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Linphone vs Calls: catalog facts
Linphone	Calls
Free The app and the basic SIP service are free.	Free Free and open source under the GPL-3.0-or-later.
Windows, macOS, Linux, Android, iOS	Linux
Works with any standard SIP account Desktop and mobile builds from one project	Handles both cellular and SIP calls Integrates with the GNOME desktop
Needs a SIP account or PBX to be useful Website is primarily in French	Linux only SIP calling needs an account with a VoIP provider
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-or-later
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 23, 2026	Official website Full listing and sources Checked October 1, 2026

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