Instruments, effects, and hidden gems

Free VST plugins

Discover free Windows audio plugins by sound, instrument, effect, format, popularity, and the creative tools producers use together.

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Oct 7, 2026
VeloScaler plugin interface
CodeFN42

VeloScaler

VeloScaler by CodeFN42 is a free MIDI effect plugin for Windows that lets you adjust and scale MIDI note velocities with up to 5 customizable bands.

VST2MIDI effects
NoteMapper plugin interface
CodeFN42

NoteMapper

NoteMapper by CodeFN42 is a free MIDI utility plugin that maps incoming MIDI notes to up to three different notes across multiple channels, enabling complex triggering setups like multi-sampler drum patterns.

VST2MIDI tools
MidiKeySwitcher plugin interface
4drX

MidiKeySwitcher

MidiKeySwitcher lets you assign 2-key switches to select MIDI channels and send program and bank change messages directly from your MIDI keyboard, eliminating the need for a mouse when browsing plugin presets.

VST2Uncategorized
MIDI-Transformer plugin interface
Austen

MIDI-Transformer

MIDI-Transformer by Austen lets you transform and reroute incoming MIDI signals within your VST chain on Windows 64-bit systems.

VST2MIDI tools
MIDI Monitor plugin interface
Robin Schmidt

MIDI Monitor

MIDI Monitor by Robin Schmidt displays incoming MIDI messages in real time. It is available as both instrument and effect plugin versions to ensure host compatibility.

VST2MIDI tools
Wind Chimes plugin interface
ToneCarver

Wind Chimes

Wind Chimes by ToneCarver generates MIDI notes simulating wind chime strikes influenced by wind conditions, optionally sending control change messages for system energy.

VST2MIDI generators

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VeloScaler plugin interface
VeloScalerCodeFN42 · VST2
One click
NoteMapper plugin interface
NoteMapperCodeFN42 · VST2
One click
MidiKeySwitcher plugin interface
MidiKeySwitcher4drX · VST2
One click
MIDI-Transformer plugin interface
MIDI-TransformerAusten · VST2
One click
MIDI Monitor plugin interface
MIDI MonitorRobin Schmidt · VST2
One click
Wind Chimes plugin interface
Wind ChimesToneCarver · VST2
One click

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Phobos plugin interface
B Serrano

Phobos

Phobos is a free FM synthesizer featuring a phase distortion oscillator as modulator, dual LFOs, a modulation envelope, chorus effect, and switchable mono/poly mode with glide control.

VST2Synths
Phadex plugin interface
Quilcom

Phadex

Phadex by Quilcom is a free phase distortion synthesizer plugin for Windows. Explore Casio's phase distortion synthesis technique with enhanced controls in this VST2 instrument.

VST2Synths
Oxe FM Synth plugin interface
Oxe Software

Oxe FM Synth

Oxe FM Synth is a free 8-operator frequency modulation synthesizer offering multitimbral support with 16 MIDI channels, flexible modulation options, and built-in global reverb and delay effects.

VST2Synths
OctaSine plugin interface
Joakim Frostegard

OctaSine

OctaSine is a 4-operator FM synthesizer featuring flexible routing and detailed control over volume, panning, modulation index, feedback, and envelope parameters. It includes frequency modifiers and a white noise toggle for sound design versatility.

VST2Synths
MObells plugin interface
Stardust Audio

MObells

MObells is a free FM synthesizer by Stardust Audio designed to create bell-like sounds such as music boxes and church bells. It includes presets for FL Studio and FXP format.

VST2Synths
Lizard plugin interface
Krakli

Lizard

Lizard by Krakli is a wild and abrasive FM synthesizer offering full Envelope LFO control over all modulators for complex sound design.

VST2Synths
K200 plugin interface
Krakli

K200

K200 by Krakli is a 4 operator FM synthesizer plugin for Windows.

VST2Synths
HITxx plugin interface
Acquit Music

HITxx

HITxx by Acquit Music is a free Frequency Modulation synthesizer plugin for Windows in VST2 format.

VST2Synths
GTG FM 4 plugin interface
GTG

GTG FM 4

GTG FM 4 is a compact and user-friendly FM synthesizer featuring three operators with dual mixable signal paths, allowing for versatile sound creation on Windows 32-bit VST hosts.

VST2Synths
GSS-370 plugin interface
SynthIV

GSS-370

GSS-370 is an approximate emulation of the Yamaha PSS-370 synthesizer with added circuit-bending effects, available as a free 32-bit VST plugin for Windows.

VST2Synths
FMera plugin interface
Wollo

FMera

FMera is a 32-voice polyphonic synthesizer combining FM synthesis with a wave player. It features two oscillators per voice and includes a female voice sample triggered with the FM sound.

VST2Synths
FM-Four plugin interface
ToneBytes

FM-Four

FM-Four is a free VST2 synthesizer plugin for Windows that emulates 4-operator FM synthesis with eight algorithms and multiple waveforms to create rich, harmonic timbres.

VST2Synths
easy-fm plugin interface
easytoolz

easy-fm

easy-fm by easytoolz is a 4 operator FM synthesizer with contour and resonance controls, dual ADSR envelopes, an 8-step sequencer, and six waveforms for versatile sound design.

VST2Synths
DoubleSix plugin interface
Odosynths

DoubleSix

DoubleSix is a free 6-operator FM synthesizer plugin featuring 32 DX7 and 16 4-operator algorithms. Each operator includes a customizable envelope with up to 8 stages and selectable sustain points.

VST2Synths
Donk Machine plugin interface
Hinton and Fairchild

Donk Machine

Donk Machine is a free FM synthesizer plugin by Hinton and Fairchild designed to create the classic Donk sound popular in Deep, Bouncy, and Spanish House as well as Russian Pumping genres. It features 5 oscillators, smooth reverb, filters, and EQ with distortion for versatile sound shaping.

VST2Synths
DirtyGirl plugin interface
Opulent Audio

DirtyGirl

DirtyGirl by Opulent Audio is a PWM synthesizer featuring dual SE oscillators with FM and PWM capabilities, two SV filters, dirt, grains, reverb effects, versatile modulation, and an arpeggiator. Supports mono/poly modes.

VST2Synths
DigiReactor plugin interface
Jasper Vermorgen

DigiReactor

DigiReactor by Jasper Vermorgen is a Windows-only FM synthesizer featuring three oscillators, two LFOs, three envelopes, and an array of built-in effects including reverb and delay.

VST2Synths
tonus Little Wing plugin interface
KBplugs

tonus Little Wing

tonus Little Wing by KBplugs is a free VST2 modular synthesizer plugin for Windows inspired by the ARP 2500’s design. It delivers a nod to the classic hardware with no presets included.

VST2Synths
The free-plugin pulseUpdated Oct 7, 2026

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