Apple's Swift Programming Language Now Open Source

As promised, Apple has officially made its Swift programming language open source, making the project available through Swift.org.

swift_org

We are excited by this new chapter in the story of Swift. After Apple unveiled the Swift programming language, it quickly became one of the fastest growing languages in history. Swift makes it easy to write software that is incredibly fast and safe by design. Now that Swift is open source, you can help make the best general purpose programming language available everywhere.

Announced at WWDC 2014 and launched alongside iOS 8 and OS X Yosemite a few months later, Swift marks a significant step forward from the Objective-C previously favored by Apple.

On December 3, 2015, the Swift language, supporting libraries, debugger, and package manager were published under the Apache 2.0 license with a Runtime Library Exception, and Swift.org was created to host the project. The source code is hosted on GitHub where it is easy for anyone to get the code, build it themselves, and even create pull requests to contribute code back to the project. Everyone is welcome, even just to file a bug report. There are excellent Getting Started guides available here on the site as well.

The project is governed by a core team of engineers that drive the strategic direction by working with the community, and a collection of code owners responsible for the day-to-day project management. Technical leaders come from the community of contributors and anyone can earn the right to lead an area of Swift. The Community Guidelines includes detailed information on how the Swift community is managed.

With the open sourcing of Swift, Apple has also released a Linux port to expand access to the language. Apple has also begun sharing design guidelines related to the upcoming Swift 3, setting the stage for "a more cohesive feel to Swift development."

Update: Apple has published a press release announcing the news and Apple's Senior VP of Software Engineering, Craig Federighi, has done an interview with Ars Technica on Apple's decision to make Swift open source.

Tag: Swift

Popular Stories

iOS 26 on iPhone Feature

Here's When iOS 26 Rolls Out Today in Every Time Zone [Update: Out Now!]

Monday September 15, 2025 12:00 am PDT by
Update 10:06 a.m.: iOS 26 is rolling out now, though it may take a bit for all users to see it, so keep checking! Today's the day! Apple is about to release iOS 26, which will deliver the biggest redesign since iOS 7 and bring a range of new features and improvements to iPhones worldwide. It's Apple's biggest software update of the year, and Apple announced at last week's iPhone event that...
Tim Cook Rainbow

Apple Reportedly Plans to Launch These 10 Products in 'Coming Months'

Sunday September 14, 2025 8:45 am PDT by
Apple's annual September event is now in the rearview mirror, with the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air, Apple Watch Series 11, Apple Watch Ultra 3, Apple Watch SE 3, and AirPods Pro 3 set to launch this Friday, September 19. As always, there is more to come. In his Power On newsletter today, Bloomberg's Mark Gurman said Apple plans to release many products in the...
iOS 26 Battery Glass Feature

Apple Says Installing iOS 26 Might Impact Battery Life

Monday September 15, 2025 10:56 am PDT by
In the iOS 26 release notes, Apple is warning iPhone users that installing the new software might have a temporary impact on battery life, which is normal. A new support document explains that major iOS updates require background setup like indexing data and files for search, downloading new assets, and updating apps. Further, Apple says that new features could require more resources,...
apple n1 chip

Apple's New N1 Chip in iPhone 17, iPhone 17 Pro, and iPhone Air Has a Wi-Fi 7 Limitation

Saturday September 13, 2025 10:01 am PDT by
The latest iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air models are equipped with Apple's all-new N1 chip for Wi-Fi 7, Bluetooth 6, and Thread connectivity. However, the chip has a Wi-Fi 7 bandwidth limitation. According to FCC documents reviewed by MacRumors, the N1 chip in all of the new iPhone models supports up to 160 MHz channel bandwidth for Wi-Fi 7, short of the...
iphone 17 lineup

