Nov 03, 2018 · The following discussion only applies to the older Mac OS X version The Finder is the default file manager used on the Mac OS and Mac OS X operating systems that is responsible for the overall user-management of files, disks, network volumes and the launching of other applications.
Control Center for Mac. Instantly access the controls you use most — like Wi-Fi and Bluetooth — and new controls to play music and enable Dark Mode for your display. Designed just for Mac, the new Control Center lets you add controls and drag favorites to the menu bar to customize it just for you.
So, Apple announced macOS Catalina in WWDC 2019. If you want to give macOS Catalina a try, then you're in the right place. Choose Apple Mac OS X from operating system list then select macOS 10.15 from version and click Next.