this post was submitted on 21 Sep 2025
131 points (99.2% liked)
Sysadmin
11160 readers
292 users here now
A community dedicated to the profession of IT Systems Administration
No generic Lemmy issue posts please! Posts about Lemmy belong in one of these communities:
!lemmy@lemmy.ml
!lemmyworld@lemmy.world
!lemmy_support@lemmy.ml
!support@lemmy.world
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Slack is so overrated. Isn’t there similar open source software for this, that businesses could run from their own server?
Matrix
I recently went with Mattermost because its structure is a lot simpler and doesn’t use federation. Probably more than enough for most small use cases.
I’ve tried Matrix/Element in the past and imo, there’s way too much setup for simple little internal applications, even via docker.
FYI there are alternative matrix servers to Synapse. I'm playing around with Tuwunel, it's a single binary and you're done.
It uses rocksdb so you just give it a directory and it puts everything there,. ie no need to spin up a db. And there is a config option to disable federation if that's something you don't want.
Could it scale to thousands of concurrent users? Probably not but it seems to be the simplest chat app to self host I've found.
I’ll look into this. Thanks for the recommendation!