Mac OS X El Capitan
| A version of the macOS operating system | |
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OS X El Capitan desktop
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| Developer | Apple Inc. |
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| OS family | |
| Source model | Closed source (with open source components) |
| Released to manufacturing |
September 30, 2015 |
| Latest release | 10.11.6 (15G1510) / May 15, 2017 |
| Update method | Mac App Store |
| Platforms | x86-64 |
| Kernel type | Hybrid (XNU) |
| License | APSL and Apple EULA |
| Preceded by | OS X 10.10 Yosemite |
| Succeeded by | macOS 10.12 Sierra |
| Official website | OS X - Overview - Apple at the Wayback Machine (archived September 2, 2016) |
| Support status | |
| Security updates and printer drivers only. Extended support to end in 2018. | |
OS X El Capitan (/ɛl kæpᵻˈtɑːn/ el-KAP-ɪ-TAHN) (version 10.11) is the twelfth major release of OS X (now named macOS), Apple Inc.'s desktop and server operating system for Macintosh computers. It is the successor to OS X Yosemite and focuses mainly on performance, stability and security. Following the Northern California landmark-based naming scheme introduced with OS X Mavericks, El Capitan was named after a rock formation in Yosemite National Park, signifying its goal to be a refined version of Yosemite. El Capitan is the final version to be released under the name OS X; its successor, Sierra, was announced as macOS Sierra.
The first beta of OS X El Capitan was released to developers shortly following the 2015 WWDC keynote on June 8, 2015. The first public beta was made available on July 9, 2015. There were multiple betas released after the keynote. OS X El Capitan was released to end users on September 30, 2015, as a free upgrade through the Mac App Store.
All Macintosh computers that can run Mountain Lion, Mavericks, or Yosemite can run El Capitan, although not all of its features will work on older computers. For example, Apple notes that the newly available Metal API is available on "all Macs since 2012".
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