Crispy app icon

Crispy

One keyboard. One mouse.
Every computer.

Glide from your Mac to your PC like they're one machine. Copy on one, paste on the other. Crispy shares your keyboard, mouse, and clipboard across every computer on your desk.

Download for Mac Download for Windows Get Crispy

Also available for Windows Also available for Mac

Free  ·  Version 1.0.0  ·  macOS 11 or later  ·  Windows 10 & 11

Crispy turns the computers on your desk into one seamless workspace. No cables. No switch box. No accounts. Just push your cursor past the edge of the screen — and keep going.

6digits to pair a new computer
256-bitChaCha20 keys protect every keystroke
0accounts, logins, or cloud servers
2platforms. One keyboard and mouse.

How it works

Pair in seconds.

Open Crispy on both computers and type the six‑digit code. That's the whole setup.

Locked from the first byte.

Paired computers talk over an end‑to‑end encrypted channel. Nobody else on the network can read a thing.

Arrange your screens.

Drag your computers into place to match your desk. Edges that touch become doorways.

Then just move across.

Push your cursor past the edge and your keyboard and mouse follow it to the next computer.

Features

Crisp in every detail.

A tiny app that disappears into your menu bar or system tray — and makes your whole desk work like one computer.

Shared clipboard

Copy here.
Paste there.

Text, images, even files. Copy on your Mac and paste on your PC — no more emailing things to yourself.

Pairing

Six digits. Done.

Type the code once and your computers remember each other.

Encryption

Encrypted, end to end.

Every key press and click is sealed with ChaCha20‑Poly1305.

Discovery

Finds your computers.

Computers running Crispy on your network show up on their own. Or connect by address.

Mac ⇄ PC

Speaks both languages.

Map Command to Control and Option to Alt, so your shortcuts just work.

Native everywhere

Built for both.

A Universal Mac app for Apple silicon and Intel, plus a lightweight installer for Windows.

Universal.

Apple siliconIntelmacOS 11+Windows 10 & 11

Menu bar & tray

Always a click away.

Crispy lives quietly in your menu bar or system tray, and can start at login so it's ready before you are.

Hotkeys

A shortcut for every move.

Keep the cursor put, call it home, or hop to the next computer — without touching the mouse.

Fine-tuning

Feels native. On both.

Dial in every detail, from scroll feel to how files land.

Privacy & security

Your keystrokes are
nobody's business.

Everything Crispy sends — every key press, every click, every copy — is encrypted before it leaves your computer, and can only be read by the computers you've paired.

Noise_XX_25519_ChaChaPoly_BLAKE2s

Encrypted, end to end.

Built on the Noise protocol: a XX handshake with Curve25519 keys, ChaCha20‑Poly1305 encryption, and BLAKE2s hashing.

Only computers you trust.

A computer has to be paired with a six‑digit code before it can connect. You can create a fresh identity at any time to start over.

No accounts. No cloud.

Crispy talks directly between your computers on your local network. There's nothing to sign up for and nothing to log in to.

Get Crispy.

Free for Mac and Windows. Install it on every computer you want to share — then pair them once.

Recommended for this computer

Crispy for Mac

macOS 11 Big Sur or later

  • Universal — Apple silicon & Intel
  • Disk image (.dmg) · 12.2 MB
  • Version 1.0.0
Download for Mac
SHA‑256 checksum
9de26625f59240540654ffedd44a3f171ea327ea1ca415f9b56bb9185404f0c9
Recommended for this computer

Crispy for Windows

Windows 10 or 11 (64-bit)

  • x64 PCs
  • Installer (.exe) · 4.4 MB
  • Version 1.0.0
Download for Windows
SHA‑256 checksum
c8ad3d764515fcc77d989eed7e6d6b0e913a4a7492fe5f19aac68e67cbffa020

Your computer may ask you to confirm before opening Crispy for the first time. That's normal for apps downloaded from the web. Here's what to do.

Setup

Up and running in a minute.

  1. 1

    Open the disk image.

    Double-click Crispy_1.0.0_universal.dmg, then drag Crispy into your Applications folder.

  2. 2

    Open Crispy.

    If macOS says it can't verify the app, go to System Settings › Privacy & Security and click Open Anyway.

  3. 3

    Allow Accessibility.

    Crispy needs Accessibility permission to share your keyboard and mouse. Turn it on in Privacy & Security › Accessibility.

  4. 4

    Pair and arrange.

    Enter the six-digit code from your other computer, then drag your screens into place in Arrangement.

Questions? Answers.

Yes. Install Crispy on each computer you want to share — the one with the keyboard and mouse, and every computer you want to control. You only pair them once.

Absolutely. Crispy works Mac to PC, PC to Mac, Mac to Mac, and PC to PC. You can map modifier keys between platforms, so ⌘ on your Mac can act like Ctrl on your PC.

Yes. Crispy works over your local network, Wi‑Fi or Ethernet. It finds nearby computers automatically, and you can also connect by address. For the smoothest cursor, use Ethernet or a strong Wi‑Fi connection.

Everything between your computers is end‑to‑end encrypted using the Noise protocol (Curve25519, ChaCha20‑Poly1305, BLAKE2s), and only computers you've paired with the six‑digit code can connect.

Yes. Copy text, images, or files on one computer and paste them on another. Very large copies can go over the size limit, which you can raise in Crispy's settings.

Move it back across the edge, use your bring-home hotkey, or choose Pause Sharing from the Crispy menu. Using the computer's own mouse can take control back too.

macOS requires it for any app that reads or sends keyboard and mouse input. Crispy uses it only to share your keyboard and mouse with the computers you've paired.

Mac: macOS 11 Big Sur or later, on Apple silicon or Intel. Windows: Windows 10 or 11, 64-bit.

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