Linphone key facts
Last updated- Legal entity
- Belledonne Communications SARL
- Headquarters
- France (FR)
- Ownership
- Independent
- Founded
- 2010
- Data hosting
- France
- Infrastructure
- Self-hosted / Proprietary (sip.linphone.org)
- Deployment
- Self-hosted
- Open source
- Yes
- US Cloud Act exposure
- Low (no US parent)
- Replaces
- Skype, Microsoft Teams Phone, Cisco Webex Assistant, Zoiper
About Linphone
Linphone is a comprehensive open-source internet communication system developed by Belledonne Communications, based in Grenoble, France. Originally created in 2001, it has evolved into a professional-grade suite including a softphone application for all major platforms (iOS, Android, Windows, macOS, Linux), a versatile SDK (Liblinphone), and a server-side implementation (Flexisip). The service is built entirely on open standards like SIP, ensuring interoperability and avoiding vendor lock-in common with proprietary competitors. The platform distinguishes itself through a heavy emphasis on security and digital sovereignty. It features industry-leading encryption including bZRTP for media and LIME for messaging, and was the first open-source softphone to integrate post-quantum cryptography (CRYSTALS-Kyber). As a fully European-owned and operated entity, Belledonne Communications provides a critical alternative to GAFAM-based communication tools, offering on-premise deployment options for organizations requiring total control over their data flows and metadata.
Alternative to
Target Segments
Deployment Options
Hosting & Security
Self-hosted / Proprietary (sip.linphone.org)
Key Features
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