| Name | Country | Market Cap (US$) |
|---|
| Apptitude Inc. | Canada | Private |
| Apptivity Corporation | United States | Private |
| APW Shanghai Ltd. | China | Private |
| AQUARIUS PRODUCTION COMPANY LIMITED LIABILITY COMPANY | Russia | Private |
| Aqueduct, Inc. | United States | Private |
| AQUILA GROUP HOLDINGS LTD | United Kingdom | Private |
| AquiTec International | United States | Private |
| Architech Corporation | United States | Private |
| ArchPro Design Automation, Inc. | United States | Private |
| ARCIRIS LTD | United Kingdom | Private |
| Arco Computer Products llc. | United States | Private |
| arctic-cooling switzerland AG | Switzerland | Private |
| ARDENT SOFTWARE LTD | United Kingdom | Private |
| Ardext Technologies | United States | Private |
| AREA S.P.A. | Italy | Private |
| Arge Informationssysteme in der gesetzlichen Krankenversicherung | Germany | Private |
| Ariel Networks, Inc. | Japan | Private |
| ARIMA DISPLAY JAPAN CO.,LTD. | Japan | Private |
| ARINSO FRANCE | France | Private |
| ARINSO UK LTD | United Kingdom | Private |
| ARIS Corporation | United States | Private |
| Aris Global LLC | United States | Private |
| ARK AS | Norway | Private |
| ASAHI GLASS FINE TECHNO CO.,LTD. | Japan | Private |
| ASAHI SEIKO CO.,LTD. | Japan | Private |
| ASAHI TSUSHIN CO.,LTD. | Japan | Private |
| Ascendent Systems | United States | Private |
| Ascential Software Corporation | United States | Private |
| ASCENTIAL SOFTWARE LTD | Republic of Ireland | Private |
| ASCENTIAL SOFTWARE LTD | United Kingdom | Private |
| Askey Computer Co.,Ltd | Taiwan | Private |
| ASPASIEL SRL | Italy | Private |
| ASPENTECH LTD. | United Kingdom | Private |
| Asseco Poland SA | Poland | Private |
| Asset InterTech, Inc. | United States | Private |
| ASSIST, K.K. | Japan | Private |
| Assistive Technology Group, Inc. | United States | Private |
| AST Research, Incorporated | United States | Private |
| ASUS Czech s.r.o. | Czech Republic | Private |
| AT&T Solutions | United States | Private |
| ATA Testing Authority, Inc. | China | Private |
| Atari Corporation | United States | Private |
| ATARI EUROPE SAS | France | Private |
| Atari Inc | United States | Private |
| ATARI ITALIA SPA | Italy | Private |
| ATEC Group, Inc. | United States | Private |
| ATEX GROUP LTD | United Kingdom | Private |
| Atipa Corporation | United States | Private |
| Atlance SA | Belgium | Private |
| Atlantic Data Services, Inc. | United States | Private |
| Atlas Commerce | United States | Private |
| Atle AB | Sweden | Private |
| ATOS ORIGIN IT SERVICES LTD | United Kingdom | Private |
| Atos Origin North America | United States | Private |
| Atrion International, Inc. | Canada | Private |
| Attunity Inc. | United States | Private |
| ATVI FRANCE | France | Private |
| AUDATEX (U K) LTD | United Kingdom | Private |
| AUDATEX HOLDINGS, LLC | United States | Private |
| Audatex North America Inc | United States | Private |
| AudioAudit, Inc. | United States | Private |
| Audre Recognition Systems | United States | Private |
| Augment Systems Incorporated | United States | Private |
| Auriga-Aurex S.A. De C.V. | Mexico | Private |
| Auspex Systems, Inc. | United States | Private |
| Austin Logistics, Inc. | United States | Private |
| Austin Ribbon & Computer Supplies, Inc | United States | Private |
| Australian Electronic Manufacturing Services Pty. Limited | Australia | Private |
| Authenex, Inc. | United States | Private |
| Autocont A.S. | Czech Republic | Private |
| Autodesk Development S à.r.l. | Switzerland | Private |
| Automated Graphic Systems | United States | Private |
| Automated Touchstone Machines Limited | Singapore | Private |
| AUTONOMY SYSTEMS LTD | United Kingdom | Private |
| Avant! Corporation | United States | Private |
| Avant, Inc. | United States | Private |
| Avantgarde Business Solutions GmbH | Germany | Private |
| Avantis Ltd | United Kingdom | Private |
| AVAYA COMMUNICATION ISRAEL LTD. | Israel | Private |
| Avenue A/Razorfish | United States | Private |
| Avere, Inc. | United States | Private |
| AVERY Dennison Deutschland GmbH | Germany | Private |
| Aveva AB | Sweden | Private |
| AVEVA ENGINEERING IT LTD | United Kingdom | Private |
| AVEVA SOLUTIONS LTD | United Kingdom | Private |
| Avinti Inc | United States | Private |
| Aviom, Inc. | United States | Private |
| Avision (Suzhou) Co., Ltd. | China | Private |
| Aviv Corporation | United States | Private |
| Avocent Huntsville Corp | United States | Private |
| AVOCENT INTERNATIONAL LTD | Republic of Ireland | Private |
| AW Computer Systems, Inc. | United States | Private |
| Axentra Corporation | Canada | Private |
| Axi NV | Belgium | Private |
| AXIOS SYSTEMS LTD. | United Kingdom | Private |
| Axiowave Networks, Inc. | United States | Private |
| Axis Communications Ab | Sweden | Private |
| AXIS COMPUTERS SDN BHD | Malaysia | Private |
| AXWAY SOFTWARE | France | Private |
| Azul Systems Inc | United States | Private |
|
Prev