I have an off-grid Linux box that hosts a local Wi-Fi network and some communication and entertainment apps. I want to host a chat service for asynchronous off-grid comms. Briar looked like the perfect option if I could just add the mail-box to my Linux box.
Simplex looks like it might do something similar, but it doesn’t look like it does comms over direct Bluetooth.
I’ve been using Caddy instead of nginx for years now. As long as your port forwarding is already setup, it’ll pull TLS certs for every domain in the config automatically and keep it up-to-date forever.
It’s also super easy to use as a reverse proxy, so you can run one caddy server for all your sites on the same machine pretty easily.