Every module. Playable right here.

Instruments, effects, and MIDI generators — each one running in the browser before you decide anything.

Open any module and it starts making sound on its own page. Use your keyboard, plug in a MIDI controller, sing into your mic, or run our guitar take through it. When one earns a place in your sessions, download the VST3 — same code, same sound. Nothing here asks for an account.

OSC Mini

Available

A small subtractive synth with nothing to hide.

Instruments

Runs onlineVST3

KeyboardMIDIDemo phrase

OSC-1

Available

The full synth, taken apart. Every stage is its own module.

Instruments

Composable — 11 stagesRuns onlineVST3

KeyboardMIDIDemo phrase

Oscillator

Available

Two tone generators and the interval between them.

Instruments

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phrase

Noise

Available

The layer that gives an attack its edge.

Instruments

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phrase

Filter

Available

The knob everybody reaches for first.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar take

Envelope

Available

Four numbers that decide whether it is a pluck or a pad.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phrase

LFO

Available

A slow wave pointed at something.

MIDI & Modulation

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phrase

Drive

Available

Harmonics that were not there before.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar takeMic

Crush

Available

Bit depth, sample rate, and bad decisions.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar takeMic

Chorus

Available

One voice, pretending to be several.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar takeMic

Tremolo

Available

Volume, going up and down on purpose.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar takeMic

Delay

Available

The same thing again, slightly later, slightly quieter.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar takeMic

Reverb

Available

A room, approximated cheaply.

Effects

Runs onlineVST3

Part of OSC-1

KeyboardMIDIDemo phraseGuitar takeMic

FX Mini

Available

Drive, tone, and a delay that knows when to stop.

Effects

Runs onlineVST3

Guitar takeMicDemo phrase

Amp Rig

Available

Tube-style drive into a real cabinet.

Effects

Runs onlineVST3

Guitar takeMicDemo phrase

Chordex

Available

Play one note, get a voiced chord.

MIDI & Modulation

Runs onlineVST3

KeyboardMIDI

CamMod

Available

Your camera becomes a mod wheel.

MIDI & Modulation

Runs onlineWeb only

Camera

Pluck

Coming soon

A string, modelled rather than sampled.

Instruments

VST3

KeyboardMIDIDemo phrase

Space Mini

Coming soon

Room, plate, and the long one.

Effects

VST3

Guitar takeMicDemo phrase

Squeeze

Coming soon

A compressor that tells you what it's doing.

Effects

VST3

Guitar takeMicDemo phrase

Motion

Coming soon

Chorus, phaser, tremolo - one LFO section, three destinations.

Effects

VST3

Guitar takeMicDemo phrase

Steps

Coming soon

Sequencer and arpeggiator, same grid.

MIDI & Modulation

VST3

KeyboardMIDI

Every module here is open.

Open means two specific things, and neither of them is a free trial. You can read the source of every module in this directory, and you can take it with you — the plugin build is a real file on your disk that keeps working whether or not this site does. Play anything without an account. Fork anything you'd rather have differently.

If you've spotted the gap in this list — the pedal nobody has built, the utility you keep rebuilding by hand — the directory is open on that end too.

Build your own How publishing works Read the source on GitHub