SimpleX - the first messaging platform that has no user identifiers, not even random numbers!

Security assessment was done by Trail of Bits in November 2022.

SimpleX Chat features:
<ol><li>end-to-end encrypted messages, with editing, replies and deletion of messages.</li><li>sending end-to-end encrypted images and files.</li><li>single-use and long-term user addresses.</li><li>secret chat groups - only group members know it exists and who is the member.</li><li>end-to-end encrypted audio and video calls.</li><li>private instant notifications.</li><li>portable chat profile - you can transfer your chat contacts and history to another device
(terminal or mobile).</li></ol>
SimpleX Chat advantages:
<ol><li>&lt;em&gt;Full privacy of your identity, profile, contacts and metadata:&lt;/em&gt; unlike any other
existing messaging platform, SimpleX uses no phone numbers or any other identifiers assigned
to the users - not even random numbers. This protects the privacy of who you are communicating
with, hiding it from SimpleX platform servers and from any observers.</li><li>&lt;em&gt;Complete protection against spam and abuse:&lt;/em&gt; as you have no identifier on SimpleX
platform, you cannot be contacted unless you share a one-time invitation link or an optional
temporary user address.</li><li>&lt;em&gt;Full ownership, control and security of your data:&lt;/em&gt; SimpleX stores all user data
on client devices, the messages are only held temporarily on SimpleX relay servers until they
are received.</li><li>&lt;em&gt;Decentralized network:&lt;/em&gt; you can use SimpleX with your own servers and still communicate
with people using the servers that are pre-configured in the apps or any other SimpleX servers.</li></ol>
You can connect to anybody you know via link or scan QR code (in the video call or in person)
and start sending messages instantly - no emails, phone numbers or passwords needed.

Your profile and contacts are only stored in the app on your device - our servers do not have
access to this information.

All messages are end-to-end encrypted using open-source double-ratchet protocol; the messages
are routed via our servers using open-source SimpleX Messaging Protocol.