We at Dgraph use Trello as well. TBH, the commenting on Trello is primitive compared to Discourse. We still comment on Trello when we're talking about specific

We at Dgraph use Trello as well. TBH, the commenting on Trello is primitive compared to Discourse. We still comment on Trello when we're talking about specific cards -- but if it needs thorough discussion, we always go to Discourse. In fact, it's pretty common for us to create Trello cards out of discussion at discuss.dgraph.io. Also note that we keep our Slack only for general chit chat. As soon as something becomes more "structured", we switch it to Discourse. We also actively encourage people to just create topics there instead of bringing it on Slack in the first place.