Fizz, the tool we built to help us work remotely
compose.ioNice concept. Indeed for remote working teams (read asynchronous working team) slack is not enough. We experiment now with basecamp+slack for the reasons you mentioned: measure work progress, milestones, announcements.
Am I missing a link to the code or is this not available?
It's not [0] open-source, unfortunately!
It will be. It's just crufty and overly specific to us right now and needs some tidying up.