AIX
BeOS
BSD/OS (x86, Sparc)
Compaq Tru64 UNIX
Digital UNIX
FreeBSD (x86, Alpha)
HP-UX
Linux (x86, Alpha, ARM, MIPS, PowerPC, Sparc, S/390)
Mac OS X
NetBSD (x86, Alpha, ARM, m68k, PowerPC, Sparc, VAX)
OpenBSD (x86, Sparc)
SCO OpenServer
SCO UnixWare
SGI IRIX
SunOS 4
Sun Solaris (x86, Sparc)
Windows 2000/NT

Client applications are also supported on Windows 95/98/ME.