WireMin

WireMin is a decentralized peer-to-peer social and messaging application that runs without central servers, needs neither a phone number nor an email to register, and derives identity from a locally generated seed key expressed as a 52-character account string.

Messages are relayed through several random devices before reaching the recipient, so the receiver sees an unfamiliar relay rather than the sender's address; content is end-to-end encrypted, offline messages sit on relays for 48 hours before being cleared, and contact lists and history are stored as ciphertext across participants' devices. It supports unlimited group sizes, file and long-video transfer without size caps, multi-device login, disappearing messages and encrypted voice and video calls. Version 2.1.1 in September 2026 removed the built-in Box feature along with performance and stability work.