The most prominent new feature is System Integrity Protection, which prevents malware from hijacking your Mac by masquerading as a user with system-administration privileges. The system also has numerous security tweaks and improvements that help the system run smoothly and safely. This incarnation of OS X has improved security and control features and works a lot more stable, not to mention faster.ĭue to Apple's Open Beta campaign El Capitan provides a very stable performance and is compatible with most of the popular applications. Mac OS X 10.11 El Capitan is a new version of Apple's juggernaut line of operating systems providing the only alternative to Microsoft Windows. Mac OS X 10.11 El Capitan Free Download Overview and Screenshots It comes with a safe official offline installer for Mac OS X 10.11 El Capitan. Download the latest official version of Mac OS X 10.11 El Capitan.