Apple

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

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

The Package Manager for the Swift Programming Language

The Swift Programming Language

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

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

Automated tests for validating the generated Swift snapshots behave correctly

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

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

Python Kerberos library used by CalendarServer

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

Plugin and runtime library for using protobuf with Swift

Official CUPS Sources

The Calendar and Contacts Server.

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

CalDAV/CardDAV Testing Tool Used by CalendarServer

Python Framework for macOS APIs used by CalendarServer

Twisted SecureTransport library used by CalendarServer

Python iCalendar library used by CalendarServer

Extensions to Twisted used by CalendarServer

CalDAV/CardDAV Testing Framework used by CalendarServer

Plugin for Google's conformance test to verify compatibility of swift-protobuf

Example package for use with the Swift Package Manager

Moved to apple/swift-protobuf

Example package for use with the Swift Package Manager