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.

1. Open Psi.
2. If you already have an existing account, click on Accounts -> Manage Accounts.
3. Click Register new account.
   Attach:psi-accountsetup.png Δ
4. You can pick a server from the list of free XMPP servers. In this example, we use ircnow.org.
5. Click Next.
   Attach:psi-registeraccount.png Δ
6. Choose your username and password:
   Attach:psi-chooseusername.png Δ
7. Your account has been created:
   Attach:psi-success.png Δ
   Attach:psi-contacts.png Δ