GUIs.
  • Expandable broadcast-ready metering suite*.
  • Floating meters option*.
  • Chains of up to 16 processors.
  • Album Assembly section with waveform editing and metadata*.
  • Enhanced audio engine.
  • Up to 192 kHz/32-bit floating point*.
  • 4 dithering algorithms.
  • Equal gain option*.
  • Signature presets from the industry’s top engineers*.

* Features available by upgrading to T-RackS 5, T-RackS 5 Deluxe or T-RackS 5 MAX. T-RackS 5 CS supports projects up to 48kHz and features basic metering functions. Presets require specific modules which might not be part of this version of T-RackS 5. You can however download any processor for free and test them for 14 days before purchase.



SuperSpread free pitch-shifter | stereo-imaging by lkjb

SuperSpread is a free pitch shifter and stereo imaging VST, VST3, Audio Unit plugin developed by lkjb. Compatible OS(s): Windows 64b, macOS.

SuperSpread uses multiple pitch shifters to spread a signal thus allowing supersawing any input it is given.

Besides using it on any synths it is also a handy tool to create pseudo double tracking for guitars or to a lesser extend vocals. In case of guitars, it is best applied on a clean DI recording before amp simulations.

The source code is available on github.


  • V1.1.0: Update to new JUCE version.
  • V1.0.2: Fixed latency compensation in VST3 bypass.
  • V1.0.1: Added mix control (click on GUI to toggle knob), Statically linked MSVCP140.dll.
  • V1.0.0: Initial Release.



stwETCH free pitch-shifter | time-stretcher by whiteLABEL

stwETCH is a free pitch shifter and time stretcher VST plugin developed by whiteLABEL. Compatible OS(s): Windows.

stwETCH is a playable granular time-stretching / buffer repeater effect capable of stretching up to 500% normal length using granule sizes ranging from 10 to 500 ms, meaning that relatively smooth and total whack-job are both possibilities here. Further to this there are 2 pitch controls: one that controls granule playback speed, aka speed control (like tape), and one that controls pitch-shift, aka pitch (like a pitchshifter).

stwETCH was designed as a control surface playable instrument – in a similar vain to wavePLAY. It is entirely monophonic and whilst it has MIDI support, it won’t respond to any plain old note-on data. stwETCH wants nothing but CCs – even the play switch. So, play it from a control surface (or VST automation parameters) or use MIDI CC – just don’t expect it to respond to you playing the notes on a keyboard.

A mono version of stwETCH is available for free (the full version is stereo).

Made with SynthEdit


Spirit Of Keyte

Spirit Of Keyte free vocoder | pitch-shifter by RunBeerRun

Spirit Of Keyte is a free vocoder and pitch shifter VST plugin developed by RunBeerRun. Compatible OS(s): Windows.

Spirit of Keyte is a vocal effect, it has a pitch-following 2 band vocoder, and a pitch shift section in which an envelope sweeps a series of semitone values.

Made with SynthEdit



Speedster free pitch-shifter | time-stretcher by AA

Speedster is a free pitch shifter and time stretcher Audio Unit plugin developed by AA. Compatible OS(s): macOS.

Speedster is an Audio Units effect plugin that pitch shifts and time-stretches in real-time. A clever algorithm allows for controlling (and automating) pitch and speed independently.

It can also perform stereo/center separation, so that the user has independent control not only of the right and left side of the signal, but also of the center.


SpatHarmo 8

SpatHarmo 8 free pitch-shifter | time-stretcher by Acousmodules

SpatHarmo 8 is a free pitch shifter and time stretcher VST plugin developed by Acousmodules. Compatible OS(s): Windows.

SpatHarmo 8 is an Octophonic harmonizer.


  • Eight separate pith shifters.
  • Four octave pitch shift.
  • Free position of the speakers.
  • Free spatial position of each pitch shifter inside the octophonic space.
  • External audio input or integrated wave player with pitch control.
  • Stereo compatible when putting the sounds inside only two speakers.
  • Inertia parameter for smooth variations.
  • Change of the configuration by a MIDI keyboard with transition duration for slow evolutions (may take a lot of CPU).
Made with SynthEdit



SONIC STT free stutter | pitch-shifter | glitch by SONIC EMBLEM

SONIC STT is a free stutter and pitch shifter and glitch VST, Audio Unit, RTAS plugin developed by SONIC EMBLEM. Compatible OS(s): Windows, macOS.


  • Variable Stutter for Buffer.
  • 1Bar~127Beat Repeat (Synchronize with BPM).
  • Infinity Pitch Shift.
  • Reverse Repeat.
  • Click Noise Reduction.
  • Support Automation.
  • UI for Touch Device.

{See video at top of page}

Made with Max/MSP for Pluggo



SONIC SPN free glitch | lfo | pitch-shifter by SONIC EMBLEM

SONIC SPN is a free glitch and lfo and pitch shifter VST, Audio Unit, RTAS plugin developed by SONIC EMBLEM. Compatible OS(s): Windows, macOS.


  • Turntable Spin Shift with LFO.
  • 50%~200% Shift Range.
  • 6 Types Waveform (±SAW ±TRI ±SQU).
  • 16Bar~8*Beat LFO Rate (Synchronize with BPM).
  • LFO Phase is retriggered when change from Rate0 (also Host Transport Start).
  • Click Noise Reduction.
  • Support Automation.
  • UI for Touch Device.

{See video at top of page}

Made with Max/MSP for Pluggo