Liquid Glass redesign — glossy, translucent UI everywhere. 

Spotlight overhaul — smarter search, quick actions, clipboard history. 

Phone app on Mac — handle real cellular calls from iPhone. 

Live Activities in menu bar — updates from iPhone show on Mac. 

Apple Intelligence in Shortcuts — AI-powered actions integrated across OS. 

Journal app arrives — first-party journaling tool on Mac. 

Magnifier app — zoom live camera feed on Mac. 

Live Translation — auto-translate calls, FaceTime, Messages. 

Apple Games app with overlay — game hub, in-game controls overlay. 

Enhanced customization — folder colors, icons tint, Control Center layout. 

Accessibility upgrades — Braille support, Accessibility Reader, Vehicle Motion Cues. 

Photos app enhancements — filters, pinned collections, adjustable tile sizes. 

FaceTime redesign — tiled layout, Contact Posters, transparent controls. 

Messages improvements — polls, backgrounds, typing indicators, spam screening. 

Notes updates — markdown support, call-transcription audio. 

Passwords manager updates — view old versions, change history. 

iPhone Mirroring – control your iPhone from your Mac. 

Apple Intelligence – AI-powered system with writing, images, Siri. 

Easy window tiling – drag windows to snap into layouts. 

Passwords app – centralized password manager across system. 

Videoconferencing tools – enhanced FaceTime and third-party app support. 

Safari improvements – Highlights, distraction-free Reader, streamlined browsing. 

Messages upgrades – scheduling and rich text formatting. 

Game Mode – optimized performance for gaming sessions. 

Photos – memory movies – AI-created movies from your photos. 

Image Playground & Genmoji – create images and custom emojis. 

Mail Categorization – sort emails into smart categories. 

Home app enhancements – guest access, robot vacuum controls. 

Privacy settings revamp – more intuitive privacy control menus. 

New widgets & emoji – Podcasts widgets and fresh emoji options. 

Desktop Widgets – Add widgets directly to your desktop.

Game Mode – Prioritizes performance for gaming.

Safari Profiles – Separate browsing for different topics.

Video Conferencing – Present yourself over your shared screen.

Web Apps – Add favorite websites to your Dock.

Passwords – Share passwords and passkeys with groups.

Enhanced Private Browsing – Locks private windows when not in use.

New Screensavers – Slow-motion aerial videos become wallpapers.

Messages – Search filters, swipe to reply, Live Stickers.

Autocorrect – Improved accuracy with a new language model.

Notes – View full-width PDFs and link to other notes.

Reminders – Create intelligent grocery lists.

Photos – People & Pets album now includes cats and dogs.

Stage Manager – Automatically organizes all apps and windows.

Continuity Camera – Use iPhone as your Mac's webcam.

Mail App – Schedule send and undo email sending.

Passkeys – Passwordless sign-in for apps and websites.

Messages – Unsend or edit a message after sending.

Spotlight – Enhanced image search and Quick Actions.

iCloud Shared Photo Library – Share photos with up to five people.

System Settings – Completely redesigned to look like iOS.

Freeform – New collaborative brainstorming app.

Handoff – Transfer FaceTime calls between your devices.

Metal 3 – Enhanced gaming performance with new technologies.

Weather and Clock – New apps now on the Mac.

Rapid Security Response – Urgent security fixes without a full update.

Universal Control – Use one keyboard and mouse across devices.

SharePlay – Share screen, music, and movies on FaceTime.

Shortcuts App – Automate daily tasks on your Mac.

Live Text – Copy and paste text from photos.

Focus – Filter notifications to stay on task.

AirPlay to Mac – Use your Mac as an AirPlay receiver.

Safari – New Tab Groups and streamlined design.

Quick Note – Create notes system-wide, anywhere.

Mail Privacy Protection – Hides your IP address and location.

iCloud Private Relay – Private browsing in Safari and Mail.

FaceTime – Spatial audio, Portrait Mode, and Voice Isolation.

Shared with You – See shared content in apps.

Redesigned Interface – The biggest redesign since Mac OS X.

Control Center – Get quick access to system controls.

