- O&K Software Ltd (Moscow, RUS)
- O&O Software GmbH (Berlin, DEU)
- O&S Associates, Inc. (Blue Bell, PA)
- O'Gara Armoring (Fairfield, OH)
- O'Keefe Controls Co. (Monroe, CT)
- O'Neal Manufacturing Services (Birmingham, AL)
- O'Neill LLC (Rome, GA)
- O'sullivan (Lamar, MO)
- O-yA! (Mesa, AR)
- O-Z/Gedney (Rosemont, IL)
- O-Z/Gedney A Business Of The EGS Electrical Group (Tulsa, OK)
- O. F. Zurn Co. (Philadelphia, PA)
- O.C. White Co. (Thorndike, MA)
- O2 Secure Wireless, Inc (St Augustine, FL)
- O3SIS Information Technology AG (San Francisco, CA)
- OAG (Bedfordshire, GBR)
- OAG Analytics (Houston, TX)
- Oai (Cleveland, OH)
- OAISYS (Tempe, AZ)
- Oak International, Inc (Sturgis, MI)
- OakGate Technology, Inc. (Loomis, CA)
- Oakland Instrument Corp. (Minneapolis, MN)
- Oakley Industries, Inc. (Clinton Township, MI)
- Oaktree Systems, Inc. (Calverton, NY)
- Oakworks, Inc (New Freedom, PA)
- Oasis Manufacturing (Laguna Hills, CA)
- Oatey Supply Chain Services (Cleveland, OH)
- Oberdorfer Pumps, Inc. (Syracuse, NY)
- Oberon, Inc. (State College, PA)
- Oberthur Card Systems Ltd (Chantilly, VA)
- Oberthur Technologies (Paris, FRA)
- Objacct, Inc. (Bowling Green, OH)
- Object Connections (Belrose, AUS)
- Objectif Lune (Bloomfield, NJ)
- Objective Interface Systems, Inc. (Herndon, VA)
- Objective Systems (Exton, PA)
- Objectivity, Inc (Sunnyvale, CA)
- Objectvideo (Reston, VA)
- Objectworld Communications Corp. (Ottawa, CAN)
- Objet Geometries, Inc. (Billerica, MA)
- Oblicore, Inc. (Waltham, MD)
- Obopay, Inc. (Redwood City, CA)
- OBP Medical (Lawrence, MA)
- Obsidian Strategics (Scottsdale, AZ)
- Obvius (Hillsboro, OR)
- Obzerv Technologies Inc (QUÉBEC,, CAN)
- OC Systems Inc. (Fairfax, VA)
- Ocarina Networks (San Jose, CA)
- OCAS, Inc. (Vienna, VA)
- Océ-USA Holding Inc. (Trumbull, CT)
- Occam Networks (Santa Barbara, CA)
- Occupational Safety & Health Administration (Washington, DC)
- OCD Moving Services (El Sobrante, CA)
- Oce Business Services, Inc. (New York, NY)
- Oce Display Graphics Systems (Richmond, CAN)
- Oce-USA, Inc. (Indianapolis, IN)
- Ocean Air Transportation, Inc. (Windsor Locks, CT)
- Ocean Bio-Chem, Inc (Fort Lauderdale, FL)
- Ocean Machinery, Inc. (Fort Lauderdale, FL)
- Ocean Optics, Inc. (Largo, FL)
- Ocean Power Technologies, Inc (Pennington, NJ)
- Oceaneering International, Inc. (Houston, TX)
- Oceaneering International, Inc. (Houston, TX)
- OceanGrip (Sarasota, FL)
- OceanLake Commerce Inc. (Ontario, CAN)
- Oceanmax USA (Fort Lauderdale, FL)
- OceanServer Technology, Inc. (Fall River, MA)
- OCI Solar Power (San Antonio, TX)
- Ocimum Biosolutions Ltd. (Hyderabad, IND)
- Oclaro Inc. (San Jose, CA)
- Oclaro, Inc. (Fremont, CA)
- Oclaro, Inc. (San Jose, CA)
- Oco, Inc (Waltham, MA)
- OCP Group (San Diego, CA)
- Ocs Checkweighers (Lawrenceville, GA)
- OCSiAl (Columbus, OH)
- Octagon Systems Corp. (Westminster, CO)
- Octasic Inc. (Quebec, CAN)
- Octava, Inc. (Toronto, ON, CAN)
- Octave Systems, Inc. (Campbell, CA)
- Octavian Ltd (Boston, MA)
- Octillion Corp. (Auburn Hills, MI)
- Octiv (Berkeley, CA)
- octoScope (Marlboro, MA)
- OctWare Inc. (Quebec, CAN)
- Ocular, Inc. (Dallas, TX)
- Oculis Labs Inc (Hunt Valley, MD)
- OCZ Storage Solutions (San Jose, CA)
- OCZ Technology Inc. (San Jose, CA)
- Oden Corp. (Tonawanda, NY)
- ODG Gear (Plymouth, MI)
- ODI Security, LLC (Mountain View, CA)
- ODIN technologies (Ashburn, VA)
- Odor Management, Inc. (Long Grove, IL)
- Odotech, Inc. (Montreal, QC, CAN)
- ODU-USA Inc. (Camarillo, CA)
- ODVA (Ann Arbor, MI)
- ODVA, Inc. (Ann Arbor, MI)
- ODW Logistics (Columbus, OH)
- Odyssey Logistics (Danbury, CT)
- Odyssey Logistics & Technology Corporation (Danbury, CT)
- Odyssey Software, Inc. (W. Henrietta, NY)
- Odyssey Software, Inc. (W. Henrietta, NY)
- Odyssey Technical Solutions (Round Rock, TX)
- OEConnection LLC (Richfield, OH)
- OEL Worldwide Industries (Palmer Lake, CO)
- OEM Controls, Inc. (Shelton, CT)
- OEM Dynamics, A Div. of Animatics Corp. (Santa Clara, CA)
- OEM Group (Gilbert, AZ)
- OEMCameras (Middletown, NY)
- Oerlikon Balzers (Export, PA)
- Oerlikon Fairfield (Lafayette, IN)
- Oerlikon Leybold Vacuum (Export, PA)
