Ring (SFLphone) is an open-source SIP-compatible softphone and instant messenger for Linux, Microsoft Windows, OS X and Android. Developed by Savoir-faire Linux
License: Open Source
Ring is primarily designed for home security and integrates seamlessly with smart home devices, offering a user-friendly experience for video and voice calls. In contrast, Linphone provides robust privacy features and customization options, making it ideal for users who prioritize security and flexibility in their communication tools.