#50 in Collaboration & CommunicationUpdated 2026-08

Linphone

by Linphone · Open-source VoIP, instant messaging and video conferencing, built in France

35.8 — BenchRank score out of 100

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Overview

Linphone is an open-source real-time communications stack covering IP telephony, instant messaging and video conferencing. It is published as a softphone app, the Liblinphone VoIP/IM SDK and the Flexisip server suite, so teams can use the app, embed calling in their own products or build a white-label softphone with an administration platform.

Best for: Organisations and developers who need open-source SIP voice, video and messaging they can embed
Pricing: No prices are shown; the app and SIP service are described as free, and the enterprise suite is presented through a demo request and contact form.
Runs on: WebiOSAndroidmacOSWindowsLinux

Strengths and trade-offs

Strengths

Open source softphone, Liblinphone SDK and Flexisip server
App and SIP service are free to use for end users
Post-quantum end-to-end encryption and secure authentication
French vendor since 2001, 20+ engineers, paid support available

Trade-offs

No prices published; the enterprise suite is sold via a demo request
Captured pages are in French, with English as a separate site version
Free users get a FAQ and community space rather than paid support

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 0 out of 100
Documentation: 45 out of 100
Agent friendliness: 58 out of 100
Pricing transparency: 15 out of 100
Changelog: 100 out of 100
Marketing site structure: 40 out of 100
Operational trust: 15 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 40 out of 100
Maintenance: 15 out of 100

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