- Oerlikon Metco (Westbury, NY)
- Oerlikon Optics (Balzers, LIE)
- OES Global, Inc. (Pompano Beach, FL)
- Offen Petroleum (Commerce City, CO)
- Offermatica (San Francisco, CA)
- Office Efficiencies (India) Private Limited (Mumbai, IND)
- Office Efficiencies (India) Private, Ltd. (Mumbai, IND)
- Office Pro (Lake Geneva, WI)
- Office Work Software, LLC (Novato, CA)
- Office-Kit.com (New York, NY)
- Officemax (Itasca, IL)
- Offshore Solutions (Beaverton, OR)
- Ofil Systems Ltd. (Lawrenceville, GA)
- OFS (Headquarters) (Norcross, GA)
- Ogden Mfg. Co. (Arlington Heights, IL)
- Ogena Solutions (Stoney Creek, ON, CAN)
- Ogihara America Corp. (Howell, MI)
- Ogilvy & Mather, Inc. (Playa Vista, CA)
- Oglebay Norton (Cleveland, OH)
- Ogontz Corp. (Willow Grove, PA)
- OGP - Optical Gaging Products, Inc. (Rochester, NY)
- OGP UK Limited (Derbyshire, GBR)
- OGSystems (Chantilly, VA)
- Ogura Industrial Corp. (Somerset, NJ)
- Ohaus Corporation (Parsippany, NJ)
- Ohio Carbon Blank Inc. (Willoughby, OH)
- Ohio Fabricators Company (Coshocton, OH)
- Ohio Gratings, Inc. (Canton, OH)
- Ohio Laser (Plain City, OH)
- Ohio Pipe, Valve & Fittings, Inc. (Cleveland, OH)
- Ohio Rod Products (Versailles, IN)
- Ohio Semitronics, Inc. (Hilliard, OH)
- Ohio Tool Works LLC (Ashland, OH)
- Ohlheiser Corp. (Newington, CT)
- Ohmic Instruments, Inc (Saint Charles, MO)
- Ohmite Manufacturing Co. (Warrenville, IL)
- OHVA, Incorporated (Milpitas, CA)
- OI Analytical (College Station, TX)
- OI Partners, Inc./ The Wedge Group, Inc. (Nashville, TN)
- oicent Communications, Inc (Cupertino, CA)
- Oil Eater (Skokie, IL)
- Oil Eater (Skokie, IL)
- Oil Filtration Systems Inc. (Boerne, TX)
- Oil Refineries Ltd (Haifa, ISR)
- Oil Skimmers, Inc. (Cleveland, OH)
- Oil Trades Supply (Bellerose, NY)
- Oil-Dri Corp. of America (Chicago, IL)
- Oil-Rite Corporation (Manitowoc, WI)
- Oildex (Denver, CO)
- Oilfield Improvements, Inc. (Broken Arrow, OK)
- Oilfield Instrumentation (Lafayette, LA)
- OilTrap Environmental (Portland, OR)
- OilTrap Environmental Products Inc. (Tumwater, WA)
- OITUK Ltd. (Milton Keynes, GBR)
- OK Enterprises, Inc. (Carthage, MS)
- OK International Group, Inc. (Marlborough, MA)
- OK Rental, Inc. (Darby, PA)
- Okamoto Corp. (Vernon Hills, IL)
- Okay Industries, Inc. (New Britain, CT)
- Okazaki Manufacturing Company (Rhondda Cynon Taff, GBR)
- Oki Data Americas, Inc. (Mount Laurel, NJ)
- OKI Data Corporation (Tokyo, JPN)
- Oki Electric Industry Co., Ltd. (Tokyo, JPN)
- Oki Semiconductor (Sunnyvale, CA)
- Oksolar.com (Miramar, FL)
- Okuma America Corp. (Charlotte, NC)
- OKW Electronics, Inc. (Bridgeville, PA)
- OKW Enclosures, Inc. (Bridgeville, PA)
- OKYZ Inc. (Bethesda, MD)
- Olc Inc. (Cupertino, CA)
- Olcott Plastics (St Charles, IL)
- Old World Industries (Northbrook, IL)
- Old World Laboratories (Virginia Beach, VA)
- Oldcastle BuildingEnvelope (Calgary, AB, CAN)
- Oldcastle Glass (Telford, PA)
- Oldcastle Infrastructure, Inc (Atlanta, GA)
- Oldcastle Infrastructure, Inc. (Auburn, WA)
- Olde Wood, Ltd. (Magnolia, OH)
- Oldham Gas (Oakdale, PA)
- Olea Sensor Networks (Reno, NV)
- OLED Works, LLC (Rochester, NY)
- OleumTech Corp. (Foothill Ranch, CA)
- OLI Systems, Inc. (Cedar Knolls, NJ)
- Olin Corp. (Niagara Falls, NY)
- Oliver Corporation (Cottrellville, MI)
- Oliver Healthcare Packaging (Grand Rapids, MI)
- Oliver IGD Ltd (Cheshire, GBR)
- Oliver Solutions (Herzliya, ISR)
- Olixir Technologies (Milpitas, CA)
- Olocity Corp. (Golden, CO)
- Ology Bioservices, Inc. (Alachua, FL)
- OLSOFT (Moscow, RUS)
- Olvio It Inc (Ridgewood, NY)
- OlyKit, Inc. (New York, AL)
- Olympia (Norcross, GA)
- Olympia Lighting Products, Inc (Pompano Beach, FL)
- Olympic Steel (Bedford Heights, OH)
- Olympus America Inc. / Industrial Products Group Division (Melville, NY)
- Olympus Corp. (Bridgeport, CT)
- Olympus Corporation (Center Valley, PA)
- Olympus Corporation (Orangeburg, NY)
- Olympus Corporation of the Americas (Center Valley, PA)
- Olympus Europa Holding GmbH (Hamburg, DEU)
- Olympus Imaging America Inc. (Center Valley, PA)
- Olympus Industrial America - Micro Imaging Division (Orangeburg, NY)
