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Linphone vs tSIP: catalog facts
Linphone	tSIP
Free The app and the basic SIP service are free.	Free Free and open source under the BSD 3-Clause licence.
Windows, macOS, Linux, Android, iOS	Windows
Works with any standard SIP account Desktop and mobile builds from one project	Portable and small, with JSON settings Programmable buttons and BLF like a bench phone
Needs a SIP account or PBX to be useful Website is primarily in French	Windows only Basic version has no video support
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: BSD-3-Clause
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 2, 2026

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