Yes, but it is a different cron job that needs to run, and you need to monitor it for failures. Caddy does everything out of the box, including retries.

Nginx for my intranet because configuration is fully manual and I have complete control over it.

Caddy for the public services on my vps because it handles cert renewal automatically and most of its configuration is magic which just works.

It is unbelievable how shorter caddy configuration is, but on my intranet:

1. I don’t want my reverse proxy to dial on internet to try to fetch new SSL certs. I know it can be disabled, but this is the default.
2. I like to learn how stuff works, Nginx forces you to know more details but it is full of good documentation so it is not too painful compared to Caddy.

I didn’t find anything for syncing yet. But I settled with plain smb shares which works for 99% of my needs and https://www.filestash.app/ for a simple webUI which is more convenient when browsing files and photos from the phone.

You cannot install addons from the UI, but you can manually install them. Addons are just Docker containers that get configured automatically.