Hello! I am looking for suggestions for Slack alternatives that meet the following (likely impossible) criteria:
Modern UI
Self-hosted FOSS
Actively developed, or at least stable and maintained
Comprehensive API for integrations
Non-shit strategy for determining which device to send notifications to
Regarding UI, I am hoping to find something with a more streamlined implementation of threaded conversations - this is my primary complaint with Slack.
I know there are tons of articles on Slack alternatives, but I'm hoping for a more technical perspective. Are there any Matrix-based options that are refined enough for a small team to rely on as primary method of communication?
Element/Matrix is pretty much what you're looking for if you need self hosted. Could also look into Jabber/XMPP or IRC but Matrix is going to be way more modern and useable.