qube (spelled with all lower case letters) combines Slack with Zoom and office layouts in order to create a virtual collaborative working environment. It's designed for offices, which means you can't just jump into it as an individual; you need to access one that has been set up. As Mark Derbecker says on ProductHunt, "The gamechanger with Qube is 'presence'. When you're meeting with someone, everyone else can see who you're with and optionally put a 'watch' on you to get notified when you're free again. And the other person gets notified that you want to talk to them." I can't speak to price or usability or anything like that, but there's definitely something there that's interesting. See also the (unfortunately sparse) qube blog.