#41 in Collaboration & CommunicationUpdated 2026-08

Linphone

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

BenchRank score

42.2

Visit website See full Collaboration & Communication ranking

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

Pricing

Published plans and prices from Linphone’s own pricing page.

How this score is made up

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

MCP support
Whether an agent can drive the product through the Model Context Protocol, and how much setup that takes.
Documentation
Publicly reachable docs — coverage, freshness, code samples and machine readability.
Agent friendliness
How readable the site is to an automated client: llms.txt, structured data, server-rendered content, crawler access.
Pricing transparency
Whether real prices are published, self-serve signup exists, and usage costs are knowable without a sales call.
Changelog
A public, dated record of what shipped and when — the clearest signal that a product is still alive.
Marketing site structure
Whether the site answers a buyer's questions: clear positioning, the pages that matter, and accessibility.
Page speed
How fast the site loads for real visitors: Chrome UX Report 75th-percentile LCP, INP and CLS, with a Lighthouse mobile run standing in where a site has too little traffic for field data.
Operational trust
Status page and incident history, security disclosure, compliance and data-processing documentation.

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
Source availability, self-hosting, data export and open standards. Scored and shown, but not part of the composite — paid SaaS is not worse for being paid SaaS.
Maintenance
Release cadence and repository activity. Scored and shown, but not part of the composite — it is only measurable for open repositories.

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Where this comes from

The Linphone pages BenchRank reads when it scores the product — its documentation, release notes, status and security pages, and its repository where there is one.

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