Skip to main content
OpenBSD is a security focused BSD, a Unix-like operating system derived from the BSD 4.4Lite release.

One of the only BSDs actively removing non-BSD compatible code (including anything lisenced as GPL or LGPL code).

It is freely downloadable at anytime by anyone in any country for any use from multiple locations around the world.

The project maintains a small income by selling release CDs, shirts and posters. The money is used to buy hardware and help secure programmers for specific tasks that would take longer then free time might allow.

OpenBSD was forked from NetBSD eight years ago by Theo de Raadt, who was one of the founders of the project, after being forced out of it because of his outspoken attitude.

OpenBSD developers and users tend to be very direct and react poorly to people new to mailing lists not greping through previous messages for answers to their questions before asking. Because of this, they have an image for being very antinewbie.

OpenBSD has one of the most thorough documentations of any of the Unix-like and Unix derivative operating systems.

The project's mascot Puff has most recently been given the theme of Puffy Hood.
OpenBSD is used in may firewalls around the world and has the best security record of any of the BSDs.
OpenBSD by Nate December 23, 2003
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
A BSD variant, used by either people who want their "file" server to be Fort Knox, or people who are too much of a hipster to use Slackware.

This OS isn't the last level of OS hipsterism, though. That would probably be NetBSD or Funtoo.
OpenBSD user in his natural habitat:

KingOfFuckingHipsters: I use OpenBSD, bow down Arch user!

(QueenOfFuckingHipsters has entered the chat)

QueenOfFuckingHipsters: Funtoo represent

(KingOfFuckingHipsters has left the chat)
OpenBSD by E hates Q June 29, 2021
Related Words
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
Load more