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Coming soonMIDI & Modulation

Steps

Sequencer and arpeggiator, same grid.

Not built yet.
There is nothing to play here. This page is what Steps will do, not a demo pretending it already exists.
Planned inputsKeyboardMIDI

About

A step sequencer and arpeggiator on one grid, with per-step velocity, gate, and ratchets.

Take it into your DAW.

Same DSP as this page. The plugin isn't a rebuild — it's the identical kernel from the identical TypeScript source, compiled native instead of to WASM.

Free forever, no account, and playing it in the browser will never ask you for one. VST3 and standalone today; AU and CLAP are on the roadmap.

It's yours to read and to fork.

Research preview

npx codex clone steps
npm run dev

The codex CLI name is proposed, not shipped. That command gives you this module's DSP, schema, presets and UI as a local project — change a number, hear it immediately.

no audio kernel · MIDI effect

Goes well with.

Available
Play one note, get a voiced chord.

MIDI & Modulation

Runs onlineVST3
KeyboardMIDI
Available
A small subtractive synth with nothing to hide.

Instruments

Runs onlineVST3
KeyboardMIDIDemo phrase