Recommendations for an intranet only (unfederated) chat, for notifications and 2 users

• Gotify

  75 10,128 6.7 Go

  A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui) (by gotify)

  

There is gotify. If ok with going not fully self-hosted, telegram bots are good and simple. You can just use curl to send a message to telegram

• profanity

  20 1,259 8.9 C

  Ncurses based XMPP client

  

Or, there is profanity (https://profanity-im.github.io/) and there is a python library that makes things go quickly. I had a thought to have a plugin autoconnect the "bot" user to the server, start an omemo session with a user (or users), and listen on a local socket or something for messages to send over the omemo session. I had issues with the omemo enrollment/key exchange sticking though, which made it unreliable.

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• jackal

  38 1,439 0.0 Go

  Discontinued 💬 Instant messaging server for the Extensible Messaging and Presence Protocol (XMPP).

And here a single executable file that runs as XMPP server

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