Lightweight network IP scanner with web GUI

pfSense is an open source firewall/router computer software distribution based on FreeBSD.

Synology is a popular NAS appliance

Proxmox Virtual Environment is an open-source server virtualization environment. It allows deployment and management of virtual machines and containers

UrBackup is an easy to setup Open Source client/server backup system, that through a combination of image and file backups accomplishes both data safety and a fast restoration time. File and image backups are made while the system is running without interrupting current processes. UrBackup also continuously watches folders you want backed up in order to quickly find differences to previous backups. Because of that, incremental file backups are really fast. Your files can be restored through the web interface, via the client or the Windows Explorer while the backups of drive volumes can be restored with a bootable CD or USB-Stick (bare metal restore).

NPM, but newer? Https/3 whatever that means

PiHole, but with * records, hopefully