Mac OS X Leopard (version 10.5) is the sixth

major release Major (commandant in certain jurisdictions) is a military rank of commissioned officer status, with corresponding ranks existing in many military forces throughout the world. When used unhyphenated and in conjunction with no other indicators ...

macOS macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac (computer), Mac computers. Within the market of ...

, Apple's desktop and server

operating system An operating system (OS) is system software that manages computer hardware, software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ef ...

for

Macintosh The Mac (known as Macintosh until 1999) is a family of personal computers designed and marketed by Apple Inc. Macs are known for their ease of use and minimalist designs, and are popular among students, creative professionals, and software en ...

computers. Leopard was released on October 26, 2007 as the successor of Mac OS X 10.4 Tiger, and is available in two editions: a

desktop A desktop traditionally refers to: * The surface of a desk (often to distinguish office appliances that fit on a desk, such as photocopiers and printers, from larger equipment covering its own area on the floor) Desktop may refer to various compu ...

version suitable for

personal computer A personal computer (PC) is a multi-purpose microcomputer whose size, capabilities, and price make it feasible for individual use. Personal computers are intended to be operated directly by an end user, rather than by a computer expert or tech ...

s, and a

server Server may refer to: Computing *Server (computing), a computer program or a device that provides functionality for other programs or devices, called clients Role * Waiting staff, those who work at a restaurant or a bar attending customers and su ...

version,

Mac OS X Server macOS Server, formerly Mac OS X Server and OS X Server, is a discontinued series of Unix-like server operating systems developed by Apple Inc., based on macOS and later add-on software packages for the latter. macOS Server added serve ...

. It retailed for $129 for the desktop version and $499 for Server. Leopard was superseded by

Snow Leopard The snow leopard (''Panthera uncia''), also known as the ounce, is a felid in the genus '' Panthera'' native to the mountain ranges of Central and South Asia. It is listed as Vulnerable on the IUCN Red List because the global population is es ...

(version 10.6) in 2009. Leopard is the final version of macOS to support the

PowerPC PowerPC (with the backronym Performance Optimization With Enhanced RISC – Performance Computing, sometimes abbreviated as PPC) is a reduced instruction set computer (RISC) instruction set architecture (ISA) created by the 1991 Apple– IBM ...

architecture as Snow Leopard functions solely on

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the devel ...

based Macs. According to Apple, Leopard contains over 300 changes and enhancements compared to its predecessor,

Mac OS X Tiger 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. Som ...

, covering core operating system components as well as included applications and developer tools. Leopard introduces a significantly revised desktop, with a redesigned

Dock A dock (from Dutch ''dok'') is the area of water between or next to one or a group of human-made structures that are involved in the handling of boats or ships (usually on or near a shore) or such structures themselves. The exact meaning va ...

, Stacks, a semitransparent

menu bar A menu bar is a graphical control element which contains drop-down menus. The menu bar's purpose is to supply a common housing for window- or application-specific menus which provide access to such functions as opening files, interacting with ...

, and an updated

Finder Finder may refer to: * Finder (surname) * Finder (software), part of the Apple Macintosh operating system * ''Finder'' (comics), a comic book series by Carla Speed McNeil * ''Finder'' (novel), a 1994 novel by Emma Bull * Finder Wyvernspur, a fi ...

that incorporates the Cover Flow visual navigation interface first seen in iTunes. Other notable features include support for writing

64-bit In computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit CPUs and ALUs are those that are based on processor registers, address buses, or data buses of that size. A comp ...

graphical user interface The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows User (computing), users to Human–computer interaction, interact with electronic devices through graphical icon (comp ...

applications, an automated backup utility called

Time Machine Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a ...

, support for Spotlight searches across multiple machines, and the inclusion of Front Row and

Photo Booth A photo booth is a vending machine or modern kiosk that contains an automated, usually coin-operated, camera and film processor. Today, the vast majority of photo booths are digital. History The patent for the first automated photography ...

, which were previously included with only some Mac models. Apple missed Leopard's release time frame as originally announced by Apple's CEO

Steve Jobs Steven Paul Jobs (February 24, 1955 – October 5, 2011) was an American entrepreneur, industrial designer, media proprietor, and investor. He was the co-founder, chairman, and CEO of Apple; the chairman and majority shareholder of Pixar; ...

. When first discussed in June 2005, Jobs had stated that Apple intended to release Leopard at the end of 2006 or early 2007. A year later, this was amended to Spring 2007; however, on April 12, 2007, Apple issued a statement that its release would be delayed until October 2007 because of the development of the iPhone.

New and changed features

End-user features

Apple advertised that Mac OS X Leopard has 300+ new features, including: *A new and improved Automator, with easy starting points to easily start a workflow. It also can quickly create or edit workflows with new interface improvements. Now it can use a new action called "Watch Me Do" that lets users record a user action (like pressing a button or controlling an application without built-in Automator support) and replay as an action in a workflow. It can create more useful Automator workflows with actions for RSS feeds, iSight camera video snapshots, PDF manipulation, and much more. * Back to My Mac, a feature for

MobileMe MobileMe (branded iTools between 2000 and 2002; .Mac until 2008) is a discontinued subscription-based collection of online services and software offered by Apple Inc. All services were gradually transitioned to and eventually replaced by the ...

users that allows users to access files on their home computer while away from home via the internet. *

Boot Camp Boot camp may refer to: Training programs * Boot camp (correctional), a type of correctional facility for adolescents, especially in the U.S. penal system * Boot camp, a training camp for learning various types of skills ** Dev bootcamp, a de ...

, a software assistant allowing for the installation of other operating systems, such as

Windows XP Windows XP is a major release of Microsoft's Windows NT operating system. It was release to manufacturing, released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct upgrade to its predecessors, Wind ...

(SP2 or later) or

Windows Vista Windows Vista is a major release of the Windows NT operating system developed by Microsoft. It was the direct successor to Windows XP, which was released five years before, at the time being the longest time span between successive releases of ...

, on a separate partition (or separate internal drive) on Intel-based Macs. *

Dashboard For business applications, see Dashboard (business). A dashboard (also called dash, instrument panel (IP), or fascia) is a control panel set within the central console of a vehicle or small aircraft. Usually located directly ahead of the driv ...

enhancements, including Web Clip, a feature that allows users to turn a part of any Web page displayed in

Safari A safari (; ) is an overland journey to observe wild animals, especially in eastern or southern Africa. The so-called "Big Five" game animals of Africa – lion, leopard, rhinoceros, elephant, and Cape buffalo – particularly form an importa ...

into a live Dashboard widget, and

Dashcode Dashcode was a software application created by Apple Inc. that was included with Mac OS X Leopard and facilitates the development of widgets for Dashboard. It was first included on new MacBooks shipping around the time of May 24, 2006, as part ...

to help developers code widgets. *New Desktop, comprises a redesigned 3-D

dock A dock (from Dutch ''dok'') is the area of water between or next to one or a group of human-made structures that are involved in the handling of boats or ships (usually on or near a shore) or such structures themselves. The exact meaning va ...

with a new grouping feature called Stacks, which displays files in either a "fan" style, "grid" style, or (since 10.5.2) a "list" style. Rory Prior, on the ThinkMac blog, criticized the shelf-like Dock along with a number of other changes to the user interface. * Dictionary can now search

Wikipedia Wikipedia is a multilingual free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and using a wiki-based editing system. Wikipedia is the largest and most-read ref ...

, and a dictionary of Apple terminology as well. Also included is the Japanese-language dictionary

Daijisen The is a general-purpose Japanese dictionary published by Shogakukan in 1995 and 1998. It was designed as an "all-in-one" dictionary for native speakers of Japanese, especially high school and university students. History Shogakukan intended fo ...

, Progressive E-J and Progressive J-E dictionaries, and the 25,000-word thesaurus , all of which are provided by the Japanese publisher

Shogakukan is a Japanese publisher of Japanese dictionaries, dictionaries, literature, comics (manga), non-fiction, DVDs, and other media in Japan. Shogakukan founded Shueisha, which also founded Hakusensha. These are three separate companies, but are to ...

. *A redesigned

, with features similar to those seen in iTunes 7, including Cover Flow and a Source list-like sidebar. * Front Row has been reworked to closely resemble the interface of the original

Apple TV An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple trees are cultivated worldwide and are the most widely grown species in the genus '' Malus''. The tree originated in Central Asia, where its wild ancestor, ...

. *

iCal Calendar is a personal calendar app made by Apple Inc. that runs on both the macOS desktop operating system and the iOS mobile operating system. It offers online cloud backup of calendars using Apple's iCloud service, or can synchronize wi ...

calendar sharing and group scheduling as well as syncing event invitations from Mail. The icon also reflects the current date even when the application is not running. In previous versions of Mac OS X, the icon would show July 17 in the icon any time the application was not running but the current date when the application was running. *

iChat iChat (previously iChat AV) is a discontinued instant messaging software application developed by Apple Inc. for use on its Mac OS X operating system. It support