https://www.bleepingcomputer.com/news/security/decentralized-matrix-messaging-network-says-it-has-115m-users/

The team behind the Matrix open standard and real-time communication protocol has announced the release of its second major version, bringing end-to-end encryption to group VoIP, faster loading times, and more.

Additionally, the Synapse open-source Matrix homeserver's opt-in usage reporting indicates that unique matrix IDs on the public network have surpassed 115 million, indicating massive growth of the protocol.