- Solaris features without being beholden to Oracle.
- The FreeBSD community focuses more on tech than on licensing and political activism like a certain freeware Unix "alike"
- The ports system does a far better job of balancing tracking recent software releases and stability than other systems of the same sort (most typically exemplified by certain popular Unix "alikes")
- Stability
- Well-structured OS (i.e. filesystem, kernel and its config, etc)
- The ports system
- FreeBSD known for its ability to handle heavy network traffic with high performance and rock solid reliability
- FreeBSD is the system of choice for high performance network