SimpleX Chat

SimpleX Chat Ltd is a London-based company that develops SimpleX, a decentralized messaging network and application platform designed to operate without any user identifiers. Unlike conventional messaging platforms, SimpleX assigns no user IDs—not even random ones—making it the first messaging network to offer this level of metadata privacy. The platform uses end-to-end encryption with the double-ratchet protocol and allows users to self-host servers, giving them full ownership of their contacts and communications.