swiftlang/swift-corelibs-foundation

Some data may be outdated — see provenance labels.

The Foundation Project, providing core utilities, internationalization, and OS independence observed · 2026-09-30

github.com/swiftlang/swift-corelibs-foundation · C · Apache-2.0 (permissive) observed · 2026-09-30

Health v2 · maintenance only

88/100

Activity 97
Release rhythm 71
Longevity 100

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.

gap_med: 109
age_days: 3998
days_rel: 35
days_push: 21
n_releases_24m: 4

Full methodology

Adoption not part of the score

5439 stars · 1192 forks observed · 2026-09-30

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

The Swift Foundation project providing core utility classes, data structures, internationalization, and OS-independent APIs for the Swift language. It supplies the Foundation framework implementation for non-Darwin platforms where no Objective-C runtime exists.

Use cases

use Foundation APIs like URL, Data, and JSONDecoder on Linux
port Swift code from macOS to non-Apple platforms
get internationalization and locale support in Swift apps
access NSObject and NSKeyedArchiver compatibility APIs
build cross-platform Swift server or CLI applications

When to choose

you are developing Swift software for Linux, Windows, or other non-Darwin platforms
you need Foundation's core types and internationalization outside Apple operating systems
you maintain legacy Swift code relying on pre-Swift Foundation APIs like NSObject

When to avoid

you are building apps for macOS, iOS, or other Apple platforms - use the OS-provided Foundation instead
you need exact Objective-C Foundation behavior - this compatibility implementation is best-effort only

Facets

library · maturity active

internationalization serialization date-time file-system json parser developer-tools programming-languages cross-platform windows cross-platform swift foundation-framework standard-library icu nsobject toolchain localization linux

1 source

readme: https://github.com/swiftlang/swift-corelibs-foundation · fetched 2026-09-30 · 4e81c1979b9f

Member repositories

Repository	Role	Health v2
swiftlang/swift-corelibs-foundation	main	88

For agents

markdown · JSON · MCP: product_card(name="swiftlang/swift-corelibs-foundation")

Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem