OS X 10.5 Leopard- 2007 OS X 10.6 Snow Leopard- 2009 OSX 10.7 Lion- 2011 OS X 10.10: Yosemite-2014 OS X 10.11: El Capitan- 2015 MacOS 10.12: Sierra- 2016 MacOS 10.13: High Sierra- 2017 MacOS 10.14: Mojave- 2018 Mac os 10.15:Catalina ...
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