At present, Smalltalk/X is available for the following systems:
System <CPU>
Windows XP/Vista/2000/2003 <Intel/AMD x86>
Linux 2.6/glibc2.6 <Intel/AMD x86/x86_64>
Sun Solaris <Sparc,x86>
We can, however, upon request provide versions for other systems, for example:
FreeBSD / NetBSD
HP-UX 11.x PARISC
Alpha OSF-1 and VMS
RealIX 88k
SGI-IRIX
Linux/S390
For more information please refer to the chapter "Architecture specific Features, Limitations & Notes" in:
EDIT: cg, 30-nov-09: added x86 to sun solaris