Apple yesterday previewed Mac OS X version 10.3, known as Panther, which the company claims has more than 100 additional features.
Enhancements include Expose, a revamped way to see all open windows at once, iChat AV, a desktop video conferencing system, and a redesigned Finder.
The fourth major release of Mac OS X in four years, Panther is due at the end of 2003.
"With Jaguar, we moved ahead of the competition. With Panther, we're widening the gap," said Steve Jobs, chief executive at Apple.
"With over 100 new features, including some real blockbusters, Apple is again the industry innovator in operating systems."
Panther's redesigned Finder navigation tool puts a user's favourite folders, hard drive, network servers, iDisk and removable media in one location.
It also supports coloured labels to better organise documents, and dynamic browsing of the network for Mac, Windows and Unix file servers.
Expose, a way to instantly view all open windows and choose any of them to be on top, is powered by the Mac OS X Quartz graphic engine.
Apple's iChat instant messenger gets a face lift with added support for full-screen, full-motion video over broadband, or audio over 56Kbps.
Other features include FileVault, which secures the contents of a home directory with 128-bit AES encryption on the fly.
Panther also allows Macs to co-exist in Windows networks, including an IPSec-based virtual private network for Microsoft and Cisco networks, support for ActiveDirectory and SMB-based home directories on Windows servers.
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