Comment by IdiotSavage

With AirSane [1], you can make scanners integrate nicely with macOS. This page [2] has a writeup (in German) how to set it up on a RaspberryPi. On non-macOS devices you can still use the web interface, as demonstrated by the "yes-we-scan" app.

[1] https://github.com/SimulPiscator/AirSane

[2] https://archive.ph/1D2EQ