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Loopback vs JACK Audio Connection Kit: catalog facts
Loopback	JACK Audio Connection Kit
Paid Requires a paid license or subscription. Trial availability and licensing depend on the…	Free Free and open source. Hosting, hardware and any external services are separate.
macOS	Linux, macOS, Windows
Provides a visual audio-routing interface Routes sources into virtual devices for other apps	Routes audio between compatible applications Supports low-latency production workflows
Requires a paid license and macOS audio permissions.	Requires compatible applications and careful device configuration.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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