Apple scheduled Mac OS X 10.5 Leopard for release on 26 October 2007. The operating system introduced more than 300 features, including Stacks in the Dock, a redesigned Finder, Quick Look, Spaces and Time Machine.
Finder added Cover Flow, network search through Spotlight and drag-and-drop copying between computers. Quick Look previewed documents and played media without opening the associated application, while Spaces separated applications and documents into project-specific desktops.
Time Machine maintained automatic backups and could restore individual files, applications or an entire system from an external drive. Boot Camp moved out of beta and allowed Windows XP or Vista to run natively on Intel-based Macs, provided the user supplied a Windows licence.
Leopard also added screen sharing and media presentation to iChat, CalDAV-based groupware features to iCal and an updated Front Row interface.
The release required at least 512 MB of RAM and an Intel, PowerPC G5 or PowerPC G4 processor running at 867 MHz or faster. Time Machine required a separately purchased external drive.
