Our best feature is that the website will detect if you're on the same network as your machine and if so, offer "local" links instead of remotely proxied ones. That way non-technical users dont need anything fancy or to be aware of how NAT traversal works. On top of that, the "local" urls still get valid HTTPS certs for free, so non-technical users dont get any scary browser warnings.
We started out as a way to make self-hosting easier for corporations, and were doing consulting work, but the users who joined our community were mostly home-hosters, so we leaned into that! Jellyfin is now our most popular app.