AIX 4.x on PowerPC and AIX 5.1

FreeBSD on Intel Pentium

Solaris 2.8/SunOS 5.1 on UltraSparc

TRU64 (Digital UNIX) on DEC Alpha AXP

UNIX (SVR4.3) on AT&T 3600 and Hewlett-Packard 9000

Windows platforms (Windows 3.1/95/98/NT/2000/XP/Server 2003) on Intel Pentium

QNX (real-time SVR4.3 UNIX) on Intel 486/Pentium

SCO-UNIX (SVR4.2 & BSD4.3 hybrid) on Intel 486

VENIX (real-time SVR4.3 UNIX) on Intel 486

MS-DOS and MS-Windows (3.1 & Windows 95) on Intel 386/486/Pentium

OpenVMS (VMS) on DEC VAX (VAXcluster) & DEC Alpha AXP