Apple Mac OS X Yosemite

OS X is the operating system that powers every Mac. Built on a rock-solid UNIX foundation, it's engineered to take full advantage of what the hardware is capable of.

It's designed to be as easy to use as it is beautiful to look at. It comes with an amazing collection of apps you'll use -- and love -- every day. And it enables your Mac and iOS devices to work wonderfully together.
What's new in this version:
Resolves an issue that may cause Wi-Fi to disconnect Resolves an issue that may cause web pages to load slowly Fixes an issue that caused Spotlight to load remote email content when the preference was disabled in Mail Improves audio and video sync when using Bluetooth headphones Adds the ability to browse iCloud Drive in Time Machine Improves VoiceOver speech performance Resolves an issue that causes VoiceOver to echo...