- Olympus Medical Systems (Center Valley, PA)
- Olympus Medical Systems (Center Valley, PA)
- Olympus Scientific (Center Valley, PA)
- Olympus Scientific (Center Valley, PA)
- Olympus Scientific Solutions America (Waltham, MA)
- OM Group, Inc. (Cleveland, OH)
- Omada A/S (Copenhagen, DNK)
- Omadi, Inc (utah city, UT)
- Omative North America (Cincinnati, OH)
- OMAX Corporation (Kent, WA)
- OmBelt Solutions (Moscow, RUS)
- OMDIA (Austin, TX)
- OMEC Technology Co., Ltd. (Guandong, CHN)
- Omega Bio-Tek Inc. (Norcross, GA)
- OMEGA ENGINEERING LIMITED (MANCHESTER M44 5BD, GBR)
- Omega Engineering, Inc. (Norwalk, CT)
- Omega Expert (Quebec, CAN)
- Omega Industrial Safety (Saukville, WI)
- Omega Lighting (Tupelo, MS)
- Omega Optical Inc. (Brattleboro, VT)
- Omega Shielding Products, Inc. (Randolph, NJ)
- Omega Steel Company (Bridgeton, MO)
- Omega TMM (Fairport, NY)
- Omega Wireless, LLC (Irvine, CA)
- OmegaBrandess (Hampstead, MD)
- Omegadyne, Inc. (Stamford, CT)
- Omegasonics, Inc. (Simi Valley, CA)
- Ometric Corporation (Columbia, SC)
- OMEX Technologies (Wheeling, IL)
- OMG Roofing Products (Agawam, MA)
- OMG Roofing Products (Agawam, MA)
- OMI Contract Assembly Services (Houston, TX)
- OMICS International (Henderson, NV)
- Omikron GmbH (Pforzheim, DEU)
- Omnetics Connector Corporation (Minneapolis, MN)
- Omnex (Ann Arbor, MI)
- Omni Components Corp. (Hudson, NH)
- Omni Displays (Brooksville, NY)
- Omni ID (Burnsville, MN)
- Omni Technical Services, Inc. (Saint Johns, MI)
- Omni Vision, Inc. (Roselle, IL)
- Omni-ID (Rochester, NY)
- Omni-Threat Structures (Miami, FL)
- Omni-Tract® Surgical (St. Paul, MN)
- OMNIA Partners (Franklin, TN)
- Omnia, Inc (Lakeland, FL)
- Omnica Corporation - Product Development (Irvine, CA)
- Omnicell Co. (Mountain View, CA)
- Omnicom Group Incorporated (New York, NY)
- OmniComm Systems, Inc. (Fort Lauderdale, FL)
- Omnicomm, LLC (Moscow, RUS)
- Omnicomp Systems, Inc. (Houston, TX)
- Omnifit (Rockville Center, NY)
- Omnify Software (Andover, MA)
- OmniGuide, Inc. (Cambridge, MA)
- OMNIKEY (Walluf, DEU)
- Omnilert, LLC (Leesburg, VA)
- Omnilink Systems (Alpharetta, GEO)
- OmniMD (Hawthorne, NY)
- Omnimetrix (Buford, GA)
- Omnimount (Phoenix, AZ)
- Omniprint Inc. (Santa Ana, CA)
- OmniPulse Technology (Longwood, CA)
- Omniscout (Richmond Hill, CAN)
- Omniseal Solutions (Garden Grove, CA)
- Omnitek (Basingstoke, GBR)
- Omnitracs, LLC (Dallas, TX)
- Omnitracs, LLC (Dallas, TX)
- Omnitronix Corp. (Streamwood, IL)
- Omnitronix, Inc. (Seattle, WA)
- Omniture Inc. (San Francisco, CA)
- Omnivision (Highland, CA)
- OmniVision Technologies, Inc. (Santa Clara, CA)
- Omnix International L.L.C. (Dubai, ARE)
- OMNOVA Solutions Inc. (Beachwood, OH)
- OmPrompt (Oxfordshire, GBR)
- Omron Automation & Safety (Hoffman Estates, IL)
- Omron Automation Americas (Hoffman Estates, IL)
- Omron Corp. (Kyoto, JPN)
- OMRON Corporation (Schaumburg, IL)
- Omron Electronics Europe JCD (NLD)
- Omron Healthcare Co. Ltd (Bannockburn, IL)
- Omron Industrial Automation (Schaumburg, IL)
- Omron Management Center of America, INC. (Hoffman Estates, IL)
- OMS SafeHarbor, Inc. (Lowell, MA)
- OMT.INTEREGON Corp. (Ingleside, ON, CAN)
- On Center Software, Inc. (The Woodlands, TX)
- On Demand Machinery (Elizabeth, NJ)
- ON DEMAND Microelectronics GmbH (Vienna, AUT)
- ON Semiconductor (Phoenix, AZ)
- ON Semiconductor Canada (Waterloo, ON, CAN)
- On Site Energy (Hicksville, NY)
- On Site Gas Systems Inc. (Newington, CT)
- On The Go Technologies Group (Concord, CAN)
- On Track Innovations, Ltd. (Fort Lee, NJ)
- On-Line Monitoring Inc (Exton, PA)
- On-Net Surveillance Systems, Inc. (Suffern, NY)
- On-Net Surveillance Systems, Inc. (Pearl River, NY)
- On-Net Surveillance Systems, Inc. (Pearl River, NY)
- On-Q Software Inc (Miami, FL)
- On-Site Analysis Inc. (Palm Beach Gardens, FL)
- On.Q Legrand (Middletown, PA)
- On2 Technologies Inc (Clifton Park, NY)
- Ona EDM USA Corp. (Addison, IL)
- Onanon, Inc. (Milpitas, CA)
- Onboard Systems International (Vancouver, WA)
- Oncam Grandeye (Lowell, MA)
- Once Innovations, Inc. (Plymouth, MN)
- Onchip, Inc. (Santa Clara, CA)
- Oncolix, Inc. (Houston, TX)
