Simon Janes If I ever do find a need to self-host GitLab, there's a Slack alternative you can also self-host, gitlab.com/gitlab-... for mattermost.org

Mark Dain I never understood why everyone likes Slack. Doesn't it do the same job as HipChat?

John Olinda Well, I thought I had a profound idea to contribute to this conversation. Turns out I didn't. But hey, I'm here, so why waste the click?

Simon Janes You can at least install a HipChat for your own server, but is closed-source as best as I can tell. You can't do a private server instance with Slack.