BSD operating systems

ClonOS – FreeBSD-based virtual hosting appliance with bhyve hypervisor and web UI

DamnSmallBSD – Extremely lightweight BSD live system (inspired by Damn Small Linux)

DragonFly BSD – Fork of FreeBSD focusing on SMP performance, HAMMER2 filesystem, and scalability

FreeBSD – High-performance, stable, widely used in servers, appliances, and desktops

Fuguita – Portable, bootable OpenBSD-based live system with easy customization

GhostBSD – Modern, user-friendly BSD with MATE desktop environment, pre-configured for desktop use

HardenedBSD – Security-hardened fork of FreeBSD with exploit mitigations and ASLR improvements

MidnightBSD – Desktop-focused FreeBSD derivative with XFCE and package management enhancements

MirBSD – Secure, clean fork of OpenBSD/NetBSD with focus on simplicity and portability

NetBSD – Clean, portable, highly standards-compliant UNIX-like OS with excellent hardware support

NomadBSD – Persistent live USB system based on FreeBSD, great for portable desktop use

OPNsense – Fork of pfSense, FreeBSD-based firewall/router with modern features and security focus

OS108 – Experimental minimal BSD distribution (very niche)

Extremely secure by default, great for firewalls/servers

SmolBSD – Minimal, lightweight FreeBSD-based system for embedded/resource-constrained use

TrueNAS – FreeBSD-based NAS (network-attached storage) system with ZFS support

ULBSD – Lightweight, security-focused BSD variant (limited info, niche project)

XigmaNAS (formerly NAS4Free) – FreeBSD-based NAS solution with ZFS and web interface

helloSystem – macOS-inspired desktop environment on FreeBSD base

pfSense – FreeBSD-based firewall/router with unified threat management and web GUI