- Ondax, Inc. (Monrovia, CA)
- Ondiflo (Houston, TX)
- Ondrives Ltd. (Chesterfield, Derbyshire, GBR)
- Ondrives.US Corporation (Freeport, NY)
- One Hour Air Conditioning & Heating (Greenville, SC)
- One Network Enterprises Inc (Dallas, TX)
- One Plus Corp. (Northbrook, IL)
- One Resonance Sensors, LLC (San Diego, CA)
- One RF Technology (Sophia Antipolis, FRA)
- One Shield (Westborough, MA)
- One Stop Displays (OSD) (Orlando, FL)
- One Stop Systems, Inc. (Escondido, CA)
- One to One Interactive (Charlestown, MA)
- One Voice Technologies, Inc. (La Jolla, CA)
- One-Cycle Control, Inc. (Irvine, CA)
- One-Pull Wire and Cable Solutions (Windsor, VT)
- OneAccess Networks (Staines Middlesex, GBR)
- OnEarth Solutions Corp. (Rockville, MD)
- OneBeacon Insurance Group (New York, NY)
- OneBill, Inc. (Santa Clara, CA)
- OneCall Manage, Inc (Red Bank, NJ)
- OneD Material, LLC (Palo Alto, CA)
- Oneda Corporation (Columbus, GA)
- OneDomain, Inc. (Birmingham, AL)
- oneDrum (London, GBR)
- Oneida Air Systems, Inc. (Syracuse, NY)
- OneMonroe (Monroe Engineering Products) (Rochester Hills, MI)
- Oneok Exploration (Woodward, OK)
- ONEOK, Inc (Tulsa, OK)
- OneScreen (San Diego, CA)
- OneSpan (Chicag, IL)
- OneSpan (Chicago, IL)
- OneSubsea (Houston, TX)
- onesuite (Los Angeles, CA)
- OneWeb (McLean, VA)
- Onexia, Inc. (Exton, PA)
- Onfolio, Inc. (Cambridge, MA)
- Ong Corporation (Hackensack, NJ)
- ONICON Incorporated (Largo, FL)
- Oniqua MRO Analytics (Denver,, CO)
- Oniqua MRO Analytics (Denver, CO)
- Online Backup Inc. (Collierville, AL)
- Online Banking Solutions (Atlanta, GA)
- Online Development, Inc. (Knoxville, TN)
- Online Devices (Houston, TX)
- Online Inc. (McHenry, IL)
- Online Labels.com (Longwood, FL)
- Online Media Technologies Ltd., UK (London, GBR)
- Online menu (Frisco, TX)
- Online One Pty Ltd (Mascot, AUS)
- OnLine Power Supply (Centennial, CO)
- Online Toolworks Corporation (Beaverton, OR)
- Online-Devices (Huston, TX)
- Onlinecomponents.com (Phoenix, AZ)
- Onlline-Devices (Natanya, ISR)
- OnLogic, Inc. (South Burlington, VT)
- Onmark, Inc. (South San Francisco, CA)
- Ono Sokki Technology Inc. (Addison, IL)
- onOne Software, Inc. (Portland, OR)
- ONPATH Technologies (Marlton, NJ)
- OnPoint Medical Diagnostics, Inc. (Minneapolis, MN)
- OnRelay (London, GBR)
- OnRobot (Los Angeles, CA)
- OnScreen Technologies, Inc. (Safety Harbor, FL)
- onsemi (Phoenix, AZ)
- Onset Computer Corporation (Bourne, MA)
- Onshape, a PTC SaaS Business (Cambridge, MA)
- OnSite Energy LLC (Flint, MI)
- OnSite Legionella Testing (Antioch, CA)
- OnSite Waste Technologies, Inc. (Newport Beach, CA)
- OnStat Power (Stamford, CT)
- OnStation Corp. (Redwood City, CA)
- ONStor, Inc. (Campbell, CA)
- Onstream Media Corporation (Pompano Beach, FL)
- Ontario Parking Systems Ltd (London, ON, CAN)
- Ontario Plastics, Inc. (Rochester, NY)
- Ontario Systems, LLC (Muncie, IN)
- Onteco Corp. (Aventura, FL)
- OnTime Networks LLC (Dallas, TX)
- OnTime Networks, LLC (Dallas, TX)
- Onto Innovation Inc. (Wilmington, MA)
- Onto Innovation Inc. (Wilmington, MA)
- Onto Innovation Inc. (Wilmington, MA)
- Ontonix LLC (Novi, MI)
- ontoprise GmbH (Karlsruhe, DEU)
- Ontotext USA, Inc. (New York, NY)
- Ontra Presentations, LLC (New York, NY)
- OnTrack Rogue Valley (Medford, OR)
- Onvia (Seattle, WA)
- ONVIF (San Ramon, CA)
- OnviSource, Inc. (Plano, TX)
- Onward Robotics (Pittsburgh, PA)
- ONYX Engineering Ltd. (Windsor, ON, CAN)
- Onyx Government Services, LLC., (Fairfax, VA)
- Onyx Graphics (Midvale, UT)
- Onyx Industries (Hastings, MN)
- Onyx Scientific Ltd (Sunderland, GBR)
- Onyx Valve Co. (Cinnaminson, NJ)
- Oorja Protonics (Fremont, CA)
- OP104 Inc. (Clearwater, FL)
- Opal Kelly Incorporated (Portland, OR)
- Opal-RT Technologies (Montreal, QC, CAN)
- Opalis (Mississauga, ON, CAN)
- OPC Foundation (Scottsdale, AZ)
- Opc Marketing, Inc. (Addison, TX)
- OPC Training Institute (Edmonton, AB, CAN)
- OPCO Laboratory, Inc. (Fitchburg, MA)
- Opelin, Inc. (San Jose, CA)
- Open Access Technology International (Minneapolis, MN)
- Open Access Technology International, Inc. (Minneapolis, MN)
- Open Access Technology International, Inc. (Minneapolis, MN)
