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|Version of OS X|
OS X El Capitan, or OS X 10.11, is the twelfth major release of the OS X operating system released on 30 September 2015. It was announced on 8 June 2015 at WWDC. It is the last version of OS X to have support for Intel processors without SSE4.1. It is also the last version to be released under the OS X name as the operating system would be rebranded as macOS starting with the release of macOS Sierra in 2016.
As of June 2023, OS X El Capitan had a global macOS market share of 0.94%.