How to Tell if Your Mac is 64-bit

Will Endnote for Mac x8 Support 64-bit by Fall - EndNote General - Discourse

Native Instruments Updates Make 64-bit Macs Happier - CDM Create Digital Music

Apple Moving Macs from Intel to ARM Processors?

How to check if your Mac's software is 32- or 64-bit

FAQ

How can I see if I am running 32bit or 64bit? How can I change this? - Technical FAQ

Here are 235 apps that will not run with MacOS Catalina

How to See If an App Is not 64-Bit in macOS Catalina

Booting into 64-bit mode (Snow Leopard)

macos - Mac OS X: How can I tell if I'm in 64-bit mode? - Super User