Nobody has said the word "slack" yet... but am I interpreting this correctly? An open source clone of slack? If so, it's very interesting. I wonder if they are taking any steps towards solving the "fragmentation" issue that slack teams seem to cause. I have a few contacts that are shared between 2-3 different slack teams and I can never remember where to find my PM conversations.

Edit: okay someone else did say "slack", should have refreshed the page before posting :)