SAN FRANCISCO - Apple on Monday unveiled new operating software it hopes will create a seamless experience for users flitting between its coveted mobile devices and popular Macintosh computers.
A next generation operating system called "Yosemite" and new iOS 8 software for iPads, iPhones and iPod devices were unveiled before 6,000 developers at a sold-out conference here.
In a keynote presentation, chief executive Tim Cook said this would make it easy to start tasks on one Apple device and to continue on another: "a seamless experience unparalleled in the industry."
Alongside the operating system updates, the California company - the world's largest by market value - unveiled HealthKit software to manage personal healthcare and HomeKit for home appliances.
Apple played to its audience at the conference of third-party developers, hoping to keep them enthused, informed and devoted when it comes to designing hip, fun or functional apps.
Mr Cook devoted a chunk of the keynote to a software development kit he billed as the biggest release since the launch of the App Store.
Apple also debuted a programming language called Swift, to allow developers write programs that are faster, modern, safer and more interactive than they would be under its predecessor Objective C.