Psi is a free (as in freedom) XMPP chat app. It is fast and lightweight, and works on Windows, Linux, and macOS. It has full unicode support and easy file transfers.
- Open Psi.
- If you already have an existing account, click on
Register new account.
- You can pick a server from the list of free XMPP servers. In this example, we use
- Choose your username and password:
- Your account has been created: