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?
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.