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 video calls and smart home integration, making it suitable for personal use and family communication. In contrast, TeamSpeak excels in voice communication and offers robust features for gaming and team collaboration, catering more to communities and professional teams.