HACKER Q&A
📣 nobodyCloak

Best open-source alternative to Slack?


The idea of ceding total control over internal messaging to an external entity (especially for a startup or small company) has always gotten to me, but I’ve recently considered the possibility of using a self-hosted, open-source alternative to Slack. From what I’ve found in research, Rocket.chat seems like a good choice and relatively “easy” to set up. Do you use any self-hosting or open-source options? What’s your experience been like?


  👤 throwaway888abc Accepted Answer ✓
There are various discussions here on HN about this. Use search and product name (busy now).

https://mattermost.com/

https://zulip.com/


👤 dennajort
Never really tried but there is also https://element.io/enterprise-collaboration

👤 aussiedude
What's wrong with just using the chat app with your productivity suite? Example Google Chat for Workspace and Teams for 365?

👤 bitlax

👤 badcoder72684
Matrix and it's various clients like RIOT.

Still not amazing, clunky to setup


👤 pigeons
ejabberd

👤 sergiotapia
zulip