Christ, they just don't get it... What we need isn't "apps for Slack" what we need is onprem Slack. Because sending confidential information to "the cloud" is all kinds of stupid and potentially violates a bunch of laws
folks at atlassian (hipchat) are already doing this...it depends which markets one pursuing...slack and hipchat are totally on different scale. Atlassian even didn't make hipchat user numbers public during IPO proceedings