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Mail is likely the default email app on your Mac, but just in case you have others downloaded, you can set the default reader. Here's how: Launch Mail from your dock or the Finder. Click Mail in the menu bar at the top of the screen. Click Preferences. Click the dropdown next to Default Mail Reader. Click the app you'd like to set as the default.

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1. Just go to the Mac App Store to learn about and download each extension. To start a project, simply select photos, an album, a memory, or even an existing project, and then choose the extension you want to use. Download third-party extensions from the Mac App Store.
2. Click, then choose App Store. The Mac App Store opens to a selection of third-party photo editing apps that are compatible with Photos. You can also choose from the apps listed in Extensions for Fast Photo Edits on the App Store.

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Work together

The BlueJeans desktop app provides an immersive video, audio, and web conferencing experience. BlueJeans’ rpm packages are signed with a GPG key. Please run 'rpm -import bluejeanspubkey.gpg' to import the key in case package management utility asks for a missing public key. BlueJeans meetings. (1) Are the filenames familiar? How about full name examples? (2) I added the file-extension tag, and removed the mac tag due to being implicitly obvious. (3) Which version of OS X are we talking about? – Jason Salaz Aug 4 '11 at 19:10. This is rarely necessary for average Mac users, particularly those who obtain their software from the Mac App Store or other trusted sources since the apps are certified, but verifying the digital signature of an app can be extremely helpful for users who get apps from third party sources.

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Notes are backed up with every change, so you can see what you noted last week or last month.

Markdown support

Write, preview, and publish your notes in Markdown format.

It’s free

Apps, backups, syncing, sharing – it’s all completely free.

Mac Os Extensions

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Mac Apps Download

View sample code to see how the latest Apple technologies are implemented.

• Adopting Menus and UIActions in your User Interface

  Add menus to your user interface, with built-in button support and bar-button items, and create custom menu experiences.

  iOS

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• Building a Feature-Rich App for Sports Analysis

  Detect and classify human activity in real time using computer vision and machine learning.

  iOS

  View code

• Building Widgets Using WidgetKit and SwiftUI

  Create widgets to show your app’s content on the Home screen, with custom intents for user-customizable settings.

  iOSMac Catalyst

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• Fruta: Building a Feature-Rich App with SwiftUI

  Create a shared codebase to build a multiplatform app that offers widgets and an app clip.

  iOSmacOS

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• Accessibility Design for Mac Catalyst

  Improve navigation in your app by using keyboard shortcuts and accessibility containers.

  iOSMac Catalyst

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• Adding Hardware Keyboard Support to Your App

  Enhance interactions with your app by handling raw keyboard events, writing custom keyboard shortcuts, and working with gesture recognizers.

  iOSMac Catalyst

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• Adding Shortcuts for Wind Down

  Reveal your app’s shortcuts inside the Health app.

  iOS

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• Asynchronously Loading Images into Table and Collection Views

  Store and fetch images asynchronously to make your app more responsive.

  iOSMac Catalyst

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• Building a Custom Peer-to-Peer Protocol

  Use Bonjour and TLS to establish secure connections between devices, and define a protocol for sending messages to play a simple game of Tic-Tac-Toe.

  iOS

  View code

• Building Custom Views in SwiftUI

  Create a custom view with data driven transitions and animations in SwiftUI.

  macOS

  View code

• Creating a Mobility Health App

  Create a health app that allows a clinical care team to send and receive mobility data.

  iOS

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• Creating Accessible Views

  Make your app accessible to everyone by applying accessibility modifiers to your SwiftUI views.

  iOSmacOS

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• Creating and Updating Complications

  Build complications that display current information from your app.

  iOSwatchOS

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• Creating NFC Tags from Your iPhone

  Save data to tags, and interact with them using native tag protocols.

  iOS

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• Customizing Scribble with Interactions

  Enable writing on a non-text-input view by adding interactions.

  iOS

  View code

• Detecting Hand Poses with Vision

  Create a virtual drawing app by using Vision’s capability to detect hand poses.

  iOSMac Catalyst

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• Detecting Human Body Poses in an Image

  Locate people and the stance of their bodies by analyzing an image with a PoseNet model.

  iOS

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• Developing a Safari Web Extension

  Customize and enhance web pages by building a Safari web extension.

  macOS

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• Displaying Human-Friendly Content

  Convert data into readable strings or Swift objects using formatters.

  iOSmacOS

  View code

• Drawing with PencilKit

  Add expressive, low-latency drawing to your app using PencilKit.

  iOS

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• Enhancing Your iPad App with Pointer Interactions

  Provide a great user experience with pointing devices, by incorporating pointer content effects and shape customizations.

  iOS

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• Implementing Alert Push Notifications

  Add visible alert notifications to your app by using the UserNotifications framework.

  iOS

  View code

• Implementing Background Push Notifications

  /mac-cocktail-startup-app.html. Add background notifications to your app by using the UserNotifications framework.

  iOS

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• Implementing Interactions Between Users in Close Proximity

  Enable an iPhone to measure the relative position of other iPhones.

  iOS

  View code

• Implementing Modern Collection Views

  Bring compositional layouts to your app and simplify updates to and management of your user interface with diffable data sources.

  iOSmacOSMac Catalyst

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• Inspecting, Modifying, and Constructing PencilKit Drawings

  Score users’ ability to match PencilKit drawings generated from text, by accessing the strokes and points inside PencilKit drawings.

