pegla

Now on macOS and Windows

Spegla is the private, low-latency link between your devices. Your screen stays between them, and it’s free on your local network.

Spegla installs on a Mac or a Windows PC. Open this page on one to download it.

See how it works

How it works

  1. Your screen

    Spegla takes the picture straight from your Mac's graphics: a whole display, or a new one made just for the other device.

  2. Sent in pieces

    Each frame is encoded and split into small packets, so a lost piece costs one quick fix, not a frozen screen.

  3. Across networks

    Spegla finds a direct path between your two networks, and uses its relay only when there isn't one.

  4. Private

    Only your two devices hold the keys. When the relay passes the packets along, it can't read them.

  5. On the other screen

    A Mac or a Windows PC, and later your iPad or phone, puts the pieces back together and draws them straight to its screen.

01 / 05Second screen

Your Mac gets a second screen.

Pick the other computer in Spegla, and macOS sees a new display beside your own. Drag windows onto it, as onto any monitor.

  • It shows up in macOS's Displays settings
  • Drag windows onto it, as onto any monitor
  • Your Mac stays in charge of it

02 / 05You decide

Nothing connects until you say so.

Another device asks, and your Mac shows who it is. Approve, and the second screen appears. Deny, and nothing reaches it.

  • Every request names the device
  • Approve it on the Mac, in a click
  • Deny, and nothing reaches it

03 / 05Across networks

Straight through two networks.

Your Mac and the other computer can each sit behind their own router. Spegla finds a direct path between them, and uses its relay only when there isn't one.

  • Between two homes, an office or a hotel
  • No port forwarding, no VPN to set up
  • Direct when it can be, relayed when it can't

04 / 05When the network drops

The network drops. Your screen holds on.

If the link goes, the second screen keeps the last picture and says it's reconnecting. When the network is back, it catches up with your Mac.

  • The last picture stays on the screen
  • It tells you it's reconnecting
  • It catches up when the link is back

05 / 05Private by default

Your screen stays between your devices.

When there's no direct path, Spegla's relay passes the packets along. It can't read them: only your devices hold the keys.

  • Only your two devices hold the keys
  • The relay forwards what it can't read
  • Anonymous usage data, and you can turn it off