Spitfish

Spitfish free de-esser by digitalfishphones

Spitfish is a free de esser VST, Audio Unit plugin developed by digitalfishphones. Compatible OS(s): Windows 64b, macOS.

Spitfish is a dead-easy to use de-esser, aimed mainly at mono or stereo vocal tracks. Just like classic analog de-essers, this unit dynamically filters out harsh, annoying s-like sounds that would otherwise ‘spit’ in your face.

http://www.digitalfishphones.com/

Modern Plugins

Modern Plugins free multi-fx | de-esser | expander | compressor | eq | exciter | enhancer | reverb | limiter | amp-simulator by Antress

Modern Plugins is a free multi fx and de esser and expander and compressor and eq and exciter and enhancer and reverb and limiter and amp simulator VST plugin developed by Antress. Compatible OS(s): Windows.

The Antress Modern Plugins consists of several free VST effect plug-ins for Windows.

v4.85 includes:

  1. Modern Analoguer.
  2. Modern Amplifier.
  3. Modern BlackDragon.
  4. Modern Compressor.
  5. Modern Deathcore.
  6. Modern DeepPurple.
  7. Modern DeEsser.
  8. Modern Equalizer.
  9. Modern Exciter.
  10. Modern Expander.
  11. Modern FireChainer.
  12. Modern FlashVerb.
  13. Modern Limiter.
  14. Modern LostAngel.
  15. Modern Premier.
  16. Modern SeventhSign.
  17. Modern Spacer.
  18. Modern Splitter.
  19. Modern Vacuumer.
Made with SynthMaker

https://antress.blogspot.co.uk/

Lisp

Lisp free de-esser by Sleepy-Time DSP

Lisp is a free de esser VST, VST3 plugin developed by Sleepy-Time DSP. Compatible OS(s): Windows 64b.

Lisp (Level-Independent Sibilance Processor) is a free de-essing tool for your digital audio workstation that works regardless of the input level and requires no frequency setting. Simply set your reduction amount and Lisp will automatically detect the “ess” sounds in your audio track, turning them down with highly transparent results.

http://www.sleepytimedsp.com

De-ess

ZynAddSubFX free software-synthesizer by paulnasca 2

De-ess is a free de esser VST plugin developed by mda. Compatible OS(s): Windows, macOS.

mda De-ess is a high frequency dynamics processor.

http://www.mda-vst.com/