Apache Wave
In terms of a modern day 'Wave' I don't understand why I had to find out about Slack <a href="https://slack.com/" rel="nofollow">https://slack.com/</a> from a Quartz article: <a href="http://qz.com/192948/slack-the-best-way-to-organize-your-business-communications-is-not-to-organize-them-at-all/" rel="nofollow">http://qz.com/192948/slack-the-best-way-to-organize-your-bus...</a>