http://uhden.i2p/articles/openbsd.html
Since its inception, OpenBSD has stood out as a UNIX-like operating
system based on 4.4BSD, known for its security as well as its
minimalist design. Over the years, it has proven to be an ideal choice
for both professional environments and personal use, offering a
platform where every line of code and configuration is developed with
meticulous attention to detail.