OS X El Capitan (version 10.11) is the twelfth major release of OS X, Apple Inc.\’s desktop and server operating system for Macintosh computers. It is the successor to OS X 10.10 Yosemite. The first beta of OS X El Capitan was released to developers shortly following the 2015 WWDC keynote. OS X El Capitan is a minor update which focuses mainly on performance, stability, and security rather than adding numerous new features as its predecessor had.
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.