[esseph]

If there was a viable open source replacement for discord I would be using it today.

Same goes for slack.

[goldenarm]

I was referring to Mattermost, the Slack equivalent, which is quite mature and used at scale by some orgs around me.

[skydhash]

There’s zulip https://zulip.com/

[esseph]

That's a SaaS / Product.

https://zulip.com/self-hosting/

Similar to the GitLab model.

Example limitations:

> Mobile notifications without limitation for eligible communities

> Mobile notifications for up to 10 users for other organizations

[skydhash]

The app is open-source, so I guess it would be OK to deploy it yourself and thus register for your own notifications pipeline.

[odo1242]

There’s also Mattermost