felt the same way so I've built one for myself that I've been using with friends and family - not (yet) open source but self-hostable https://github.com/bogpad/

felt the same way so I've built one for myself that I've been using with friends and family - not (yet) open source but self-hostable https://github.com/bogpad/meepachat https://github.com/bogpad/meepachat