The third-party software is made possible by reverse-engineering drivers for more than 6,000 older scanners from 42 manufacturers, including film scanner and flatbed models. With it, Mac users can use their older 32-bit scanner with their Apple desktop or laptop even if they're running macOS Catalina. VueScan was upgraded this week to version 9.7. Third-party scanning software VueScan offers a different solution, namely support for around 6,000 older scanner models. As a result, many older scanners lost native support for the operating system, forcing owners to upgrade to newer hardware or use a different computer that retained compatibility.
Apple's latest desktop operating system, macOS Catalina, dropped support for 32-bit applications.