Your desk is a keyboard.

Get 4 additional buttons with hollow

Hollow listens to the four areas around your laptop and turns intentional taps into actions: a screenshot, a launched app, a URL, or a keyboard shortcut. Local, deterministic, no cloud.

Open source under MIT licence

Laptop on a dark desk with four glowing zones highlighted around it; a hand taps the front-left zone and a notification reads 'Three-finger tap detected'.
HOW IT WORKS

Three steps from
silent desk to shortcut.

  1. STEP / 01

    Calibrate

    Tap each of the four zones so Hollow learns your specific laptop, desk and microphone.

  2. STEP / 02

    Assign

    Pick an action per zone from the system tray. Change them any time.

  3. STEP / 03

    Tap

    Hollow recognizes intentional taps and runs the assigned action instantly.

NOTE. Calibration belongs to a specific laptop position, microphone and desk surface. Moving the laptop or changing the surface may require recalibration.

ZONE ACTIONS

Four zones.
Your commands.

Assign exactly one action per zone. Everything is configured locally through a small tray app. No wizard, no account, no telemetry.

01

Screenshot

Save a uniquely named PNG of the full display to disk.

02

Open URL

Launch any HTTP/HTTPS address in the Windows default browser.

03

Launch app

Start a selected Windows application or shortcut.

04

Send shortcut

Trigger a configured key combination in the active app.

PRIVACY

Nothing leaves your laptop.

Hollow keeps only a short rolling audio window in memory while armed. Raw microphone audio, PCM data, WAV files and speech content are never written to disk during normal listening, calibration or diagnostics.

  • No cloud processing
  • No account, no sign-in
  • No telemetry
  • No advertising
  • No automatic update checks
  • No background network requests
  • Calibration stores numeric features only
  • Pause and Exit close the mic stream
OPEN SOURCE · MIT

Open by design.

Inspect the detector, review the privacy model, build it yourself, report hardware results, or contribute improvements. No black boxes.

Explore repositoryDocumentationReport issue
  • MIT licensed
  • Deterministic detector
  • Automated tests
  • REPRODUCIBLE
READY?

Give your desk 
four new buttons.

Download for WindowsView on GitHub

NO ACCOUNT · NO CLOUD · JUST YOUR LAPTOP, YOUR DESK AND FOUR USEFUL BUTTONS