macOS · Window switcher

Every window. One key.

Mullion replaces ⌘⇥ with a switcher that shows every window, with the controls right where your eyes already are. Close, minimize or zoom without leaving the keyboard.

Buy Mullion — €11.11 Download free trial

Checkout opens when Mullion is released.

assets/mullion/hero.mp4Hero video: the switcher opening over a busy desktop
01 · Switcher

Hold ⌘⇥. See everything.

Every open window, laid out in one glass panel. Keep holding to browse, let go to jump.

  • Shows every window, not just one per app
  • Opens instantly, even with many windows open
  • Works across every Space you use
assets/mullion/switcher.mp4Holding ⌘⇥ and browsing windows
02 · Hover controls

Act on a window without leaving the switcher.

Hover a window in the switcher to get close, minimize and zoom buttons. Press, and it's done.

  • Close, minimize or zoom from the keyboard or the mouse
  • Clean up a messy desktop in seconds
assets/mullion/hover-controls.gifHovering a window to reveal close, minimize and zoom
Hovering a window in the switcher to reveal its controls
Private by design

Works offline. Nothing about your Mac leaves it.

After one activation, Mullion works without internet. Your license is checked on your Mac with a signature, and only your license key and a random install ID are ever sent to our servers.

Activate once

Paste your key once. After that, the switcher never waits for a network.

Random install ID

A random ID, kept in your Keychain. No hardware identifiers leave your Mac.

Signed, not phoned home

Your license is verified on your Mac with a cryptographic signature.

03 · Updates

New versions tell you. You decide.

Mullion checks for updates once a day and shows you what changed. Nothing installs until you say so.

  • Release notes shown before you install
  • Every 1.x update is included in your one-time purchase
assets/mullion/update-prompt.pngThe "Update available" window with release notes
The update window showing the new version and its release notes
Pricing

Try it free for 14 days.

Then one payment. Yours forever.

Mullion Pro
€11.11 one-time
  • Use on up to 3 Macs
  • All 1.x updates included
  • Works offline after activation
  • 14-day free trial first
Buy Mullion Pro

Secure checkout via Stripe. Your key appears on the thank-you page and is emailed to you.

Already bought? Activate or recover your key.