Origin Systems Incorporated
Revision as of 18:32, 5 August 2008 by Tancred RedStar (Talk | contribs) (OSI moved to Origin Systems Incorporated: OSI was just the abbreviation. Full titles should exist as their own pages and abbreviations exist as redirects to them.)
OSI once upon a time stood for "Origin Systems Incorporated."
This was the name of the company that released the single-player Ultima games upon which UO is based.
They were bought out by EA in September 1992.
For more information, see here:
http://en.wikipedia.org/wiki/Origin_Systems
though of course remember that the Wikipedia, like UO Guide, can be edited by anyone, at any time, for any reason.