- Open Access Technology International, Inc. (Minneapolis, MN)
- Open Access Technology International, Inc. (Minneapolis, MN)
- Open Access Technology International, Inc. (Minneapolis, MN)
- Open Design Alliance (Phoenix, AZ)
- OPEN Engineering s.a. (Angleur (Liège), BEL)
- Open Kernel Labs (Chicago, IL)
- Open Make Software (Chicago, IL)
- OPEN MIND Technologies USA Inc. (Needham, MA)
- Open Solutions, Inc. (Glastonbury, CT)
- Open Source Storage, Inc. (Santa Clara, CA)
- Open Text Corp. (Bannockburn, IL)
- Open-E (Munich, DEU)
- Open-E, Inc (Marietta, GA)
- Open-Silicon, Inc. (Milpitas, CA)
- Open-Xchange, Inc. (Palo Alto, CA)
- Openbox Technologies (Providence, RI)
- Openbravo, S.L. (San Francisco, CA)
- OpenCloud Ltd (Cambridge, GBR)
- OpenClovis, Inc. (Petaluma, CA)
- Openconnect Systems Incorporated (Dallas, TX)
- Openet (Dublin 12, IRL)
- openGear (Ottawa, ON, CAN)
- Opengear Inc (Sandy, UT)
- OpenKey (Plano, TX)
- OpenLink Software, Inc. (Burlington, MA)
- OpenLogic, Inc. (Broomfield, CO)
- OpenMake Software (Chicago, IL)
- OpenMarket, Inc. (Seattle, WA)
- OpenMetrik, Inc. (Piscataway, NJ)
- OpenMFG, LLC (Norfolk, VA)
- OpenNETCF Consulting (Dyer, IN)
- Opennetwork (Clearwater, FL)
- OpenPeak Inc. (Boca Raton, FL)
- OpenQ, Inc. (Charlottesville, VA)
- OpenSpace (San Francisco, CA)
- OpenSpace (San Francisco, CA)
- OpenSpan (Alpharetta, GA)
- OpenSynergy, Inc. (USA) (San Diego, CA)
- OpenSystems Pubishing (St. Clair Shores, MI)
- OpenTech Systems, Inc. (Lewisville, TX)
- OpenText Corp. (Waterloo, ON, CAN)
- OpenText Corporation (Ontario, CAN)
- Opentv, Inc. (San Francisco, CA)
- OpenVox Communication Co Ltd (Shenzhen, CHN)
- Openwave Systems, Inc (Redwood City, CA)
- Openx (Pasadena, CA)
- Operations Concepts, Inc. (Cherry Hill, NJ)
- Operations Technology Inc (Blairstown, NJ)
- Operative (New York, NY)
- Opex Corp. (Moorestown, NJ)
- Opgal Ltd (Karmiel, ISR)
- Ophir Optics, LLC (North Andover, MA)
- Ophir-Spiricon, Inc. (Logan, UT)
- Opinionlab (Highland Park, IL)
- Opis Renewables (Chicago, IL)
- Opnext, Inc. (Fremont, CA)
- Opotek Inc. (Carlsbad, CA)
- Opprocon Inc (Ft Wright, KY)
- Opsens Inc. (Quebec, QC, CAN)
- Opsera Limited (Berkshire, GBR)
- OpSource (Santa Clara, CA)
- Opta Minerals, Inc. (Waterdown, ON, CAN)
- OPTEC International, Inc. (Carlsbad, CA)
- OPTEC International, Inc. (Carlsbad, CA)
- Optec Technology Limited (Kowloon, HKG)
- Optech Inc. (North York, ON, CAN)
- Optek Technology, Inc. (Carrollton, TX)
- Optel Group (Quebec, QC, CAN)
- Optel Vision (Quebec, QC)
- Optelecom-NKF (2801 DD Gouda, NLD)
- Optelian (Marietta, GA)
- Optellios Inc. (Newtown, PA)
- Optessa (Edmonton, AB, CAN)
- Optex Morse, Inc. (Chino, CA)
- Optex Systems, Inc. (Richardson, TX)
- Optex, Inc. (Rancho Dominguez, CA)
- Opti-Sciences, Inc. (Hudson, NH)
- Optiant Inc. (Burlington, MA)
- Optibase Ltd. (Herzlia, ISR)
- Optibrand Ltd., LLC (Ft. Collins, CO)
- Optibrium Ltd. (Cambridge, GBR)
- Optic Valley Photonics, Inc. (Tucson, AZ)
- Optica, Inc. (Colorado Springs, CO)
- Optical Building Blocks Corp. (Birmingham, NJ)
- Optical Cable Corp. (Roanoke, VA)
- Optical Communication Products Inc (Woodland Hills, CA)
- Optical Dimensions (Foothill Ranch, CA)
- Optical Encoder (Chatsworth, CA)
- Optical Image Technology, Inc. (State College, PA)
- Optical Metrology Ltd (North Andover, MA)
- Optical Metrology Services (Hertfordshire, GBR)
- Optical Research Associates (Pasadena, CA)
- Optical Scientific, Inc. (Gaithersburg, MD)
- Optical Wavelength Laboratories (Whitewater, WI)
- Optical Zonu Corp. (Van Nuys, CA)
- Opticis North America, Inc. (Richmond Hill, ON)
- OPTICOM GmbH (Erlangen, DEU)
- Opticomm Corp. (San Diego, CA)
- Opticote, Inc. (Franklin Park, IL)
- OpticsPlanet, Inc. (Northbrook, IL)
- Optiforms Inc. (Temecula, CA)
- OptiGrate Corp (Oviedo, FL)
- Optikos Corporation (Wakefield, MA)
- OPTILED Technology, LLC (Henderson, NV)
- Optilia Instruments AB (Sollentuna, SWE)
- Optima Batteries (Milwaukee, WI)
- Optima Central (Colleyville, TX)
- Optima Chemical Group LLC (Douglas, GA)
- Optima Electronic Packaging Systems (Lawrenceville, GA)
- Optima Group Inc. (Fairfield, CT)
