Mac OS X version 10.3“Panther” was the fourth major release of Mac OS X, Apple’s desktop and server operating system. It followed Mac OS X v10.2 “Jaguar” and preceded Mac OS X v10.4 “Tiger”. Apple released Panther on October 24, 2003. The cost from Apple was US$129 for a single-user license and US$199 for a Family Pack (5-computer, 1-household) license. They also redesigned the Mac OS X Finder icon.
Since a New World ROM is required for Mac OS X v10.3 (“Panther”), certain older computers (beige Power Mac G3s and “Wall Street” PowerBook G3s) are unable to run Panther by default. third-party software (such as XPostFacto) can override checks made during the install process; otherwise, installation or upgrades from Jaguar will fail on these older machines.
Apple advertised that Mac OS X v10.3 Panther had 150+ new features, including:
Finder – Updated with a brushed-metal interface, a new real-time search engine, customizable Sidebar, secure deletion, File labels and Zip support built in. Finder logo changed.
Fast User Switching – Allows a user to remain logged in while another user logs in
Exposé – Helps the user manage windows by showing them all as thumbnails
Safari - New browser made to replace Internet Explorer for Mac OS X; when the contract between Apple and Microsoft ended, it was developed. Internet Explorer for Mac was still available but not supported by Microsoft or Apple. This was included in an update on 10.2 but was used as the default browser in Panther.