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 robust open-source video conferencing tool that excels in features like encryption and multi-participant conferencing, while MicroSIP is a lightweight SIP-based solution focused on call quality and resource efficiency. Jitsi is ideal for larger meetings and collaborations, whereas MicroSIP is suited for individual or small team calls.