One keyboard,
two machines.
Beamer lets one keyboard and one mouse or trackpad drive a Mac and a Windows PC over the local network, in either direction. Push the pointer off the shared edge and it carries on onto the other machine; or double-tap a trigger key to switch instantly — Right Option on the Mac, Right Ctrl on the PC. The clipboard follows with it.
How it works
Two machines on the same network, one pair of hands. Move the pointer to the edge of the screen where the other machine sits and it keeps going, arriving on the other side in the matching position. The keyboard and clipboard go with it, so a copy on one machine is a paste on the other.
- Switch by pointer, at the shared screen edge, or by double-tapping Right Option (Mac) or Right Ctrl (PC)
- The clipboard follows you between machines
- Pairing is a six-digit code — nothing to type by hand
- Traffic never leaves the LAN, encrypted and authenticated with a key derived from a shared token
Download — version 1.2.0
Free, and MIT licensed.
Or, on Windows, with winget: winget install KalkmanCode.Beamer
The Mac build is signed and notarised by Apple. It asks for Accessibility and Input Monitoring permissions, one at a time, when it needs them.
A note on the Windows warning
The Windows installer is not code-signed yet — certificates cost money, and this is a free release. Run it and Windows will show “Windows protected your PC”. Click More info, then Run anyway. Installing through winget does not show this warning at all.
The source is on GitHub, so anyone can check what it does before running it, or build it themselves: github.com/kalkman-code/beamer.
Requirements
- macOS
- Windows 10 or 11
- Both machines on the same local network
- The Windows app asks for administrator rights, so it can type into admin windows too