A decentralized, peer-to-peer, encrypted chat in PHP.

Why this project?

Because we need to encrypt and secure the Internet. The Internet is broken and we need to fix it. Thanks people like Edward Snowden we know today that the NSA (and also other intelligence agencies too) operates a global surveillance on citizens. We can't loose our right of freedom, our right of privacy to centralized governmental authorities. Now it's our move. It's time to fight back!

I also like the Bitmessage project. But building thinks by myself feels like I can contribute to the Internet. And coding this with PHP because it's an easy-to-learn programming language and every one can contribute to this project.


  • Peer-to-peer instant messaging.
  • Peer-to-peer offline messaging. Offline means when the recipient is offline.
  • Decentralized: See DHT and Kademlia.
  • Encryption: SSL
  • Addressbook: manage all conversation partners.
  • IMAP interface for fetching new messages.
  • SMTP interface for sending messages.
  • Send P2P random messages.


  1. Clone

    git clone
  2. Change to your phpchat directory and run

  3. You need to forward TCP port 25000 (default) on your modem to your computer. After the chat has been started once there will be a settings.yml. Edit this file to change the incoming port. After changing the settings file you must restart the chat.

  4. Start:





You're welcome to contribute to this project. Fork this project at You should read GitHub's How to Fork a Repo.


Copyright (C) 2014 Christian Mayer

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see