I host the following off of the top of my head, in no particular order. Some are hosted at home on a combination of a Raspberry Pi 4 and a Synology DS1821+ NAS, some are hosted on a dedicated server:
- Bitwarden
- GitLab
- Pi-hole
- Miniflux
- Previously I used NginxProxyManager, now I just use Caddy
- Samba/FTP server
- Seafile
- URL shortener at cmd.gg
- Syncthing
- ResilioSync
- qBitTorrent
- Glances
- VirtualDSM to isolate a friend's media and hosting from my own on the NAS
- HomeAssistant
- Mastodon
- Kbin
- A couple of MOOs
- Bitlbee
- Wordpress/Classicpress
- Overpass (OpenStreetMap API)
- Icecast - not sure why I host this anymore...
- MinIO as a restic backup target
- UniFi controller
I also run PFSense at home for my router, on a Protectli Vault, if that counts as self-hosting. Seems more like sysadmin, but there you go. I use Uptimerobot to monitor everything and create sleek public status pages.