OpenBSD is a security-focused, free and open-source, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD in 1995 by forking NetBSD 1.0.[4] The OpenBSD project emphasizes portability, standardization, correctness, proactive security, and integrated cryptography.[5]
The OpenBSD project maintains portable versions of many subsystems as packages for other operating systems. Because of the project's preferred BSD license, which allows binary redistributions without the source code, many components are reused in proprietary and corporate-sponsored software projects. The firewall code in Apple's macOS is based on OpenBSD's PF firewall code,[6] Android's Bionic C standard library is based on OpenBSD code,[7] LLVM uses OpenBSD's regular expression library,[8] and Windows 10 uses OpenSSH (OpenBSD Secure Shell) with LibreSSL.[9]
The word "open" in the name OpenBSD refers to the availability of the operating system source code on the Internet, although the word "open" in the name OpenSSH means "OpenBSD". It also refers to the wide range of hardware platforms the system supports.[10] OpenBSD supports a variety of system architectures including x86-64, IA-32, ARM, PowerPC, and 64-bit RISC-V.
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^OpenBSD Project (19 May 2020). "OpenBSD". OpenBSD.org. Retrieved 12 October 2020.
^"Murus App, Apple PF for macOS from OpenBSD".
^"Android's C Library Has 173 Files of Unchanged OpenBSD Code". Retrieved 8 October 2018.
^"LLVM Release License". Retrieved 8 October 2018.
^"OpenSSH for Windows". Retrieved 8 October 2018.
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OpenBSD is a security-focused, free and open-source, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created...
Distribution (BSD) series of Unix variant options. The three most notable descendants in current use are FreeBSD, OpenBSD, and NetBSD, which are all...
open-source NAS/SAN operating system), and the system software for the PlayStation 3 and PlayStation 4 game consoles. The other BSD systems (OpenBSD,...
Berkeley. The term "BSD" commonly refers to its open-source descendants, including FreeBSD, OpenBSD, NetBSD, and DragonFly BSD. BSD was initially called...
functionally equivalent, and endorsed by the OpenBSD project as a license template for new contributions. The BSD 0-clause license goes further than the 2-clause...
OpenBSD, from a forked version of NetBSD 1.0 near the end of 1995. In 1998, NetBSD 1.3 introduced the pkgsrc packages collection. Until 2004, NetBSD 1...
computer architectures. OpenBSD is a Unix-like computer operating system descended from Berkeley Software Distribution (BSD), a Unix derivative developed...
features implemented as part of OpenBSD's mmap system call, and to detect use-after-free bugs. Released in 2013, OpenBSD 5.3 was the first mainstream operating...
web sites with a listing of OpenBSD ports and packages: openports.pl OpenPorts.se, originally announced as ports.openbsd.nu in 2006, was a custom-written...
The OpenBSD Journal is an online newspaper dedicated to coverage of OpenBSD software and related events. The OpenBSD Journal is widely recognized as a...
versions of OpenBSD (2.3 and 2.4) used a BSD Daemon with a halo, and briefly used a daemon police officer for version 2.5. Then, however, OpenBSD switched...
for various Unix and Unix-like operating systems, including FreeBSD, OpenBSD, NetBSD, illumos, and Solaris Unix. It is also available for Android and...
DesktopBSD MidnightBSD TrueOS NetBSDOpenBSD "GhostBSD 23.10.1 Now Available". Retrieved 2023-11-03. "GhostBSD is switching its base". GhostBSD is switching...
3.15 DRM/KMS code. OpenBSD has kernel-based mode setting support for Intel and Radeon GPUs. Starting with version 5.4 of OpenBSD, support for Intel GPUs...
designed for scalability, high performance and high availability. OpenBSD, an open source operating system which includes its own implementations of BGP...
/etc/sysctl.d/99-sysctl.conf as of systemd 207). Default setting for FreeBSD, OpenBSD, NetBSD and Mac OS X is to have window scaling (and other features related...
2015. "OpenBSD has started a massive strip-down and cleanup of OpenSSL". OpenBSD journal. April 15, 2014. "OpenBSD forks, prunes, fixes OpenSSL". ZDNet...
doas (“dedicated openbsd application subexecutor”) is a program to execute commands as another user. The system administrator can configure it to give...
systems, including macOS, most distributions of Linux, OpenBSD, FreeBSD, NetBSD, Solaris and OpenVMS. Notably, versions of Windows prior to Windows 10 version...
Docker adoption". 13 June 2018. Retrieved 21 June 2018. "OpenBSD Upgrade Guide: 5.1 to 5.2". openbsd.org. 6 November 2012. "Heads Up: Nginx Removed From Base"...
routed, survives in several of its descendants, including FreeBSD and NetBSD. OpenBSD introduced a new implementation, ripd, in version 4.1 and retired...
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