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Zoiper vs Jami: catalog facts
Zoiper	Jami
Freemium Free softphone, with paid versions sold on the Zoiper site.	Free Free software under the GPLv3 or later. A GNU project with no paid tier.
Windows, macOS, Linux, Android, iOS, Browser extension	Windows, macOS, Linux, Android
Native apps on desktop and mobile TLS, SRTP and ZRTP call encryption	Completely peer to peer, with no server relaying data between users No phone number or email needed to create an account
Proprietary, with some features in paid editions Encryption depends on server support	Peer-to-peer delivery means messages to an offline device wait until it reconnects Connection reliability varies more than with a server-relayed service
Downloadable app, Browser extension	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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