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MicroSIP vs Jami: catalog facts
MicroSIP	Jami
Free Free and open source under the GPL v2.	Free Free software under the GPLv3 or later. A GNU project with no paid tier.
Windows	Windows, macOS, Linux, Android
Small and light on system resources Works with standard SIP providers and PBX systems	Completely peer to peer, with no server relaying data between users No phone number or email needed to create an account
Windows only; other desktops need Wine No mobile apps	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	Downloadable app
Open source	Open source
License: GPL-2.0	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 23, 2026	Official website Full listing and sources Checked September 21, 2026

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