The Mac OS X Public Beta was the first publicly available version of Apple Computer’s Mac OS X operating system to feature the Aqua user interface. It was released to the public on September 13, 2000. We encourage you to stay 2 versions behind for better stability with your programs and 1 version for Internet browsers support.
Join the Apple Beta Software Program with Apple ID then download the following:
* macOS Big Sur Beta 11.3
* macOS Catalina Beta 10.15 with patch
* macOS Mojave Beta 10.14
* macOS High Sierra Beta 10.13
* macOS Sierra Beta 10.12