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Airfoil vs swyh-rs: catalog facts
Airfoil	swyh-rs
Paid Paid app from Rogue Amoeba, with a free download to try before purchase.	Free Free and open source under the MIT licence.
macOS	Windows, Linux
Sends audio from any Mac app, not only apps with built-in casting Plays to several speakers of different types in sync	Sends any desktop audio to DLNA and UPnP renderers Written in Rust and actively maintained
The sending app runs on macOS only Paid software	Only works with DLNA or UPnP capable receivers Network streaming adds some latency
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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