OpenBSD

OpenBSD
Only two remote holes in the default install, in a heck of a long time!!
Architecture:	multiplatform
This Version:	OpenBSD 4.9 (May 1, 2011)
Date Released:	1996

OpenBSD is a fork of NetBSD that is more focused on security and 'correctness' of code. The OpenBSD project is lead by Theo De Radt.

Homepage

http://www.openbsd.org/ Has all the information for all the relases

Platforms

Port Name	Description
alpha	Digital Alpha-based systems
amd64	AMD64-based systems
armish	ARM-based appliances (by Thecus, IO-DATA, and others)
hp300	Hewlett-Packard HP 9000 series 300 and 400 workstations
hppa	Hewlett-Packard Precision Architecture (PA-RISC) systems
i386	Standard PC and clones based on the Intel i386 architecture and compatible processors
landisk	IO-DATA Landisk systems (such as USL-5P) based on the SH4 cpu
mac68k	Motorola 680x0-based Apple Macintosh with MMU
macppc	Apple New World PowerPC-based machines, from the iMac onwards
mvme68k	Motorola 680x0-based VME systems
mvme88k	Motorola 881x0-based VME systems
sgi	SGI MIPS-based workstations
socppc	Freescale PowerPC SoC-based machines
sparc	Sun sun4, sun4c and sun4m class SPARC systems
sparc64	Sun UltraSPARC systems
vax	Digital VAX-based systems
zaurus	Sharp Zaurus C3x00 PDAs

Support

I'd recommend the site http://www.deadly.org/ for articles relating to OpenBSD

Running under emulation

OpenBSD can run under all kinds of emulation. Here are a few I know off hand.

• i386

VMWare Virtual PC Virtual Server Qemu Bochs.

• Vax

SIMH

• m88k

GXemul