Safari – Faster performance with a customizable start page.

Messages – Pin conversations, mentions, and inline replies.

Notification Center – Interactive notifications and iOS-style widgets.

Maps – Get guides, Look Around, and indoor maps.

Privacy Labels – See app privacy details on the App Store.

New System Sounds – Completely redesigned startup chime and alerts.

Faster Updates – Starts updates in the background.

32-bit App Removal – Ends support for all 32-bit applications.

Sidecar – Use your iPad as a second display.

iTunes Split – Replaced by Music, TV, and Podcasts apps.

Project Catalyst – Easily port iPad apps to Mac.

Voice Control – Control your entire Mac with your voice.

Screen Time – Track and manage your app usage.

Find My – Combines Find My Friends and Find My iPhone.

Security – System runs on a separate read-only volume.

Photos App – Redesigned to intelligently showcase your best pictures.

Reminders App – The app gets a major overhaul.

Mail App – Block senders and mute threads.

Dark Mode – A dramatic dark color scheme system-wide.

Desktop Stacks – Automatically organizes files into neat groups.

Dynamic Desktop – Wallpaper changes to match the time of day.

Mac App Store Redesign – New interface with editorial content.

Group FaceTime – Video and audio calls with up to 32 people.

Continuity Camera – Use your iPhone to take a picture.

Gallery View – View file metadata in the Finder.

New Apps – News, Stocks, Home, and Voice Memos.

Enhanced Screenshots – New on-screen controls and video recording.

Privacy Protections – Apps require permission to access data.

Apple File System (APFS) – New file system for reliable storage.

HEVC (H.265) – Efficient video compression for 4K video.

Metal 2 – The next generation of graphics API.

Photos – Redesigned interface and powerful new editing tools.

Safari – Intelligent tracking prevention and auto-play blocking.

VR Support – First-ever VR content creation on Mac.

Mail – Messages take up 35% less storage space.

Siri – More natural voice and learns your preferences.

Notes – Add simple tables and pin important notes.

Spotlight – Get flight status information.

Siri on the Mac – The personal assistant is now on Mac.

Universal Clipboard – Copy and paste content across Apple devices.

Optimized Storage – Automatically free up space on your Mac.

Auto Unlock – Unlock your Mac with your Apple Watch.

Apple Pay for Web – Use Apple Pay for secure online purchases.

Tabs for Apps – Tabs for more apps, like Maps and Mail.

Picture in Picture – Float a video window over your desktop.

iCloud Drive Desktop – Sync your Desktop and Documents folders.

Photos Memories – Automatically create curated collections of your photos.

Split View – Work with two apps side-by-side.

Metal for Mac – Next-generation graphics technology.

Mission Control – Streamlined window organization and management.

Notes App – Add checklists, photos, and web links.

Spotlight Search – Enhanced with natural language support.

Safari – Pin favorite sites and mute audio.

Mail App – Swipe to delete messages like on iOS.

Photos – Supports third-party editing extensions.

System Integrity Protection – "Rootless" security for system files.

Redesigned Interface – A flatter, more modern translucent look.

Continuity – Seamlessly work across all your Apple devices.

Handoff – Start on one device, continue on another.

Phone Calls – Make and receive calls on your Mac.

SMS Messaging – Send and receive texts on your Mac.

iCloud Drive – All your files stored in the cloud.

Notification Center – "Today" view with interactive widgets.

Spotlight – New search bar in the center of the screen.

Safari – Redesigned interface and improved performance.

Mail – Markup attachments and Mail Drop for large files.

Finder Tabs – Combine multiple Finder windows into one.

Tags – Organize and find files with colored tags.

Multiple Displays – Full menu bar and Dock on all screens.

iCloud Keychain – Securely stores your passwords and credit cards.

App Nap – Saves battery life by pausing inactive apps.

Compressed Memory – Automatically compresses inactive data for performance.

iBooks App – Your entire iBooks library is now on Mac.

Maps App – Adds Maps to the Mac for directions.

Redesigned Calendar – A major overhaul for the app.

Messages – Replaces iChat with iMessage functionality.

