Jitsi Meet is an open-source (Apache) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, scalable video conferences. Developed by Jitsi
License: Open Source
Jitsi Meet is primarily focused on video conferencing and is easy to use with browser support, while Riot.im (now known as Element) is a decentralized messaging platform that supports text, voice, and video communication with a strong emphasis on privacy and self-hosting.