Recently, a new, quite surprising report, "Announcing our new partnership with Slack" (or "Announcing an exciting new partnership and welcoming Hipchat and Stride users to Slack. We’re glad you’re here!") has just been released.
Slack definitely prevails over Stride. What do you think about this change?
You can try https://mattermost.com/
Yes. We are currently looking at getting them.
Could be considered:
Curious. Probably good. As long as there remain several big players in this market, innovation should continue.