I had both the 32bit sparc and UltraSparc machines running Solaris, 21064 Alpha running Linux, 21264 Alpha running Tru64, and also use of pa-risc boxes with HPU

I had both the 32bit sparc and UltraSparc machines running Solaris, 21064 Alpha running Linux, 21264 Alpha running Tru64, and also use of pa-risc boxes with HPUX, MIPS running IRIX, and Power running AIX. All of it was second hand old stuff by the time I got it, of course. Fun times.