Notification Center – A unified alert system from iOS.

iCloud – Deeper integration for documents and data.

AirPlay Mirroring – Wirelessly stream your display to Apple TV.

Gatekeeper – A new security feature to block malware.

Reminders – A new standalone app for to-do lists.

Notes – New app for creating and syncing notes.

Game Center – Play multiplayer games with friends.

Share Sheets – System-wide sharing to social media.

Mission Control – Combines Exposé, Dashboard, and Spaces.

Launchpad – iOS-style grid for launching apps.

Full-Screen Apps – Distraction-free, immersive, full-screen mode.

Multi-Touch Gestures – New gestures for trackpads.

Auto Save & Versions – Saves documents automatically.

Resume – Re-opens apps and windows after a restart.

AirDrop – Wirelessly share files with nearby Macs.

Reversed Scrolling – Content moves in direction of finger.

Finder – New "All My Files" folder.

FaceTime – Now included in the operating system.

64-bit Architecture – System-wide support for 64-bit processors.

Grand Central Dispatch – Optimized for multi-core processors.

OpenCL – Use your GPU for general-purpose computing.

Microsoft Exchange Support – Built-in support for business email.

QuickTime X – A new, redesigned media player.

Finder Rewrite – The Finder was rewritten in Cocoa.

Smaller Footprint – Frees up to 7GB of drive space.

Mac App Store – The application marketplace for Mac.

Faster Performance – Overall speed and responsiveness improvements.

Time Machine – An automatic backup utility.

Boot Camp – Run Windows on Intel-based Macs.

Spaces – Create multiple virtual desktops.

Stacks – New Dock feature for organizing files.

Redesigned Finder – Features like Cover Flow and new sidebar.

Front Row – Reworked to resemble the Apple TV interface.

Quick Look – Preview files without opening an app.

Redesigned Dock – New 3D and reflective look.

Dashboard – Now with Web Clip for creating widgets.

Spotlight – A new full-text and metadata search engine.

Dashboard – A new layer for mini-applications called widgets.

Automator – Automate repetitive tasks without scripting.

Safari RSS – Built-in RSS reader for web feeds.

VoiceOver – A new screen reader for visual impairment.

QuickTime 7 – New version with H.264 support.

iChat AV – Supports multi-way audio and video conferencing.

Dictionary App – Built-in dictionary and thesaurus.

Grapher – A new app for 2D and 3D graphs.

Exposé – A new window management feature.

Fast User Switching – Switch users without logging out.

iChat AV – Adds audio and video conferencing.

Finder – New brushed-metal interface with a sidebar.

FileVault – On-the-fly encryption for your home folder.

Secure Empty Trash – Securely erases deleted files.

Mail App – Adds junk mail filtering.

Font Book – A new font management application.

TextEdit – Now compatible with Microsoft Word documents.

iChat – Instant messaging client compatible with AIM.

Address Book – A system-wide address book.

Finder – Enhancements like spring-loaded folders and search.

Quartz Extreme – Graphics compositing on the video card.

Rendezvous – Network service discovery (later Bonjour).

Mail App – Improved spam filtering.

QuickTime 6 – Adds MPEG-4 support.

Universal Access – Accessibility features for disabled users.

Common Unix Printing System – A new printing system.

Performance Enhancements – Faster app launch and system responsiveness.

DVD Playback – Watch movies on your Mac.

CD Burning – Burn data CDs and DVDs from the desktop.

Digital Camera Support – Improved support for digital cameras.

Interface Improvements – Tweaks for a better user experience.

Networking Features – Better connectivity and ease of use.

System Stability – Major bug fixes and improved reliability.

Native Software – Bundled with iDVD 2 and iMovie 2.

Dock Features – New contextual commands for Dock icons.

Aqua Interface – New, water-themed visual user interface.

The Dock – New way to launch and switch apps.

Protected Memory – Prevents one app from crashing another.

Pre-emptive Multitasking – Better management of multiple tasks.

PDF Engine – PDF support is built-in at the core.

Mail App – New email client for the Mac.

TextEdit – A new text editor app.

Address Book – Contacts are stored system-wide.

Terminal – Unix-based command line interface.