Belledonne Communications SARL

Belledonne Communications SARL is a French software publisher that has specialized since 2001 in open-source real-time communication technology, focusing its entire product line on the Linphone ecosystem. The company’s flagship offering, Linphone, is a standards-based SIP client that provides encrypted voice and HD video calling, instant messaging, presence indication, multi-party audio/video conferencing, and file transfer across desktop, mobile, and embedded platforms. Typical deployments include carrier-grade VoIP service providers that embed the engine into white-label softphones, enterprises replacing legacy PBX systems with secure SIP trunks, IoT manufacturers adding voice intercom features to smart devices, and privacy-conscious individuals seeking an alternative to proprietary messaging apps. Because Linphone exposes a fully documented API and supports every major codec, encryption suite, and SIP extension, it is frequently integrated into call-center dashboards, telemedicine portals, and secure government communication networks. The same codebase is repackaged as SDKs for Android, iOS, Windows, macOS, and GNU/Linux, enabling developers to add VoIP capabilities without licensing fees. Belledonne complements the client with optional server components—Flexisip proxy/registrar, conference bridge, and push gateway—allowing organizations to build scalable, self-hosted communication infrastructures that interoperate with any SIP-compliant network. All source code is released under the GPL, ensuring transparency and community-driven improvements. The publisher’s software is available free of charge on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always installing the latest upstream build and permitting batch installation alongside other applications.