iOS, aka iOS operating system, is an open source operating system created in 2007.

iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that presently powers many of the company's mobile devices, including the iPhone, iPad, and iPod Touch. Read more on Wikipedia...

• iOS website
• iOS Wikipedia page
• iOS first developed in Apple
• PLDB estimates there are currently 5k job openings for iOS programmers.
• Check out the 2,582 iOS meetup groups on Meetup.com.
• See also: (6 related languages)C, Objective-C, Swift, Android, ARM, TLS