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I started my graduation internship two weeks ago. My assignment is to look for a Slack alternative that'll be able to deploy on-premise. A lot of things need to be automated. I already did some research and found some interesting platforms like Mattermost, Zulip, Rocket.chat.
I was wondering if someone has any recommendations that really worth diving into? Also would like your extensive arguments about topics like user interface, integrations/webhooks/bots, security, scalability and so on.
TBH,
I would question the reason for it to be on-premise, since nowadays the trend is to look for SaaS solutions (so, nothing to maintain from an IT / Ops point of view).
Slack has a free plan as long as your team is not concerned about message retention or multi-calls/video.
I don't see the reason to have yet another piece of software to be installed/configured/maintained/patched/secured etc when there are so many players out there which lift all of this out (for a price, of course), so if this is a case of "my boss doesn't want it to be on the cloud/not under his control" or b***shit like that, I would question the real need for it to be on-prem.
Even the old Skype4Business (therefore, Microsoft) dropped its on-prem installation in favour of Teams through Office365...
Again, my thought.
