SunOS is a Unix-branded, BSD-based operating system first released in 1983, with the last release in 1994. SunOS ran on Motorola 680x0, Sun386i and SPARC CPU architectures.

SunOS is a Unix-branded, BSD-based operating system first released in 1983, with the last release in 1994. SunOS ran on Motorola 680x0, Sun386i and SPARC CPU architectures.

It was superseded in 1992 by Sun Solaris, which was based on System V Release 4.