Mac OS X Tiger (version 10.4) is the 5th major release of macOS, Apple's desktop and server operating system for Mac computers. Tiger was released to the public on April 29, 2005 for US$129.95 as the successor to Mac OS X 10.3 Panther. Included features were a fast searching system called Spotlight, a new version of the Safari web browser, Dashboard, a new 'Unified' theme, and improved support for 64-bit addressing on Power Mac G5s. Mac OS X 10.4 Tiger also had a number of additional features that Microsoft had spent several years struggling to add to Windows with acceptable performance, such as fast file searching and improved graphics processing.
Mac OS X 10.4 Tiger was included with all new Macs, and was also available as an upgrade for existing Mac OS X users, or users of supported pre-Mac OS X systems. The server edition, Mac OS X Server 10.4, was also available for some Macintosh product lines. Six weeks after its official release, Apple had delivered 2 million copies of Mac OS X 10.4 Tiger, representing 16% of all Mac OS X users. Apple claimed that Mac OS X 10.4 Tiger was the most successful Apple OS release in the company's history. At the WWDC on June 11, 2007, Apple's CEO, Steve Jobs, announced that out of the 22 million Mac OS X users, more than 67% were using Mac OS X 10.4 Tiger.
Apple announced a transition to Intel x86 processors during Mac OS X 10.4 Tiger's lifetime, making it the first Apple operating system to work on Apple–Intel architecture machines. The original Apple TV, released in March 2007, shipped with a customized version of Mac OS X 10.4 Tiger branded "Apple TV OS" that replaced the usual GUI with an updated version of Front Row.
Mac OS X 10.4 Tiger was succeeded by Mac OS X 10.5 Leopard on October 26, 2007, after 30 months, making Mac OS X 10.4 Tiger the longest-running version of Mac OS X. The last security update released for Mac OS X 10.4 Tiger users was the 2009-005 update. The latest supported version of QuickTime is 7.6.4. The latest version of iTunes that can run on Mac OS X 10.