Linux is not an OS, it is a gold rush, while OpenBSD is just an OS. btw, there are very important contributions from OpenBSD's team - openssh and pf (primary I

Linux is not an OS, it is a gold rush, while OpenBSD is just an OS. btw, there are very important contributions from OpenBSD's team - openssh and pf (primary IP packet filter imported into FreeBSD). FreeBSD itself is an example of very successful "niched" UNIX-like system - think about network interface's performance, removal of GKL from most used device drivers, SMP-aware scheduler and memory manager, kqueue, netgraph subsystems and so on. OpenBSD is a great toy for hobbyist to resurrect some ancient SUN's 1U Netra server as firewall and proxy for home or very small business. I have several of them for pleasure and enjoyment. And of course it is a very good choice for some low-power single-core single-CPU system without heavy pthreads. My opinion it cannot be compared to the "open source business ecosystem" that Linux[based systems] became.