Visual Studio Live Share, announced as public beta three weeks and one day ago, is a game changer that is hard to overestimate. This is much bigger news than when GitHub announced Teletype for Atom in November 2017. Both tools allow one host and multiple guests to view and collaborate on files at the same time, but Visual Studio Live Share goes beyond that by allowing you to also share your computer’s local servers and port numbers — any of your choosing. For example, if you have a NodeJS server running on localhost:9000, or a Ruby on Rails server running on localhost:8080, or a Hugo server running on localhost:1313, you can share any of those with another developer on another network and another operating system. All they have to do is click a link that you provide, fire up a browser to the right port on localhost, and they’ll see exactly what you see on your own computer. Zero setup or configuration on their part required. It’s kind of like turning your computer into a server, except there’s zero hassle and full security. All the host and guest(s) need is VSCode installed, and that’s a fast free download. It’s been a while since I’ve been this excited about something in tech. I wish I’d had this in college. It would’ve been immensely useful.