Kosmos Chat is a service for chat rooms and instant messaging. The service is separate from the chat apps you can use with your account. With a Kosmos Chat account, in the form of firstname.lastname@example.org, you can chat with people on thousands of different servers.
The service is based on XMPP (also called Jabber when used for chat), meaning that most chat/messaging apps which support XMPP/Jabber will work with your account. Here are a few apps that we can recommend:
ChatSecure is a chat app for iOS, as the name suggests with a focus on security. Aside from OMEMO encryption, it also has experimental support for Tor directly in the app. 📦 Install it from the App Store
Linux / BSD
Dino is a modern and simple chat app for Linux. Full support for OMEMO encryption, and easy to use.
Beagle IM is a promising new chat app for macOS users. It's still a bit rough around the edges, but supports a lot of modern XMPP features.
Gajim is a full-featured chat app for Windows (also available on Linux and macOS). It has support for most modern XMPP features, including OMEMO encryption via an official plugin.
How to connect
Usually, you only need your user address and password to configure your chat application.
Your user address is email@example.com.
For advanced users and/or troubleshooting:
- C2S port
- 5222 (StartTLS), 5223 (TLS)
- S2S port
- Bosh URL
- In-band Registration
Multi-user Chat (MUC)
The server is host to a variety of chat rooms. The server's MUC domain is kosmos.chat. Thus, room addresses look like firstname.lastname@example.org. Only local users (with a kosmos.org address) are currently allowed to create chat rooms on kosmos.chat.
Come talk to us in email@example.com!
You can connect to the XMPP service directly from the Tor network. The configuration is the same as for clearnet, except for the server to connect to: