Mac OS X 10.0
Operating system
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Mac OS X 10.0 is the first major release of Mac OS X, Apple's desktop and server operating system. It was released on March 24, 2001, for a price of $129 after a public beta.
Mac OS X was Apple's successor to the classic Mac OS. Wikipedia
Initial release date: March 24, 2001
Developer: Apple
License: Apple Public Source License
Default user interface: Aqua
OS family: Macintosh; Unix-like
Source model: Closed, with open source components