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swiftlang/swift

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cached 2026-03-30T11:55:57.905Z
3mo ago

swiftlang/swift

swiftlang/swift is the upstream Swift language repository: the main implementation of the Swift programming language, with active development as of 2026-03-30 and a very large community footprint (69,866 stars, 10,692 forks). It is not archived. Forks are most likely interesting if you care about compiler/runtime work, standard library changes, tests, or contributing to the language ecosystem.

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Stars69,866
Forks10,692
Default branchmain
Last pushed2026-03-30T06:21:45Z
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Choose this fork if your goal is WebAssembly Swift delivery and you value the fork’s distribution/CI focus over staying current with upstream. Avoid it if you need near-mainline Swift, frequent upstream merges, or the latest compiler/runtime behavior.

Choose this fork only if your goal is Android porting research or a resurrection project. For any practical Swift work, upstream is the clear choice: this fork is stale, massively behind, and appears to add no maintained code in the provided snapshot.

Prefer this fork if your goal is Windows Swift enablement and you need the fork’s platform-specific build/runtime work. Prefer upstream if you want current Swift features, active maintenance, or a broadly supported source base.

Choose this fork only if FreeBSD support from this older Swift lineage is the goal. For general Swift compiler work, production use, or anything needing current language/runtime behavior, upstream is the better choice by a wide margin.

Prefer upstream unless you specifically need an old snapshot of Swift. This fork offers no evident added capabilities, but it does carry a large maintenance lag that makes it a poor choice for adopters who need current compiler, runtime, or tooling behavior.

Prefer upstream unless you specifically need an old frozen snapshot; this fork does not show evidence of added capabilities and is far too stale for normal Swift development or toolchain use.

Choose the upstream repository unless you specifically need an older frozen snapshot. This fork adds no visible capabilities and omits a very large amount of active upstream work, so it is not a good adoption target for current Swift development.

Choose this fork if your goal is a Swift toolchain adapted for baremetal/embedded use. Avoid it if you want current upstream Swift, broad platform compatibility, or low-maintenance adoption.

Do not adopt this fork for active development. Choose upstream Swift unless you specifically need a frozen 2021 snapshot and are prepared to shoulder the maintenance gap yourself.

Prefer this fork only if you want the specific experimental changes it contains or need a historical Swift research branch. If you want a current Swift foundation for product work, upstream is the better choice because this fork is massively behind and likely stale.