  iOS

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• Integrating Your App with Siri Event Suggestions

  Donate reservations and provide quick access to event details throughout the system.

  iOSMac Catalyst

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• Loading and Displaying a Large Data Feed

  Consume data in the background, and lower memory usage by batching imports and preventing duplicate records.

  iOSmacOS

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• Managing Audio with SiriKit

  Control audio playback and handle requests to add media using SiriKit Media Intents.

  iOS

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• Messaging a Web Extension’s Native App

  Communicate between your Safari web extension and its containing app.

  macOS

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• Monitoring System Events with Endpoint Security

  Receive notifications and authorization requests for sensitive operations by creating an Endpoint Security client for your app.

  macOS

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• Providing Hands-free App Control with Intents

  Resolve, confirm, and handle intents without an extension.

  iOS

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• Receiving Voice and Text Communications on a Local Network

  Provide voice and text communication on a local network isolated from Apple Push Notification service by adopting Local Push Connectivity.

  iOSmacOS

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• Soup Chef: Accelerating App Interactions with Shortcuts

  Make it easy for people to use Siri with your app by providing shortcuts to your app’s actions.

  iOSwatchOS

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• SpeedySloth: Creating a Workout

  Start, stop, and to save workouts on Apple Watch with the Workout Builder API.

  iOSwatchOS

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• Supporting Multiple Users in Your tvOS App

  Store separate data for each user with the new Runs as Current User capability.

  tvOS

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• UIKit Catalog: Creating and Customizing Views and Controls

  Customize your app’s user interface with views and controls in UIKit.

  iOSMac Catalyst

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• Visualizing a Point Cloud Using Scene Depth

  Place points in the real-world using the scene’s depth data to visualize the shape of the physical environment.

  iOS

  View code

• Accelerating Ray Tracing Using Metal

  Implement ray-traced rendering using GPU-based parallel processing.

  iOSmacOS

  View code

• Adding Custom Functions to a Shader Graph

  Run your own graph functions on the GPU by building the function programmatically.

  iOS

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• Adjusting Saturation and Applying Tone Mapping

  Convert an RGB image to discrete luminance and chrominance channels, and apply color and contrast treatments.

  macOS

  View code

• Blurring an Image

  Filter an image by convolving it with custom and high-speed kernels.

  iOS

  View code

• Creating a Collaborative Session

  Enable nearby devices to share an AR experience by using a peer-to-peer multiuser strategy.

  iOS

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• Creating a Fog Effect Using Scene Depth

  Apply virtual fog to the physical environment.

  iOS

  View code

• Creating a Game with SceneUnderstanding

  Create AR games and experiences that interact with real-world objects on LiDAR-equipped iOS devices.

  iOS

  View code

• Creating a Metal Dynamic Library

  Compile a library of shaders and write it to a file as a dynamically linked library.

  iOSmacOS

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• Creating a Multiuser AR Experience

  Enable nearby devices to share an AR experience by using a host-guest multiuser strategy.

  iOS

  View code

• Equalizing Audio with vDSP

  Shape audio output using discrete cosine transforms and biquadratic filters.

  iOS

  View code

• Finding the Sharpest Image in a Sequence of Captured Images

  Share image data between vDSP and vImage to compute the sharpest image from a bracketed photo sequence.

  iOS

  View code

• SwiftShot: Creating a Game for Augmented Reality

  See how Apple built the featured demo for WWDC18, and get tips for making your own multiplayer games using ARKit, SceneKit, and Swift.

  iOS

  View code

• Tracking Geographic Locations in AR

  Track specific geographic areas of interest and render them in an AR experience.

  iOS

  View code

• Adopting Picture in Picture Playback in tvOS

  Add advanced multitasking capabilities to your video apps by using Picture in Picture playback in tvOS.

  iOStvOS

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• Capturing Stereo Audio from Built-In Microphones

  Configure an iOS device’s built-in microphones to add stereo recording capabilities to your app.

  iOS

  View code

• Creating a Slideshow Project Extension for Photos

  Augment the macOS Photos app with extensions that support project creation.

  macOS

  View code

• Editing and Playing HDR Video

  Support high-dynamic-range (HDR) video content in your app by using the HDR editing and playback capabilities of AVFoundation.

  iOSmacOS

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• Playing Haptics on Game Controllers

  Add haptic feedback to supported game controllers by using Core Haptics.

  iOS

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• Recording and Streaming Your macOS App

  Share screen recordings, or broadcast live audio and video of your app, by adding ReplayKit to your macOS apps and games.

  macOS

  View code

• Selecting Photos and Videos in iOS

  Improve the user experience of finding and selecting visual media by using the Photos picker.

  iOS

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• Writing Fragmented MPEG-4 Files for HTTP Live Streaming

  Create an HTTP Live Streaming presentation by turning a movie file into a sequence of fragmented MPEG-4 files.

  macOS

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• Autosizing Views for Localization in iOS

  Add auto layout constraints to your app to achieve localizable views.

  iOS

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• Autosizing Views for Localization in macOS

  Add auto layout constraints to your app to achieve localizable views.

  macOS

  View code

Mac Extensions List

Best Free Apps For Mac

• Determining Service Entitlement Using Node.js

  Determine a customer’s entitlement to your service, offers, and messaging by analyzing a validated receipt and the state of their subscription.

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