“Cwtch is decentralized and focused on metadata-privacy in addition to communications privacy. Unlike other communication platforms, none of your messages are routed through a centralized server that has access to metadata such as your social network of friends, or who sent and received a particular message.”
Looks like it’s based on the onion-routed protocol used in Ricochet, so should be fairly robust (but not yet audited).
“A dark net or darknet is an overlay network within the Internet that can only be accessed with specific software, configurations, or authorization, and often uses a unique customized communication protocol. Two typical darknet types are social networks and anonymity proxy networks such as Tor via an anonymized series of connections.”
