.swift

Low risk

Swift source code

Source for Apple's modern Swift language. First-choice for iOS, macOS, watchOS, and tvOS apps.

MIME types

text/x-swift

Category

code

What opens this file

Xcode
VS Code + Swift extension
Swift Playgrounds

How to open by OS

Windows

Preview Swift for Windows or WSL.

Mac

Xcode.

Linux

Swift for Linux packages.

Ios

Swift Playgrounds.

Android

No official support.

Safety notes

Swift itself is memory-safe, but C / Objective-C bridges can still leak undefined behaviour.

Common mistakes

Swift version compatibility can break even within the 5.x line. Pin swift-tools-version in Package.swift.
Stale Swift Package Manager dependencies accumulate CVEs — refresh and audit regularly.

Related extensions

References

Swift official site