| Areus Infokommunikációs Zrt. | Budapest |
| ArgonSoft Informatikai Szolgáltató Kft. | |
| Arrow ECS Kft. | |
| Artamax Creative Solutions | Budapest |
| Artsoft Hungary Kft. | |
| ARworks | Budapest |
| ASBIS Magyarország Kft. | Budapest |
| ASPnet.hu | Budapest |
| Assister | |
| Asyst Solutions Zrt. | Budapest |
| ATL Kft. | Pest |
| Atoll Technologies | Budapest |
| ATW Internet Kft. | Budapest |
| Audio Partner Kft. | |
| Automizy | |
| Autosoft | Budapest |
| AutSoft Zrt. | |
| Avatao | |
| Avian Systems | |
| Avicor Biotech | |
| AWEX Multimedia | Budapest |
| AXEL Professional Softwares Kft. | Bács-Kiskun |
| Axico Informatikai Kft. | Budapest |
| AxisVM | Budapest |
| Babilon Informatika Kft. | Budapest |
| Baconsult Kft. | |
| Balasys | |
| Bank360 Zrt. | Budapest |
| Bankár Holding Zrt. | Budapest |
| Bankmonitor | Budapest |
| BAOBAB Coworking Oasis | |
| Barion Payment, Inc. | |
| BaSys | |
| BauApp Kft. | |
| Bay Zoltán Alkalmazott Kutatási Közhasznú Nonprofit Kft. | |
| BDN Automotive Kft. | |
| Beachegg Zrt | |
| Bell-Tron Kft. | Budapest |
| Bemind Kft. | |
| BeMyBoss | |
| BestByte | Budapest |
| Béta Software | Budapest |
| BHE Bonn Hungary Electronics Ltd | Budapest |
| BiFarma Ltd | Budapest |
| BIG FISH Internet-technológiai Kft. | Budapest |
| BioDigit | |
| BioTalentum | |
| Bishop & Co. | Csongrád |
| Bitnet Group Kft. | |
| BitNinja | |