ring.cx

Ring is a free and universal communication platform which preserves the users' privacy and freedoms.

    Official GNU package
    Released under GPLv3 licence
    Supported by an active community

    OpenDHT protocol
    Decentralized communication
    Peer-to-peer discovery and connection

    End-to-end encryption with authentification
    Identity managed by X.509 certificates
    Based on RSA/AES/DTLS/SRTP technologies