Review on Floobits by Shane Minter

It's free! And it works really well with all my other tools like Airtable or Asana etc., so I can keep track of projects from any device without having to copy/paste into another tool every time I want to add something new.

Nothing at this point - yet I think they need more features when you're using multiple people collaborating in one doc. If price is not an issue for your use case (it should be), then definitely try out floobits. We were able to collaborate remotely better than we could have before because our team was spread across different states & countries.