bsd_variant [FreeBSD Wiki @Taiwan]

FreeBSD (based on 4.4BSD-Lite)
- PicoBSD
- TnyBSD
- NanoBSD
- MiniBSD
- DragonFlyBSD (a FreeBSD 4.X variant)
- TrustedBSD
- PCBSD
- Midnight BSD
- DesktopBSD
OpenBSD
- MirOS (an OpenBSD variant)
NetBSD