That era effectively ended with iTunes 12.7, when Apple removed the App Store and app management features entirely.

For years, power users and IT professionals have clung to a specific, elusive version of the software:

Apple removed 12.6.3 from their main catalog for modern macOS versions. On Mac, you’re better off using a Windows virtual machine or finding a trusted mirror (the official macOS link no longer functions on newer OSes due to certificate expiry). Note: This version is 32-bit and will not run on macOS Catalina (10.15) or later.

There are several reasons why users may want to download iTunes 12.6.3: