macOS 10.5 Public

The updated client provided reusable visual layouts for composing graphic-rich email while retaining cross-platform viewing as an explicit launch goal.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Mail paragraph; stationery

Leopard placed lightweight note-taking and task management inside the email application so those records could participate in familiar mailbox and calendar workflows.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Mail paragraph; Notes and To Dos
2. [2] Apple Unveils Near Final Mac OS X Leopard · Other new features; Mail

Leopard added one-click backup setup, maintained an up-to-date history on additional storage, and provided search-and-restore workflows for deleted data plus full-system recovery.

1. [1] Mac OS X 10.5 - Technical Specifications · Feature-specific requirements; Time Machine
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Time Machine paragraphs and external-drive footnote

The framework exposed animation capabilities related to effects used in Leopard's own interface, and Apple's final specifications list it as a key 10.5 technology.

1. [1] Mac OS X 10.5 - Technical Specifications · Key Technologies; Core Animation
2. [2] Apple Unveils Near Final Mac OS X Leopard · Processor technologies paragraph; Core Animation

Data detectors offered shortcuts from detected phone numbers, addresses, and dates into Address Book or iCal, while feed subscriptions appeared alongside email.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Mail paragraph; data detectors and RSS

Stacks exposed a folder's contents directly from the Dock and automatically gave common downloads a dedicated location, while allowing users to create additional stacks for frequently used material.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Dock and Stacks paragraph
2. [2] Apple to Ship Mac OS X Leopard on October 26 · New desktop and Dock; Stacks

Leopard brought shared computers into the main Finder workflow and extended Spotlight and drag-and-drop operations to supported network content.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Updated Finder network paragraph

The redesigned file browser added a visual way to move through files and applications while simplifying access to folders and computers exposed on a local network.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Finder and sidebar paragraphs
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Updated Finder paragraph

The communication app gained a presentation surface for sharing supported media and documents with call participants without replacing the conference context.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · iChat paragraph; iChat Theater
2. [2] Apple Unveils Near Final Mac OS X Leopard · Other new features; iChat

Leopard added high-resolution and full-screen previews from Finder so users could inspect many files, including playable media, before opening an editor or viewer.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Finder and Quick Look paragraph
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Quick Look paragraph

Leopard let users monitor a chosen region of a site from Dashboard without requiring a separately authored widget.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Other new features; Web Clip
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Other new features; Web Clip

The retail release maintained support across two processor architectures and used installation media that offered upgrade, Archive and Install, or Erase and Install paths, subject to the documented storage and memory requirements.

1. [1] Mac OS X 10.5 - Technical Specifications · General requirements and What's in the Box
2. [2] Mac OS X 10.5 Leopard Installation and Setup Guide · Pages 4–8; installation choices
3. [3] Apple to Ship Mac OS X Leopard on October 26 · Pricing & Availability; system requirements

Video chats could apply visual distortions or color treatments and replace the apparent background with compatible still or moving media.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · iChat paragraph; effects and backdrops
2. [2] Mac OS X 10.5 - Technical Specifications · Photo Booth and backdrop feature requirements

The service extended Finder-style access beyond the local network for users with the required .Mac membership and compatible remote setup.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Finder paragraph; Back to My Mac
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Finder paragraph; Back to My Mac

The public release applied a common window theme across applications and used stronger visual emphasis to distinguish the focused window.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Desktop visual-design paragraph

Apple's near-final announcement described a mixed-width runtime model intended to let developers use 64-bit processing without abandoning the installed 32-bit software and driver ecosystem; the final 10.5 specification lists 64-bit computing among the shipped technologies.

1. [1] Mac OS X 10.5 - Technical Specifications · Key Technologies; 64-bit computing
2. [2] Apple Unveils Near Final Mac OS X Leopard · Processor technologies paragraph; 64-bit support

The operating system shipped the completed Boot Camp utility for compatible Intel hardware, with a separately licensed supported Windows version still required.

1. [1] Mac OS X 10.5 - Technical Specifications · Feature-specific requirements; Boot Camp
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Other new features; Boot Camp and footnote

The bundled camera app broadened its output beyond still images, while some effects remained dependent on the processor and camera capabilities listed in Apple's specifications.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Other new features; Photo Booth
2. [2] Mac OS X 10.5 - Technical Specifications · Photo Booth feature-specific requirements

The media-browsing experience received an update while retaining an Apple Remote and compatible built-in infrared hardware as its documented baseline.

1. [1] Mac OS X 10.5 - Technical Specifications · Feature-specific requirements; Front Row
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Other new features; Front Row

Leopard expanded the calendar from personal scheduling toward standards-based shared and group calendars.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Other new features; iCal
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Other new features; iCal

The update combined content restrictions and scheduled-use controls with reporting that could be reviewed from another Mac on the home network.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Other new features; Parental Controls

Leopard extended a conversation into an interactive remote-desktop session, subject to the network requirements documented for iChat and Finder screen sharing.

1. [1] Mac OS X 10.5 - Technical Specifications · Feature-specific requirements; screen sharing
2. [2] Apple to Ship Mac OS X Leopard on October 26 · iChat paragraph; screen sharing

The reference application gained a web-backed encyclopedia view alongside its existing language resources.

1. [1] Apple to Ship Mac OS X Leopard on October 26 · Other new features; Dictionary

Users could separate projects into distinct workspaces and switch among them with mouse or keyboard controls rather than keeping every window in one desktop.

1. [1] Apple Unveils Near Final Mac OS X Leopard · Other new features; Spaces
2. [2] Apple to Ship Mac OS X Leopard on October 26 · Spaces paragraph

Apple paired a revised IDE and interface-design workflow with language, widget, tracing, and performance-analysis tools. The June near-final announcement used the provisional name Xray for its performance application; the final specification lists Instruments instead.

1. [1] Mac OS X 10.5 - Technical Specifications · Development tools list
2. [2] Apple Unveils Near Final Mac OS X Leopard · Other new features; development tools