I would love to host a system for my family (including my grandma who is not very technical) and friends that would let us communicate over messages and audio calls (if video calls would be possible then I would be in 7th heaven)
Can you share what you are using (if you have done something like that)?
(that page also includes a demo deployment)
Mentioned here (was you searching for web chats?): https://news.ycombinator.com/item?id=25663233