I am building AsyncGo (https://asyncgo.com) which is still evolving but it is a kind of forum for businesses structured around having important conversations and documenting the decisions that come out of them.

I built it to have something simple and lightweight for discussions for remote teams, as an alternative to meetings and using more heavyweight methods like issues for conversations. It is still early days but there is a free tier, if you are interested and check it out I would love feedback.