Your Jabber ID (JID) is formatted like an email address. Pick a username and add
@0nl1ne.at to it:
Most clients will find the server on their own using DNS. Just type your JID and password to log in. If your client asks for the server settings manually, use these:
| Port | Direction | Security | Notes |
|---|---|---|---|
| 5222 | Client to Server | STARTTLS | Main client connection port |
| 5223 | Client to Server | Direct TLS | Legacy SSL, fallback option |
| 5269 | Server to Server | TLS | Federation with other XMPP servers |
myroom@conference.0nl1ne.at.
Accounts are created through the registration portal. Pick a username and set a password to get started.
Register an AccountXMPP, originally called Jabber, is an open messaging protocol that has been around since 1999. The IETF maintains it under RFC 6120 and RFC 6121. It works much like email: your account here can send and receive messages from users on any other XMPP server in the world, with no central company owning or controlling the network.
- No vendor lock-in, backed by open international standards.
- Decentralised, so no single point of failure or control.
- Supports voice calls, video, file sharing, and group chat via XEP extensions.
- Running reliably worldwide for over 25 years.
All of the clients below support OMEMO end-to-end encryption and work well with this server. Click a card to visit the project's website.