Mac OS X Public Beta

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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 Catalina beta
* macOS Mojave beta
* macOS High Sierra beta
* macOS Sierra beta