Yes! I maintain https://github.com/glimesh/broadcast-box for this.

You can try it out at https://b.siobud.com to see if you like it first. It if fits your needs then go for the self host :) I run my instance on Hetzner

I want to add more features to it, but I have been focused on OBS mostly lately. If you have any ideas/needs that would make it work for you and your friends I would love to hear! Join the discord and would love to chat.

What I want to do next is make a 're-broadcast feature'. So friends can stream to it + hang out. When they are ready they hit a button and then goes to Twitch/YouTube etc...