BSD/OS

BSD/OS
Developer	Berkeley Software Design, Inc. (1991–2001) Wind River Systems (2001–2003)
Written in	C
OS family	Unix-like (Net/2)
Working state	Discontinued
Source model	Source-available
Initial release	BSD/386 1.0, March 1993; 32 years ago (1993-03)
Latest release	BSD/OS 5.1 / 2003; 22 years ago (2003)
Marketing target	Internet server applications
Available in	English
Platforms	x86, SPARC, PowerPC
Kernel type	Monolithic
Default user interface	Command-line interface
License	Proprietary

BSD/OS is a proprietary Unix operating system first released in 1993 as BSD/386. It was originally developed and sold by Berkeley Software Design, Inc. (BSDi) and designed to be a Unix for 386-based PCs. It was built off the Net/2 distribution of BSD, on which the developers had previously contributed to.^[1]

Eventually the operating system was also ported to support PowerPC and SPARC architectures, and consequently was retitled to BSD/OS as of version 2.0 (1995). In 2001, BSDi sold the rights of the OS to Wind River Systems who developed and released version 5.0 in 2003 before discontinuing the product.