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Swift vs .NET: catalog facts
Swift	.NET
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Compiles to native code with strong safety guarantees Toolchains for Linux, macOS and Windows	Cross-platform on Windows, Linux and macOS Covers web, desktop, mobile, cloud and games
Much of the library ecosystem targets Apple platforms	Parts of the wider ecosystem lean towards Microsoft tools and Azure Large install compared with lighter language runtimes
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.