Mattermost: Open-source, on-premises, Slack alternative
I don't really get why there is so many Slack alternatives coming up these days.<p>On every post like this there is tons of comment linking to other Slack alternatives, it's not like this is gonna be _the_ Slack-alternative.<p>Here is a non exhaustive list :<p>RocketChat : <a href="https://news.ycombinator.com/item?id=9624737" rel="nofollow">https://news.ycombinator.com/item?id=9624737</a><p>Let's Chat : <a href="https://news.ycombinator.com/item?id=9040841" rel="nofollow">https://news.ycombinator.com/item?id=9040841</a><p>Friends : <a href="https://news.ycombinator.com/item?id=9461504" rel="nofollow">https://news.ycombinator.com/item?id=9461504</a><p>Gitter : <a href="https://news.ycombinator.com/item?id=6739074" rel="nofollow">https://news.ycombinator.com/item?id=6739074</a>