- Optimal Engineering Systems, Inc. (OES) (Van Nuys, CA)
- Optimal Group Inc. (Montreal,, CAN)
- Optimal IdM, LLC (Land O' Lakes, FL)
- Optimal Payments (Calgary, AB, CAN)
- OptimalLED (Toledo, OH)
- Optimalon Software (Kitchener, ON, CAN)
- OptimalPlus Ltd. (San Jose, CA)
- OptimalTest (Nes Ziona, ISR)
- Optimedica Corp. (Santa Clara, CA)
- Optimizely (New York, NY)
- Optimum Communications Services, Inc (Edmonton, Alberta, CAN)
- Optimum Energy, LLC (Seattle, WA)
- Optimum Lightpath (Jericho, NY)
- Optinuity® (Bethesda, MD)
- Optio Software, Inc. (Alpharetta, GA)
- Optio3, Inc. (Seattle, WA)
- Option NV (Leuven, BEL)
- Option NV (Leuven, BEL)
- OptionsCity Software, Inc. (Chicago, IL)
- Optionvue Systems International Inc. (Libertyville, IL)
- OptiPro Systems (Ontario, NY)
- OptiProERP (Irvine, CA)
- Optiscan, Inc. (Phoenix, AZ)
- OptiSwitch Technology Corp. (San Diego, CA)
- OptiTex International (Petach-Tikva, ISR)
- Optiwise.ai (Newark, CA)
- Optixtal, Inc. (Philadelphia, PA)
- Opto 22 (Temecula, CA)
- Opto Diode Corporation (Camarillo, CA)
- Opto Diode Corporation (San Jose, CA)
- Opto Technology, Inc. (Wheeling, IL)
- Optobahn Corporation (Torrance, CA)
- Optodyne Inc. (Compton, CA)
- OPTOELECTRONICS COMPANY LTD (Hertfordshire, GBR)
- OptoLum, Inc. (Tempe, AZ)
- Optoma USA (Fremont, CA)
- Optomax Image Analysis Products (Hollis, NH)
- Optomec (Albuquerque, NM)
- Optometrics LLC (Ayer, MA)
- Optosecurity Inc. (Québec, CAN)
- OptoSigma Corp. (Santa Ana, CA)
- Optotherm, Inc. (Sewickley, PA)
- Optowiz (Gyeonggi-do, PRK)
- Optra, Inc. (Topsfield, MA)
- Optrans Universal Corp. (Cohoes, NY)
- Optricity Corp. (Research Triangle Park, NC)
- Optronics (Goleta, CA)
- OPTRONICS International (Muskogee, OK)
- Optum Inc. (Eden Prairie, MN)
- Opus Healthcare Solutions, Inc. (Austin, TX)
- OpVista, Inc. (Milpitas, CA)
- OPW Engineered Systems (Lebanon, OH)
- OPW Fueling Components (Hamilton, OH)
- OQO Inc. (San Francisco, CA)
- OR Technology (Campbell, CA)
- Oracle America (Redwood City, CA)
- Oracle Communications, Inc. (Vancouver, BC, CAN)
- Oracle Lighting (Metairie, LA)
- Oracle Lighting (Metairie, LA)
- Oracle Lighting (Metairie, LA)
- Oran Safety Glass Ltd (Yehuda, ISR)
- ORAND Systems, Inc. (Mississauga, ON)
- Orange (London, GBR)
- Orange EV (Riverside, MO)
- Orange Peel - Rotating Shaft Guards (Cedarburg, WI)
- Orange Research, Inc. (Milford, CT)
- OrangeHRM, Inc. (Secaucus, NJ)
- Orases (Frederick, MD)
- OraTech, LLC (South Jordan, UT)
- Orative Corp. (San Jose, CA)
- Orb Networks, Inc. (Oakland, CA)
- Orb Optronix (Redmond, WA)
- ORBCOMM Inc (Rochelle Park, NJ)
- Orbel Corp. (Easton, PA)
- Orbex Group (Fremont, CA)
- Orbia (Waltham, MA)
- Orbimatic GmbH (Peterborough, GBR)
- ORBIS Corp. (Oconomowoc, WI)
- Orbis Engineering Field Services Ltd. (Edmonton, AB, CAN)
- Orbit Communication Systems, Inc. (Deerfield Beach, FL)
- Orbit Industries, Inc. (Los Angeles, CA)
- Orbit Industries, LLC. (Washougal, WA)
- Orbit International Corp. (Hauppauge, NY)
- Orbital Energy Group, Inc. (Houston, TX)
- Orbital Insight (New York, NY)
- Orbitec Electronics (Salinas, CA)
- Orbitform Group (Jackson, MI)
- OrbitGPS LLC (Darien, CT)
- Orbograph (Billerica, MA)
- Orbotech Inc. (Billerica, MA)
- Orbytel (Cleveland, OH)
- Orca Marine Cooling Systems (Bellingham, WA)
- Orcanos (Tel-Aviv, ISR)
- Orchestro (Mclean, VA)
- Orchid Orthopedic Solutions (Holt, MI)
- Orchids Paper Products Co. (Pryor, OK)
- Orcus (Stilwell, KS)
- ORD Solutions (Cambridge, CAN)
- Orderbutton (Louisville, KY)
- Ordia Solutions, Inc. (Vienna, VA)
- OrdinarySoft (Kiev, RUS)
- Ordr (Santa Clara, CA)
- OrecX, LLC (Chicago, IL)
- Oregon Rule Co. (Oregon City, OR)
- Oregon Scientific Inc (Tualatin, OR)
- Oregon Steel Mills, Inc (Portland, OR)
- Oregon Wire Products (Portland, OR)
- Orelis S.A.S (Miribel, FRA)
- Oremex Resources Inc. (BC, CAN)
- Oren Elliott Products, Inc. (Edgerton, OH)
- Orenco Systems, Inc. (Sutherlin, OR)
- Orenda Pulverizers (Markham, ON, CAN)
- Orex Minerals Inc. (Vancouver, BC, CAN)
- Organic Dyes and Pigments (Lincoln, RI)
- Organic Lighting Systems (Azusa, CA)
- Organic Lighting Systems, Inc. (Azusa, CA)
