I like Zulip a lot, though its interface is a bit inscrutable.
I’m increasingly thankful Zulip exists as an open source alternative to other collaborative platforms. In the age of agents, it feels like a huge advantage that folks can take a robust platform as a base and customize it to their needs (and hopefully contribute back)!
Also, thanks for sharing about your experiences with agent-based contributions, both internally and externally. Super fascinating.
Be well!