One of the first, and now biggest, US computer manufacturers. They also manufacture in Europe. The Sun-2 and 3 series of workstations and servers were based on the Motorola 680x0 family of microprocessors and the Sun-4 series on the SPARC. Sun also produce their own version of Unix, originally called SunOS and now Solaris. Their Network File System has become the de facto standard for sharing files between Unix systems. Sun own MySQL AB. Sun was bought by Oracle Corporation on 2009-04-20.