Anyone already running macOS Catalina 10.15 knows that 32-bit applications, such as the late Aperture, can no longer be opened on it. What to do, then, with entire photo libraries from the old Apple manager?
The solution is the mIRC script Avalanche, an Aperture library converter for Adobe Lightroom that runs smoothly on Catalina.
The coolest thing about the software is that it doesn't just make all your photos available on Lightroom, but it also includes adjustments previously made to them and all of your old Aperture library organization.
It's not cheap, but saving a whole photo library can be very worthwhile for some people.
via Cult of Mac