OpenBSD is a free and open source Unix-like operating system that is generally focused on security. OpenBSD was originally a fork of NetBSD , but has since become it's own project. OpenBSD is responsible for many open source projects that are widely used today, including OpenSSH, LibreSSL, OpenSMTPD, spamd and PF. The macOS kernel, Darwin, borrows many utilities and libraries from OpenBSD.

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Openbsd61 desktop
DeveloperOpenBSD Contributors
OS familyBSD / UNIX-like
Working stateCurrent
Source modelOpen Source
Initial release1 July 1996; 26 years ago (1996-07-01)
Latest release6.9 / 1 May 2021; 17 months ago (2021-05-01)
Package managerpkg
PlatformsAlpha, amd64, arm64, armv7, hppa, i386, landisk, loongson, luna88k, oceton, powerpc, powerpc64, sparc64
Kernel typeMonolithic
user interface
FVWM on X11

Version History

Version Release Date New Features
6.9 May 2021 Security updates
6.8 October 2020 Support added for the 64 bit PowerPC platform
6.7 May 2020 Ffs2 file system is now default
6.6 October 2019 More system utilities added
6.5 April 2019 Security updates and more hardware support