[[!meta copyright="Copyright © 2007, 2008, 2009, 2011, 2012, 2013 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] * x86. This is the main port. * [[Xen]] * [[open_issues/64-bit_port]]. There is some preliminary work for a x86\_64 port. * [[open_issues/ARM_port]]. Is not in a usable state. * [PowerPC](http://www.pjbruin.dds.nl/hurd/). Is not in a usable state. * Alpha: [project I](http://savannah.nongnu.org/projects/hurd-alpha), and [project II](http://savannah.nongnu.org/projects/gnumach-alpha). Was once started, but isn't in a usable state either. * MIPS. Status completely unknown. * [[open_issues/Mach_on_Top_of_POSIX]]. Status unknown. When starting a port for a new architecture, it might make sense to first target a [[!wikipedia desc=paravirtualized Paravirtualization]] environment, that already abstracts away some of the different hardware implementations' quirks.