XOS is a multi-tasking operating system for PCs which
implements the x86 32-bit architecture. It provides many features
found in Unix and VMS. It has a relatively small footprint but
still provides a fully protected multi-tasking environment. The
basic system is command line oriented and the tools needed to
implement a graphical user interface are provided.
It has been used in a number of embedded/dedicated
applications and can also be used as a desk-top system.
XOS itself is in the public domain. There are no
restrictions on use, including commercial use. The XOS distribution
includes several freeware packages that have some restrictions on
redistribution, mainly requiring including copyright notices and
crediting the original authors. To the best of our knowledge, all
of these allow use for private or commercial purposes and free
redistribution with minimal conditions. None of the software
provided here is licensed under the GPL or LGPL. Please see the
Legal page for a list of the external
packages included and the terms and conditions under which they can
be used and redistributed.
The goal for XOS has been to provide maximum practical
functionality while remaining understandable, simple, secure, and
efficient. (Probably "secure" should be listed first, but we believe
that a system cannot be secure if it is not understandable. To be
understandable it must be reasonably simple.)
Please read the Legal page
before downloading anything from this site. Downloading and using
any information from this site constitutes acceptance of the terms
and conditions stated there.
This site was last updated on 5-Jan-2011. This update
includes a major new version of XOS (4.5.0).