Jdownloader (usefull for 1-click hosters)
Duckdns (DNS)
Filezilla
Adguard / PiHole
HomeAssistant
NGINX Proxy Manager
Mediaelch (Media Organisation Tool)
Rustdesk server (Remote Software like Teamviewer but free)
Vaultwarden (Password Manager)
Linkwarden (Link Manager)
qbittorrent/Deluge or whatever (Torrent)
Nordvpn (VPN support)
everything from the "arr" usiverse