Flamenet Messenger

A free end-to-end encrypted messenger. Signing up takes no phone number. A relay operator sees ciphertext and routing and holds no key that opens a message, and a client can reach a relay through an obfs4 bridge where the relay itself is blocked. Group features run on the same engine as direct messages: a group poll splits each vote into random shares, one per member, so no individual vote reaches anybody, including the person who asked. The iOS app, the Android app and the relay are all MIT licensed and anyone can run their own relay.