Before downloading any DMG file, verify its checksum (if provided), scan for malware, and respect copyright laws, especially if the software will be used for commercial purposes or public distribution.
1. Overview of Mac OS X 10.3 Panther Mac OS X 10.3 “Panther” was released by Apple Inc. on October 24, 2003. It was the fourth major release of Mac OS X, succeeding Mac OS X 10.2 “Jaguar” and preceding Mac OS X 10.4 “Tiger.” Panther introduced a significant visual and performance overhaul, including a redesigned Finder, the introduction of Exposé (window management), Fast User Switching, and improved compatibility with Microsoft Windows networks.