RISC processors/workstations and Unix operating systems

DECstation MIPS RISC/ULTRIX
Sun Sparc SunOS, Solaris
HP PA-RISC HP/PA, HPPA, HP-UX, HPUX
SGI MIPS IRIX
IBM RS/6000, RS6000 Power, PowerPC AIX
DEC Alpha OSF/1, Digital UNIX, Tru64 UNIX