- Organica Water, Inc (Princeton, NJ)
- Organica Water, Inc. (Princeton Junction, NJ)
- Organimed LLC (Miramar, FL)
- Organix Solutions (Maple Grove, MN)
- Organogenesis Inc. (Canton, MA)
- Organomation Associates, Inc. (Berlin, MA)
- Orgatech (Orange, CA)
- Oridion Systems, Ltd. (Needham, MA)
- Oriel Instruments Corp. (Stratford, CT)
- Oriel, Inc. (Madison, WI)
- Oriental Motor U.S.A. Corp. (Torrance, CA)
- Origene Corporation (Rockville, MD)
- Origin (San Francisco, CA)
- Origin (San Francisco, CA)
- ORIGIN Freight Brokerage LLC (Indianapolis, IN)
- Origin PC Corporation (Miami, FL)
- Original Software (Westmont, IL)
- Originate Labs (San Francisco, CA)
- OriginClear, Inc (Los Angeles, CA)
- OriginClear, Inc. (McKinney, TX)
- OriginLab Corp. (Northampton, MA)
- ORing Industrial Networking (Taipei County, TWN)
- ORing Industrial Networking Corp. (Hsin Tien, TWN)
- Oriol, Inc. (Santa Clara, CA)
- Orion Corp. (Grafton, WI)
- Orion Energy Systems, Ltd. (Manitowoc, WI)
- Orion Fans (Montreal, QC, CAN)
- Orion Fittings (Kansas City, KS)
- Orion Group Holdings Inc. (Houston, TX)
- Orion Instruments (Baton Rouge, LA)
- Orion Marine Group Inc. (Houston, TX)
- Orion Packaging Systems, Inc. (Collierville, TN)
- Orion Research, Inc. (Beverly, MA)
- Orion Safety Products (Peru, IN)
- Orison Marketing, LLC (Abilene, TX)
- Oriux (Houston, TX)
- Orival, Inc. (Englewood, NJ)
- Orkin Exterminating Co., Inc. (Mc Mechen, WV)
- Orkin Pest Control (Sharon Hill, PA)
- Orlando Spring Co. (Los Alamitos, CA)
- Orled (Tigard, OR)
- Ormat Technologies, Inc. (Reno, NV)
- ORMCO (Orange, CA)
- ORMEC Systems Corp. (Rochester, NY)
- Ornamental Mouldings, Ltd. (Archdale, NC)
- ORO Manufacturing Co. (Monroe, NC)
- Orolia (Rochester, NY)
- Orolia (Lanham, MD)
- Oros (Dulles, VA)
- Orpak USA, Inc (Hackensack, NJ)
- Orr Lighting (Toronto, ON, CAN)
- Orsay Physics (Fuveau, FRA)
- Orscheln Products, LLC (Moberly, MO)
- OrSense Ltd (Petah-Tikva, ISR)
- Orsus (New York, NY)
- Orsus Solutions, Ltd. (New York, NY)
- Orsyp S.A. (Bedford,, MA)
- Ortal (Canoga Park, CA)
- ORTEC (Atlanta, GA)
- Ortech (Mount Kisco, NY)
- Ortech Advanced Ceramics (Sacramento, CA)
- Ortega Infosystems (Fremont, CA)
- Ortega Infosystems (Fremont, CA)
- Ortho Organizers, Inc. (Carlsbad, CA)
- Ortho-Clinical Diagnostics, Inc. (Raritan, NJ)
- OrthoAccel Technologies, Inc (Houston, TX)
- OrthoGraph Ltd. (Budapest, HUN)
- OrthoGrid Systems, Inc. (Salt Lake City, UT)
- OrthoPediatrics Corp. (Warsaw, IN)
- ORTHOsoft Inc. (Montreal, CAN)
- Ortiva Wireless, Inc. (La Jolla, CA)
- Ortronics, Inc. (New London, CT)
- Orus3D (Boisbriand, CAN)
- Orvito Inc. (Waltham, MA)
- Orwak USA LLC (Shelton, CT)
- Oryon Technologies, Inc (Addison, TX)
- Oryx Simulations AB (Umeå,, SWE)
- OS33, Inc (Brooklyn, NY)
- Osa-Lator Manufacturing, Inc. (Niagara Falls, NY)
- OSAI USA (Chicopee, MA)
- Osborn (Hamilton, OH)
- Osborne Coinage Co. (Cincinnati, OH)
- Osborne Industries, Inc. (Osborne, KS)
- Oscar Davidson (Atlanta, GA)
- Oscilla Power Inc. (Seattle, WA)
- Oscium (Oklahoma City, OK)
- OSD Displays (Orlando, FL)
- OSE Systems (San Diego, CA)
- oseberg (Oklahoma City, OK)
- Oseco Elfab (Broken Arrow, OK)
- Osellus, Inc. (Toronto, ON, CAN)
- Osensa Innovations Corp. (Coquitlam, BC, CAN)
- OSG Power Tools (Bensenville, IL)
- OSG USA, Inc. (St Charles, IL)
- Oshkosh Defense (Oshkosh, WI)
- Osi Fibercomm (Hawthorne, CA)
- OSI Laser Diode, Inc. (Edison, NJ)
- OSI Laser Diode, Inc. (Edison, NJ)
- OSI Laser Diode, Inc. (Edison, NJ)
- OSI Maritime Systems (Burnaby, BC, CAN)
- OSI Optoelectronics, Inc. (Hawthorne, CA)
- OSI Optoelectronics, Inc. (Hawthorne, CA)
- Osi Systems (Hawthorne, CA)
- OSI Systems Inc. (Cherry Hill, NJ)
- OSI Systems, Inc. (Atlanta, GA)
- Osisoft Inc (San Leandro, CA)
- Oskar Antipollution of America (Montreal, QC)
- OsKar Antipollution of Canada Inc. (Montreal, Quebec H1J 1H6, CD, CAN)
- Osmonics (Minnetonka, MN)
- Osprey Management, LLC (Marietta, GA)
- OSRAM Opto Semiconductors (Sunnyvale, CA)
- OSRAM Opto Semiconductors GmbH (Regensburg, DEU)
- OSRAM SYLVANIA (Hillsboro, NH)
- Osram Sylvania Inc., Chemicals & Metallurgical Products (Towanda, PA)