iPhone 17 Models Launch on September 19 With These New Features

Friday September 12, 2025 7:58 am PDT by
Apple will launch its new iPhone 17 lineup and ultra-thin iPhone Air in stores on Friday, September 19, and the company has already shown off the new devices at its fall event, which ran with the the tagline "Awe dropping." The iPhone 17 series brings a host of new features and enhancements. Here's a rundown of the biggest upgrades and changes: iPhone 17 Display Changes The iPhone...
iphone air all colors

iPhone Air and iPhone 17 Pro Now Facing Extended Delivery Estimates

Saturday September 13, 2025 11:43 am PDT by
iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air pre-orders began on Friday in the U.S. and many other countries. iPhone 17 Pro Max delivery estimates quickly slipped beyond the Friday, September 19 launch day for those who had yet to place an order, and now the rest of the new models have started to follow suit. As of shortly after 11:30 a.m. Pacific Time today, select iPhone 17, ...
iPhone 17 Pro Air Boxes

iPhone Air and iPhone 17 Pro Boxes Revealed

Sunday September 14, 2025 1:36 pm PDT by
T-Mobile President Jon Freier today shared real-world photos of Apple's boxes for the iPhone Air, iPhone 17 Pro, and iPhone 17 models, which launch on Friday. Image Credit: Jon Freier Apple has typically included iPhone box renders in its product environmental reports, but it did not do so for the latest models. However, Apple's iPhone Upgrade Program page does offer some images of the boxes, ...
AirPods Pro Firmware Feature

AirPods Pro 2 and AirPods 4 Get iOS 26 Features With New Firmware Update

Monday September 15, 2025 10:50 am PDT by
Apple today released updated firmware for the AirPods Pro 2 and the AirPods 4, introducing support for the new AirPods features that are included in iOS 26, iPadOS 26, and macOS Tahoe. The firmware has a build number of 8A356, and it replaces the current 7E93 firmware. With Apple's new software updates, the AirPods Pro 2 and the AirPods 4 support better audio quality for phone calls and...

Top Rated Comments

atari1356 Avatar
128 months ago
I've been programming almost exclusively in Swift for over a year now, and I write better, cleaner, safer code than with Objective-C. (especially with some of the additions they made with Swift 2.0) Love it.

Will be interesting to see how Swift is adopted on other platforms.
Score: 9 Votes (Like | Disagree)
Markoth Avatar
128 months ago
As I see it, Swift is an inferior language in most ways to most other languages. It has one thing going for it, which Obj-C had going for it too: you can write in the language, or you can't use Apple's App Stores (which means you can't publish on iOS at all).

Making it open source might fix a pain point - now it might end up being possible to write your code once in Swift and have it run everywhere - but only if people actually port it.

IDK. I'm sticking with C# in Unity 3D for cross platform game development and Python for server side code.
I'd recommend not digging your heels in on this issue, and reconsider. Swift results in far more stable code once you become familiar with the language and some of its new concepts (which admittedly does take some time!). You'll be thankful for taking the time do learn it in the long run!
Score: 8 Votes (Like | Disagree)
elmateo487 Avatar
128 months ago
While Swift surely has a long long way to go... Apple is moving fast, and I love it.

Swift is a breath of fresh air to code in.
Score: 5 Votes (Like | Disagree)
D.T. Avatar
128 months ago
I've been programming almost exclusively in Swift for over a year now, and I write better, cleaner, safer code than with Objective-C. (especially with some of the additions they made with Swift 2.0) Love it.

Will be interesting to see how Swift is adopted on other platforms.
Yeah, I just recently started a new app, ground up using Swift. I'm following most of my existing design patterns from my older apps written in Obj-C, and the improvements (old vs. new apps) are pretty astounding. :cool:
Score: 4 Votes (Like | Disagree)
dannyyankou Avatar
128 months ago
Did Taylor Swift write a letter to Apple?
Score: 4 Votes (Like | Disagree)
sledgehammer89 Avatar
128 months ago
Where is Xcode for iPad Pro for developing Swift Apps on iPad Pro?
Score: 3 Votes (Like | Disagree)