FreeBSD or DragonFLY?
FreeBSD is has jails so you can sandbox your server application, DTrace for diagnosing problems, and ZFS for storing a lot of files reliably. It's like linux but with other goodies.
OpenBSD tends to be used as an appliance like a firewall because it ships with a very minimal base that has been tested extensively for security problems. It doesn't have the fancy features from FreeBSD due to the time needed to maintain and audit all of that code.
If all you wanted to do was run Dtrace on a ZFS system, you would be better off running SmartOS or OpenIndiana. Those were Solaris was the system why were written on and for, not just a port
>"Download the current hipster release of OpenIndiana."
OpenBSD doesn't have the best performance on multicore systems right now. There's work underway to remove the "giant lock" mechanism in the kernel to allow simultaneous access to the kernel between cores but it's still a ways off.
I don't know much about NetBSD as far as performance so I can't say for sure.
Once that's done, you can patch the ticking rate in kern.hz by changing it from 100 to 1000 and voilà, the most secure operating system.
Solaris derivative, like an Illumos distro. You could run OpenIndiana or plain ol smartOS for example and put Windows or Linux in a zone or KVM It's a little confusing after that, but I'm pretty sure you can run individual applications in a container like docker
Pfsense is literally FreeBSD. Reason for this over openBSD is that FreeBSD has always been ahead of openBSD in wireless support and driver support. OpenBSD has closed the gap recently, but still lags behind in wireless. I remember reading that Open didn't even support wpa when pfSense started.
They use FreeBSD specifically. Sony actually uses a derivative of FreeBSD called "Orbis OS" in the PS4.
There's actually a pretty significant amount of BSDs out there but they're usually hiding in appliances and backend hardware. BSDs have pretty much always ran parts of the internet though.
It does if you're trying to do something useful, like combine nginx, mariadb and php-fm to run owncloud and have it all neatly contained with no point of access to the host system, since it's even got it's own loopback interface and you can firewall it however you like.
>FreeBSD has always been ahead of openBSD in wireless support
This is BS, there was a time when OpenBSD was even ahead of Linux on wireless support. You're probably one of those guy that thinks OS X is FreeBSD. You make me sick!