SimpleX Chat is an instant messenger that is decentralized and doesn’t depend on any unique identifiers such as phone numbers or usernames. Users of SimpleX Chat can scan a QR code or click an invite link to participate in group conversations.

-privacyguides.org

It’s clearly proving to be the most innovative technology when it comes to decentralized communication, in my opinion.

    • 7heo
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      fedilink
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      9 months ago

      https://simplex.chat/blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html

      messenger-comparison

      ¹ Repudiation in SimpleX Chat will include client-server protocol from v5.7 or v5.8. Currently it is implemented but not enabled yet, as its support requires releasing the relay protocol that breaks backward compatibility.

      ² Post-quantum cryptography is available in beta version, as opt-in only for direct conversations. See below how it will be rolled-out further.

      Some columns are marked with a yellow checkmark:

      • when messages are padded, but not to a fixed size.
      • when repudiation does not include client-server connection. In case of Cwtch it appears that the presence of cryptographic signatures compromises repudiation (deniability), but it needs to be clarified.
      • when 2-factor key exchange is optional (via security code verification).
      • when post-quantum cryptography is only added to the initial key agreement and does not protect break-in recovery.