Matrix

Audio and Video Chat with a modern interface.

Matrix is an open standard protocol for real-time communication. It allows for text messaging, audio and video calls and it provides bridges that allow inter-operation with other communication protocols. For example, it's possible for a Matrix-based service to send and receive messages to servers like Discord, IRC or Facebook Messenger.

Matrix servers also allow federation, which means that you can talk and message anyone that is using Matrix on any different server.