How to become a mac osx developer?

Just like iPhone you can download the latest beta through sites like http://iMZDL.com where you can register your idid. This way you save 99 dollar per year cost. Is there a similar way you have access to latest osx beta also?
apart from becoming a registered developer through apple site of course.

Register for free to access Apple developer tools and resources for creating iOS and Mac apps, including Xcode, WWDC videos, sample code, and more.

https://developer.apple.com/...dex.action

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