---
id: kb-2026-00080
title: Swift Programming Language
schema_type: TechArticle
category: computer-science
language: en
confidence: medium
last_verified: "2026-05-28"
created_date: "2026-05-22"
generation_method: human_only
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-computer-science-01
    statement: >-
      Swift is a general-purpose programming language suitable for systems programming, mobile and desktop apps, and
      cloud services.
    source_title: About Swift | Swift.org
    source_url: https://www.swift.org/about/
    confidence: medium
  - id: fact-computer-science-02
    statement: >-
      Swift.org describes The Swift Programming Language book as the authoritative Swift reference, including a guided
      tour, language guide, and formal reference.
    source_title: Documentation | Swift.org
    source_url: https://www.swift.org/documentation/
    confidence: medium
  - id: fact-computer-science-03
    statement: >-
      The Swift project published Swift, supporting libraries, debugger, and package manager under an open-source
      license on December 3, 2015.
    source_title: About Swift | Swift.org
    source_url: https://www.swift.org/about/
    confidence: medium
completeness: 0.88
known_gaps:
  - This public article was narrowed to source-mapped claims during a targeted evidence repair pass.
disputed_statements: []
primary_sources:
  - title: About Swift | Swift.org
    type: documentation
    year: 2026
    url: https://www.swift.org/about/
    institution: Swift.org
  - title: Documentation | Swift.org
    type: documentation
    year: 2026
    url: https://www.swift.org/documentation/
    institution: Swift.org
  - title: The Swift Programming Language
    type: documentation
    year: 2026
    url: https://docs.swift.org/swift-book/documentation/the-swift-programming-language/
    institution: Swift.org
secondary_sources: []
updated: "2026-05-28"
---

## TL;DR

Swift is a general-purpose programming language documented by Swift.org for systems programming, app development, and cloud services. Its public documentation points to The Swift Programming Language as the authoritative language reference, and the project has been open source since December 2015.

## Evidence Notes

- Swift.org defines Swift's general-purpose scope and open-source project history.
- Swift.org documentation identifies the official language reference.
- The Swift language book is the project-maintained reference for language details.

## Further Reading

- [About Swift | Swift.org](https://www.swift.org/about/)
- [Documentation | Swift.org](https://www.swift.org/documentation/)
- [The Swift Programming Language](https://docs.swift.org/swift-book/documentation/the-swift-programming-language/)