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 a user-friendly, open-source video conferencing tool with strong integration capabilities, while Tox is a decentralized communication platform prioritizing privacy and security. Jitsi is ideal for larger, organized meetings, whereas Tox caters to users who value privacy and peer-to-peer communication.