- OSRAM SYLVANIA, Process Heat (Exeter, NH)
- Ossberger Turbines, Inc. (Powhatan, VA)
- Ossia, Inc (Redmond, WA)
- Ossia, Inc. (Bellevue, WA)
- Ossid, LLC (Rocky Mount, NC)
- Ostara Systems Ltd (Milton Keynes, GBR)
- OsteoBiologics, Inc. (San Antonio, TX)
- Osteotech (Eatontown, NJ)
- OstoSolutions, LLC (Sonoita, AZ)
- OTC-SPX Corp. (Owatonna, MN)
- OTEC Precision Finish, Inc. (Acton, MA)
- OTEK Corp. (Tucson, AZ)
- OTG Consulting (Frisco, CO)
- Other World Computing (Woodstock, IL)
- Other World Computing (Woodstock, IL)
- Other World Computing, Inc. (Woodstock, IL)
- Other World Computing, Inc. (Woodstock, IL)
- Otis Elevator Co. (Aberdeen, SD)
- Otis Elevator Co. (Farmington, CT)
- Otis Elevator Company (Farmington, CT)
- OTM (Wapakoneta, OH)
- OTN (South San Francisco, CA)
- OTP Industrial Solutions (Columbus, OH)
- OTSAW Digital Inc (South San Francisco, CA)
- OTT HydroMet (Loveland, CO)
- Otter Creek (Tillsonburg, ON, CAN)
- Otter Products, LLC (Fort Collins, CO)
- Otter Tail Power Company (Fergus Falls, MN)
- OtterBox (Fort Collins, CO)
- OTTO Controls (Carpentersville, IL)
- OTTO Engineering, Inc (Carpentersville, IL)
- OTTO Engineering, Inc (Carpentersville, IL)
- Otto Environmental Systems North America, Inc. (Charlotte, NC)
- OTX (New York, NY)
- Ounce Labs, Inc. (Waltham, MA)
- Ouster, Inc. (San Francisco, CA)
- OutBack Power Technologies, Inc. (Arlington, WA)
- Outdoor Creative Concepts (OCC) (Indianapolis, IN)
- Outdoor Power Equipment Institute (OPEI) (Alexandria, VA)
- Outertech (Coburg, DEU)
- Outlook Group (Neenah, WI)
- Outlook Import Software (Toronto, ON, CAN)
- Outokumpu Group (Richburg, SC)
- Outpost24 AB (Karlsrkona, SWE)
- OutProtect (Saint Louis, MO)
- Outsource Logistics, LLC (Valdosta, GA)
- outsourceIT Inc. (La Plata, MD)
- OutStart, Inc. (Boston, MA)
- Outwater Plastics Industries, Inc. (Bogota, NJ)
- Ovako (Charlotte, NC)
- Ovation Products (Bethlehem, PA)
- Oven Industries, Inc. (Camp Hill, PA)
- Overdrive PC, LLC (Richmond, VA)
- Overhead Door Company (Albany, GA)
- Overland Storage, Inc. (San Diego, CA)
- Overly Door Co. (Greensburg, PA)
- Overly Hautz Motor Base Co. (Lebanon, OH)
- Oversi, Ltd. (Petach Tikva, ISR)
- Overton Moore Properties (Gardena, CA)
- Overture Networks, Inc. (Richardson, TX)
- Ovid Technologies (Norwood, MA)
- OvisLink Group (Hsin-Tien City, Taipei, TWN)
- Ovivo LLC (Austin, TX)
- OWC Digital (Woodstock, IL)
- Owen Software (Rockville, MD)
- Owens Corning (Toledo, OH)
- Owens Design, Inc. (Fremont, CA)
- Owens-Illinois, Inc. (Berlin, OH)
- Owens-Illinois, Inc. (O-I) (Brampton, ON, CAN)
- Owens-Illinois, Inc. (O-I) (Toledo, OH)
- Owl Computing Technologies (Ridgefield, CT)
- Owl Energy Technologies Inc., Owl Motor Control Division (Tuckahoe, NY)
- Owl Motor Control (Tuckahoe, NY)
- Owosso Corp. (Owosso, MI)
- Owtsar Technologies Pvt Ltd (Chennai, IND)
- Oxane Materials (Houston, TX)
- OxBlue Corporation (Atlanta, GA)
- Oxbow Activated Carbon (Oceanside, CA)
- Oxford Advanced Surfaces Ltd (Yarnton, GBR)
- Oxford Gene Technology (Tarrytown, NY)
- Oxford General Industries, Inc. (Prospect, CT)
- Oxford Immunotec USA, Inc. (Marlborough, MA)
- Oxford Instruments (Elk Grove Village, IL)
- Oxford Instruments (Concord, MA)
- Oxford Instruments (Concord, MA)
- Oxford Instruments America Inc (Concord, MA)
- Oxford Instruments Analytical (High Wycombe, GBR)
- Oxford Lasers, Inc. (Shirley, MA)
- Oxford Performance Materials, Inc (Enfield, CT)
- OXIS Energy Limited. (Oxfordshire, GBR)
- Oxlo Systems Inc. (Broomfield, CO)
- Oxonica Limited (Yarnton, Kidlington , Oxford, GBR)
- OXXO Care Cleaners (Hollywood, FL)
- Oxycom Fresh Air B.V. (HEERENVEEN, NLD)
- Oxygen Forensics (Alexandria, VA)
- Oxygen Software (Moscow, RUS)
- OxySense, Inc. (Las Vegas, NV)
- Oxysox (Troy, MI)
- OYA Solar Inc. (New York, NY)
- Oystar Group (Cincinnati, KY)
- OYSTAR USA (Fairfield, NJ)
- OYSTAR USA Inc., Food & Packaging Divs. (Morganville, NJ)
- Oz Architecture (Boulder, CO)
- Oz Lifting Products LLC (Winona, MN)
- OZ Optics, Ltd. (Carp, ON, CAN)
- Ozburn-Hessey Logistics, LLC (Brentwood, TN)
- Ozmo Devices (Palo Alto, CA)