OPNsense is open source, FreeBSD-based firewall and routing software developed by Deciso. It is a fork of pfSense, which in turn was forked from m0n0wall.
Enpal
Proxmox Virtual Environment is an open-source server virtualization environment. It allows deployment and management of virtual machines and containers
HP Integrated Lights-Out, is an embedded server management technology by Hewlett-Packard
Pi-hole is a Linux network-level advertisement and internet tracker blocking application which acts as a DNS sinkhole, intended for use on a private network.