Apple

The Swift Programming Language

This is the version of LLDB that supports the Swift programming language & REPL.

FoundationDB - the open source, distributed, transactional key-value store

A low-level build system, used by Xcode and the Swift Package Manager

The XCTest Project, A Swift core library for providing unit test support

Turi Create simplifies the development of custom machine learning models.

Official CUPS Sources

Plugin and runtime library for using protobuf with Swift

Index database library for use with sourcekit-lsp

Language Server Protocol implementation for Swift and C-based languages

This maintains proposals for changes and user-visible enhancements to the Swift Programming Language.

The Foundation Project, providing core utilities, internationalization, and OS independence

A Logging API package for Swift 5.

TLS Support for SwiftNIO, based on BoringSSL.

The libdispatch Project, (a.k.a. Grand Central Dispatch), for concurrency on multicore hardware

The Package Manager for the Swift Programming Language

Extensions for SwiftNIO to support Apple platforms as first-class citizens.

Useful code around SwiftNIO.

Event-driven network application framework for high performance protocol servers & clients, non-blocking.

The infrastructure and project index comprising the Swift source compatibility suite.

Automated tests for validating the generated Swift snapshots behave correctly

SwiftPM package for SwiftSyntax library.

Logging and communication to allow Swift toolchains to communicate with Xcode.

Stress testing utilities for Swift's tooling