Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application. Developed by University of Strasbourg (France), plus many others.
License: Open Source
Jitsi is an open-source video conferencing tool that emphasizes security and flexibility, making it suitable for teams looking for a free solution without limits. In contrast, Blink offers a more polished user experience with robust features, making it ideal for users seeking high-quality video and audio calls.