More than ever, Mac is the computer people love to use. And one of the biggest reasons is OS X. It's what makes a Mac a Mac. With OS X, it's simple to do amazing things and delightful to do all the everyday things. OS X El Capitan builds on the groundbreaking features and beautiful design introduced in OS X Yosemite, refining the experience and improving performance in lots of little ways that make a big difference. OS X El Capitan -- it takes the Mac experience to new heights.
Mac OS X 10.10