Linphone
VoIP providers
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€3600 per 20-hour support/development pack
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- Information technology and software
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- Education and training
What is Linphone
Linphone is an open-source SIP softphone and VoIP client used to place and receive voice and video calls and send messages over IP networks. It targets individuals and organizations that want a standards-based client for SIP calling, including teams that run their own SIP infrastructure or integrate calling into custom applications. Linphone is available on desktop and mobile platforms and can be used with third-party SIP servers and VoIP services. It also provides SDKs and APIs for embedding VoIP and messaging capabilities into apps.
Open-source SIP client
Linphone is built around SIP and related open standards, which helps interoperability with many PBX and SIP trunk environments. The open-source model allows organizations to review code, self-host components where applicable, and avoid lock-in to a single proprietary calling stack. This can be a practical fit for IT teams that already operate SIP infrastructure and want a controllable endpoint.
Cross-platform endpoint coverage
Linphone provides clients for major desktop and mobile operating systems, supporting mixed-device deployments. This helps organizations standardize on one softphone experience across user devices without requiring a single vendor’s UC suite. It is commonly used for basic calling needs where a lightweight SIP client is sufficient.
SDKs for app embedding
Linphone offers SDKs that developers can use to embed VoIP and messaging features into custom applications. This supports product teams that need SIP-based calling inside their own UX rather than adopting a full contact-center or sales-dialer platform. It can reduce integration effort compared with building a SIP client from scratch.
Not a full VoIP service
Linphone is primarily a client and SDK, not a complete hosted VoIP provider with phone numbers, carrier services, and bundled administration. Organizations typically need a separate SIP server/PBX and a telephony provider for PSTN connectivity. Buyers looking for an all-in-one cloud calling service may find the scope narrower than many products in this category.
Limited contact-center features
Linphone focuses on endpoint calling and messaging rather than advanced contact-center capabilities such as omnichannel routing, workforce tools, QA, and deep CRM-centric dialer workflows. Teams that need built-in analytics, campaign management, or supervisor tooling usually require additional platforms. This can increase the number of systems to integrate and manage.
Requires SIP administration expertise
Successful deployment often depends on correct SIP configuration, NAT traversal, security settings, and interoperability testing with the chosen PBX/SIP provider. Organizations without in-house VoIP expertise may face longer setup and troubleshooting cycles than with fully managed cloud telephony suites. Ongoing maintenance can also depend on how the organization packages and supports the client internally.
Plan & Pricing
| Plan / Offering | Price | Key features & notes |
|---|---|---|
| Linphone (end-user softphone) | Free (open-source) | 100% open-source softphone for iOS, Android, Windows, macOS, Linux; freely downloadable and usable. |
| Liblinphone (SDK) — Proprietary license option | Contact sales / Custom pricing | Dual-licensing: AGPLv3 (free) or proprietary commercial license to avoid AGPL conditions; proprietary pricing not published — contact Belledonne Communications. |
| Professional services (customization, rebranding, support, Flexisip installation/config) | From €3600 for a 20-hour support/development pack (use within 3 months) | Services include custom white-label builds, Flexisip deployment, installation/configuration, and development help. Annual support contracts available (pricing varies; contact sales). |
| Flexisip online SIP service (sip.linphone.org) | Free | Free SIP accounts for Linphone users to test features; provided without service guarantees or commercial support. |
| Enterprise / White-label solutions (custom builds, large deployments) | Custom pricing | Enterprise deployments and SLAs require contacting sales / requesting a demo. |
Seller details
Belledonne Communications
Grenoble, France
2005
Private
https://www.linphone.org/
https://x.com/linphone
https://www.linkedin.com/company/belledonne-communications/
