Observed arrival · 2026-08-29
Sleight Turns a Webcam into a MIDI Instrument
Sleight is a free, open-source macOS app that tracks hand movements and turns them into MIDI performance controls.
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●Pro
◎Niche
◉Human
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ƒJS
Field notes
The app maps distinct gestures to musical parameters: horizontal hand movement produces continuous pitch changes, pinch controls note and volume behavior, and finger curl triggers floating pads. Its output appears as a standard CoreMIDI source, with selectable MIDI 2.0, MPE, or MIDI 1.1 modes. The page also documents automatic synth muting when a DAW is connected, allowing Logic or Ableton to receive the signal without doubling the sound.
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○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
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