PowerPC, Alpha, SPARC, MIPS, SH3, ARM, amd64, i386, m68k, VAX: Of course it runs NetBSD.

NetBSD, BSD, 4.4BSD, UNIX, acorn26, acorn32, algor, algorithmics, alpha, amiga, amigappc, arc, arm26, arm32, atari, bebox, cats, cesfic, cobalt, emips, epoc32, evbarm, evbmips, evbppc, evbsh3, ews4800, hp300, hppa, hpcarm, hpcmips, hpcsh, hppa, i386, ibmnws, iyonix, luna68k, m68k, mac68k, macppc, mips, mmeye, mvme68k, mvmeppc, netwinder, news68k, newsmips, next68k, mipsco, ofppc, pica, pmax, pmppc, prep, powerpc, sandpoint, sbmips, sgimips, sh3, shark, sparc, sparc64, sun2, sun3, sun3x, ultrasparc, vax, walnut, x68k, x86-64, amd64, xen, linux, freebsd, hp-ux, sunos, osf/1, ultrix, svr4, solaris, sco, iBCS2, IPv6, embedded, real-time, open source, opteron, open source