Mac OS X official releases up to 2016: Kodiak Mac OS X also contains core basic applications for everyday use, such as Finder, Safari, QuickTime, iTunes, iMessage, Mail, Contacts, Calendar, TextEdit, Preview, iBooks, Photos and many more.
Mac OS X supports both PowerPC and Intel-based versions of Mac computers, but PowerPC only up to version 10.5. The latest version codenamed El Capitan were introduced in 2015 (version 10.11). Mac OS X is Unix-based operating system for Apple Mac computers released in 2000.