Swift Language
@SwiftLang
Swift is a general-purpose programming language that's fast, modern, safe, and a joy to write. Designed for all, developed in the open.
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At last: a unified home for Swift documentation, pulling together the language reference, core libraries and tooling, and platform specifics into a single central home, no matter what you're building! Check it out and give us feedback:
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Circleback didn't port an app to Swift, instead using it as a portable systems layer that provides the connective tissue between an Electron UI and some underlying platform dependencies (ScreenCaptureKit on macOS, libobs on Windows). Interesting approach:
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Embedded Swift is a subset of Swift built for tiny, constrained hardware, with far smaller binaries while keeping the language you already know. Swift 6.4 brings it closer to full Swift than ever, supporting "any" types, untyped throws, and metatypes.
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What's the difference between a package index and a package registry? One helps you discover packages, the other hosts and serves them. 📦 A new post explains how they fit together. Read more:
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A busy summer for Swift continues. ☀️
In July:
• Task Stealers land in Swift Concurrency’s runtime.
• SwiftPM gets a package registry reference implementation.
• A talk about explicit ownership at PLDI 2026.
Read more:
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June was a big month for Swift: previews of Swift 6.4, Swift Package Index joining Apple, and a community project that brought Swift to a 1977 Apple II. Read more in our latest digest:
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Swift 6.3.3 is out now! 🔩 This maintenance release improves stability in the Swift REPL, concurrency, and key paths. More here:
Swift Package Index has become an essential part of the Swift ecosystem, and joining Apple strengthens it as it continues its mission. Learn more:
Memory-safe. 13% faster on average. ⚡️ The TrueType hinting interpreter in macOS and iOS has been rewritten in Swift, replacing the original C implementation. Pixel-perfect accuracy was validated across 27 million glyphs. And the results:
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A unified networking stack for Swift, layered from low-level I/O primitives, through common protocols, to a modern HTTP client and server API. ⚙️ That's what the new Networking workgroup is building. Interested in contributing? Join us:
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Training an LLM with Swift, with optimization techniques to match or exceed C performance. 🏎️ Plus Wasm updates, recently active Swift Evolution proposals, and a talk about the Temporal Swift SDK, in the latest edition of What’s New in Swift
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Need dynamic configuration for Swift services running on Kubernetes? Swift Configuration supports hot reloading, watching specific values, and more. Learn more on the CNCF blog:
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When you draw a stroke in Goodnotes on the web, you get the exact same curves and ink flow as on iPad, because it’s literally the same Swift code running on both. ✍️ Goodnotes engineer @kateinoigakukun shares how they built it with Swift and WebAssembly:
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Want to give back to the Swift community, or level up your open source skills? The 2026 Swift Mentorship Program is open! 🤝 Mentor others, or contribute to ANY Swift open source project as a mentee. Mentor surveys are due June 1! Learn more:
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Swift 6.3.2 is available! 🛠️ This maintenance release includes updates to Swift Package Manager and Swift Build, making it easier to load package resources on background threads. More here:
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Inside the latest ‘What’s new in Swift’ digest: two talks on Embedded Swift, a guest contribution highlighting a Swift client for Valkey, new packages, and more:
🆕Looking to add a fast, scalable, resilient, in-memory key-value store to your Swift project? Valkey just shipped a production-quality Swift client today: @valkey_io #server#
Announcing Swift 6.3.1, a maintenance release with reliability improvements. More details in the forum post here:
☕️ New update to the Swift Java interop tooling, with plentiful improvements for use in both server and Android scenarios: #java#
🆕The Swift extension is now live on the Open VSX Registry, enabling first-class Swift support in Cursor, VSCodium, AWS Kiro, and Google Antigravity.
That means code completion, refactoring, debugging, testing, and DocC support, wherever you code.🧑💻
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