macOS 14 or later
Decky Display for Mac
Any Mac can be the screen, and you can drive it
The same client, as its own Mac app. A second Mac, or the laptop somebody brought to the meeting, becomes a display or a viewer for a Mac or a PC. It installs and runs without Decky on the same machine.
Free
Keyboard and pointer go back
Use your keyboard and trackpad to control a shared screen from a Mac or a PC. Decky Display for Mac can also view and control an Android source when remote input is allowed.
Ask for the shape you want
Its main screen, one of its monitors or a fixed size, and from a Mac, a desktop cut to one window. Chosen before connecting, because a display cannot be resized in place.
Pick from a Mac’s windows
A Mac on the other end offers its window list, with the hidden and minimised ones marked, and Decky brings the one you chose back and fits it.
It needs no screen or control permissions
No private APIs, no sandbox exceptions, no screen recording or control to approve. macOS may ask once to let it find computers on your local network. That is what lets it be given away.