[hexmiles]

Not really unless you count Ethernet as wired, in that case there are plenty of tools that work and is probably your best option (thing like parsec, nomachine, or even steam remote play).

As far as I know scrcpy only work because android devices works as USB device/gadget and can be connected to a host, two computers will work both as host and cannot be connected directly. You could do it with something akin to the Raspberry Pi that can work as a USB device instead of a host, but I don't know of any software that does directly(without emulating a network connection, and if you emulate a network connection you could use one of the many sofware for screen sharing) if i remember correctly even scrcpy use ADB to emulate a TCP connection.

[causi]

two computers will work both as host and cannot be connected directly

I cannot believe transferring a file from one computer to another without a network is still such a pain in the rear.

[aa_memon]

Do these limitations also apply to the newer Thunderbolt based usb c ports? If you can’t tell I really miss target display mode and wish a wired cross platform ideally open source solution existed to use any computer as a second monitor.

[hexmiles]

Yes, as far I know.

To avoid this problem, I still carry in my bag two ethernet-to-usb adapter and an Ethernet cable to be able to quickly connect two devices together.