Manufacturer	Site
O'Reilly	http://www.ora.com/http://www.gnn.com/
O.R. Technology	http://www.ortechnology.com
Oakley Data Services	http://www.smartcode.com
Oce	No web address
OCLI	No web address
Octocom	No web address
Odixion	http://www.odixion.com/uk/
OEM Products	No web address
Office Data	No web address
Officedata	No web address
OHM	http://www.ohm.co.uk
Oki	http://www.oki.co.uk/cgi-bin/index.cgi
Olicom	http://www.olicom.dk/
Olitec	No web address
Olivetti	http://www.olivetti.com/
Olympia	No web address
Olympus	http://www.olympus.co.uk
Omega	No web address
Omega Electronic Equipment	No web address
On Technology	http://www.on.com/
On Track	http://www.ontrack.com/
On-Stream	http://www.onstream.com
Online	No web address
Ontrack	http://www.ontrack.co.uk
Opal	No web address
Open Communications	No web address
Option International	No web address
Optoma Europe Ltd	http://www.optomaeurope.com/
Oracle	http://www.oracle.com
Orange	No web address
Orchid	No web address
OriginLab Corporation	http://www.microcal.com
Ornetex	No web address
Ortek	No web address
Osicom	No web address
Osprey	No web address
OTC	No web address
Overland Data Inc.	http://www.overlanddata.com