Swift. A powerful open language that lets everyone build amazing apps.

Swift is a robust and intuitive programming language created by Apple for building apps for iOS, Mac, Apple TV and Apple Watch. It’s designed to give developers more freedom than ever. Swift is easy to use and open-source, so anyone with an idea can create something incredible.

Developers are doing great
things with Swift.

Swift is a fast and efficient language that provides real-time feedback and can be seamlessly incorporated into existing Objective-C code. So developers are able to write safer, more reliable code, save time and create even richer app experiences.

A beautiful app made using Swift. Thanks to its ease of use and real-time feedback, VSCO chose Swift to build the latest version of its photography app for iOS.

Great apps built
using Swift.

More and more developers are incorporating Swift code into their apps. And some are even building all-new apps entirely in Swift.

Airbnb
Khan
Academy
Clear
Sky Guide
LinkedIn
Kickstarter
Eventbrite
Hipmunk

Better performance
equals better apps.

Swift apps more than live up to the name. For instance, a common search algorithm completes much faster using Swift.

Up to 2.6× faster than Objective-C
Up to 8.4× faster than Python 2.7

10,000 integers found in a graph
using depth-first search algorithm*

Educators are adding Swift
to their curriculum.

Developers aren’t the only ones who’ve experienced the potential of Swift. Universities and academic institutions around the world teach with Swift and Xcode on Mac, empowering their students with the best tools to build amazing apps. And with Apple’s free Develop in Swift curriculum, the transition from introductory coding to app development with Swift has never been easier.

Universities and other tertiary education institutions that are incorporating Swift into their courses

  • Aberystwyth University
  • Borough of Manhattan
    Community College
  • California Polytechnic State University
  • Central Piedmont Community College
  • Foothill College
  • Full Sail University
  • Houston Community College
  • Ingésup
  • Lawson State Community College
  • Mesa Community College
  • Northwest Kansas Technical College
  • Plymouth University
  • RMIT University
  • Southern Methodist University
  • Stanford University
  • Technical University of Munich
  • Tecnológico de Monterrey
  • University of California, Santa Cruz

Swift is everywhere.
And now it’s open for everyone.

Swift is free and open-source, and it’s available to a wide audience of developers, educators and students under the Apache 2.0 open-source licence. We’re providing binaries for macOS and Linux that can compile code for iOS, macOS, watchOS, tvOS and Linux. And to help Swift grow into an even more powerful language, we created a community where users can contribute directly to the Swift source code.

Join the community at Swift.org

Get started with Swift.

The Definitive Book

Download The Swift Programming Language for free from Apple Books. Learn how Swift makes programming easier, more flexible and more fun.

Download the free book

Xcode

Xcode is the Mac app used to build every other Mac app, and every iOS app too. It has all the tools you need to create an amazing app experience. And it’s available as a free download from the Mac App Store.

Download Xcode from the
Mac App Store

Developer Website

Get detailed technical information and an advanced overview of Swift. Check out the developer blog and stay up to date on the latest news. And enjoy free access to great resources like guides, videos and sample code.

Learn more

Everyone Can Code

A new approach to coding that gives everyone the power to learn, write and teach code.

Learn more

Swift Playgrounds

Learn serious code on your iPad. In a seriously fun way.

Learn more