Open Source Audio Plugins

Free VST3 plugins for Windows, Linux & macOS. Built with pure Steinberg SDK. No frameworks, no bloat, no secrets.

100% Open Source Windows, Linux, macOS Pure VST3 SDK

Plugins

Professional quality, completely free, fully open source

WetDelay

Available

Authentic 80s rack-style digital delay. 100% wet output with vintage 12-bit character and gritty warmth.

WetDelay Plugin Screenshot
  • 6 delay times (20ms to 400ms)
  • 24kHz internal rate, 12-bit quantization
  • Stereo with 1% channel crosstalk
  • Real-time input/output metering
Download Source

WetReverb

Available

Authentic 80s rack-style digital reverb. 100% wet output with vintage 12-bit character and Schroeder-style diffusion.

WetReverb Plugin Screenshot
  • 5 reverb modes (Room, Plate, Hall, Cathedral, Cosmos)
  • 24kHz internal rate, 12-bit quantization
  • Stereo with channel crosstalk
  • Real-time input/output LED metering
Download Source

WetEQ

Available

Authentic British console equalizer. Desk-style saturation, channel crosstalk and gain-dependent Q.

WetEQ Plugin Screenshot
  • 4 bands (LF shelf, LMF bell, HMF bell, HF shelf)
  • HPF, LPF and input GAIN, 17 stepped positions per control - hold Shift for four times finer
  • Host sample rate, no downsampling
  • Real-time L/R input and output LED metering
Download Source

WetCompressor

Available

Authentic 76-style FET compressor, modelled as the circuit. Feedback detector, a gain cell that bottoms out, and distortion that rises with the compression.

WetCompressor Plugin Screenshot
  • 3 time constants (Fast, Normal, Slow)
  • Stepped INPUT and OUTPUT, 21 positions each, fixed threshold and ratio
  • Host sample rate, no downsampling
  • Real-time input, gain reduction and output LED metering
Download Source

WetChorus

Coming Soon

Authentic 1970s combo-amp chorus and vibrato, on its own. Modelled bucket-brigade delay line with its compander, clock and noise floor.

  • Its 2-position VIB/CHORUS switch, made continuous (19 positions)
  • Stepped SPEED, DEPTH and MODE, hold Shift for four times finer
  • Host sample rate, no downsampling
  • Real-time input and output LED metering

WetWeld

Coming Soon

Authentic desk-style mix-bus chain, welded into one window. Per-stage saturation, noise and channel crosstalk.

  • 8 stages in 1 fixed chain (input GAIN, HPF, COLOR, LF shelf, HF shelf, COMPRESS, WIDEN, output GAIN)
  • 10 stepped controls, hold Shift for four times finer
  • Host sample rate, no downsampling
  • Real-time input, gain reduction and output LED metering

Why WET VST?

A different approach to plugin development

Fully Open Source

Most free plugins are closed-source binaries. WET plugins give you the complete source code under a permissive license. Learn, modify, contribute.

Pure VST3 SDK

Built directly on the official Steinberg VST3 SDK. No JUCE, no third-party frameworks. Clean, minimal, and easy to understand.

Complete Documentation

Every plugin includes full build instructions using only free tools: Visual Studio Build Tools, CMake, and Git. No paid licenses needed.

Cross-Platform

One binary for all platforms. Windows, Linux, and macOS (Intel & Apple Silicon) supported from day one. Universal VST3 from a single build.

Stay informed

WetChorus and WetWeld are on the way. Leave an address and you will hear when a WET plugin is released or updated.

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Support Development

WET plugins are free forever. If they help your music, consider buying me a coffee to support continued development.

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