Apps for your Mac are about to get a lot more amazing.

Innovation and creativity have always been at the heart of every Mac. As a result, our app developers have been inspired to build the most innovative and creative apps. With OS X Yosemite, we’re putting a powerful set of new tools and capabilities in the hands of developers, so the next generation of Mac apps will be the greatest yet.

Freeing developers to think outside the app.

Developers will have the opportunity to build features from their apps right into OS X, so you’ll have access to them even when you’re not using the app itself.

Widgets for Notification Center

Customize the new Today view in Notification Center with constantly updated information from sources you choose, such as news, sports scores, and more. You’ll be able to download these widgets from the Mac App Store.

Share Menu Extensions

App developers can now make new destinations like social sites and blogs available in the Share menu in all the apps you use on your Mac. Developers can even make app-specific share sheets to create a unique sharing experience.

Custom Actions

Apply an effect from a photo-retouching app to an image you’ve opened in Preview. Or get a quick language translation from one app while you’re writing in another. With Actions, developers can give you access to the capabilities of their apps from anywhere in OS X — without having to launch the app.

Making games better in every dimension.

Thanks to the new tools we’re giving game developers, you’ll have an even better time beating their new games.

SpriteKit

Sprites are the individual two-dimensional characters and animations that make up the graphical elements of casual 2D games. Our enhanced SpriteKit enables developers to create more battery-efficient, graphically rich, and fluidly animated games.

SceneKit

The best 3D games pull you into a believable world supported by a compelling story. Now game developers can give you immersive animated scenes that are bursting with effects and natural motions, using our enhanced SceneKit with a new particle system, physics capabilities, and more.

Improved Game Controller Support

Control your favorite Mac games wirelessly with your favorite Made for iPhone controller.* Simply connect your iPhone or iPod touch to the controller and it’s ready for use with any supported Mac game.

A brand-new programming language and developer tools.

Time is the most costly resource for developers creating new apps. Our goal was to help them spend that time better — by thinking of new things their apps can do instead of figuring out how to do them.

Swift

To spur the next generation of Mac apps, we’re introducing something entirely new: Swift, a programming language that’s not only powerful but expressive and intuitive to use. For app developers, it means a new level of creative freedom and improved performance. For you, it means a new level of apps.

Learn more about Swift

Xcode 6

Every app created for Mac and iOS is brought to life in the same place: a Mac app called Xcode. The latest version includes a suite of new tools that will let developers visualize apps as they’re building them, remove bugs more easily, maximize performance, and more.

Learn more about Xcode 6

CloudKit

Now developers have access to the full power of iCloud, giving you iCloud-connected apps with the ability to share their data between each other and between your devices.

Learn more about CloudKit

Shared Frameworks Between OS X and iOS

The days of wishing an app for your iOS device were available on your Mac — and vice versa — are numbered. Now it will be easier than ever for developers to share more code across the two platforms, while still building customized experiences for each one.

Learn more about iOS for Developers