Having searched for that, most options I find are either ridiculously expensive, and/or poorly documented or limited. Any suggestion for good ones?
Frankly I'd be far more inclined to pay the "ridiculously expensive" prices for one that is well documented and open, and where the firmware is easily modifiable.
This seems to be a KVM switch, not a boundless/roaming KM switch?
Note no "V"; it's to have the mouse seamlessly move from one desktop to the other when the machines are each connected to their own screen. Browser-based is also a non-starter for that use.
I'll definitely have a look if/when I need a KVM over IP switch, though.
Frankly I'd be far more inclined to pay the "ridiculously expensive" prices for one that is well documented and open, and where the firmware is easily modifiable.