- Syncthing node https://syncthing.org ;
- WireGuard server https://wireguard.com ;
- Pi-hole or just lying DNS Server https://pi-hole.net, https://gitlab.com/moviuro/moviuro.bin/blob/master/lie-to-me ;
- Nextcloud https://nextcloud.com/ ;
- Your own little blog/site with https (LetsEncrypt), nginx, etc.
- My calendar, to-do list (via CalDAV, and using GoodTask), and contacts are all hosted on the instance, including shared family calendars
- It's my "personal Dropbox" but with 12 TB of storage, and using OnlyOffice it's also my personal Google Docs with a web editor
- NextCloud's app syncs a complete copy of all my photos from my phone automatically (in addition to using iCloud Photo Library)
- I have a script that auto-imports all footage from my GoPro when I plug it in and makes it accessible via NextCloud, so I can share raw footage with other people. When I edit video, it's all via my iOS devices and LumaFusion connecting to the SMB server (which, granted, isn't NextCloud but I can preview all the files via the NextCloud interface)
- It's all backed up to the cloud as well
- It's accessible externally (I use Traefik for load balancing and LetsEncrypt for SSL)
SSHFS however works wonders, and doesn't require the VPN at all.
> Running any type of server on the system that is not consistent with personal, residential use. This includes but is not limited to FTP, IRC, SMTP, POP, HTTP, SOCS, SQUID, NTP, DNS or any multi-user forums.
That said, I run a small stack of personal stuff, including a public resume-style site, and I've never heard a peep from them. Because there's nothing commercial I feel like I could make an argument my site is "residential".
I did have my server pwned once though (I came home and it was very clear from the fan intensity that it was mining bitcoin) so I'm not sure I'd recommend it to anyone.
Namecheap offers this when you buy a domain through them.