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NetBSD is an open-source, Unix-like operating system that descends from Berkeley Software Distribution , a Research Unix derivative developed at the University of California, Berkeley. It was the second open-source BSD descendant formally released after it forked from the 386BSD branch of the BSD source-code repository. It continues to be actively developed and is available for many platforms, including large-scale server systems, desktop systems, and handheld devices, and is often used in embedded systems.

NetBSD
NetBSD.svg
NetBSD 6.1 Top Command.png
NetBSD 6.1 running Top, a task manager
Developer The NetBSD Foundation
OS family Unix-like (BSD)
Working state Current
Source model Open source
Initial release 1993; 23 years ago (1993)
Latest release 7.0.2 / 21 October 2016; 2 months ago (2016-10-21)
Available in English
Package manager pkgsrc
Platforms Alpha, ARM, PA-RISC, 68k, MIPS, PowerPC, SH3, SPARC, RISC-V, VAX and x86
Kernel type Modular Monolithic Anykernel
Userland BSD
Default user interface Command-line interface
License 2-clause BSD license
Official website netbsd.org

NetBSD is an open-source, Unix-like operating system that descends from Berkeley Software Distribution (BSD), a Research Unix derivative developed at the University of California, Berkeley. It was the second open-source BSD descendant formally released after it forked from the 386BSD branch of the BSD source-code repository. It continues to be actively developed and is available for many platforms, including large-scale server systems, desktop systems, and handheld devices, and is often used in embedded systems.

The NetBSD project focuses on code clarity, careful design, and portability across many computer architectures. NetBSD's source code is openly available and permissively licensed.