| Ajax Systems | |
| Aksmarket | Kiev |
| AKU Technologies Ltd | Kiev |
| Aldesign Webstudio | Kiev |
| All-Ukrainian Association of Computer Clubs | Kiev |
| Allsoft | Kiev |
| Allsubmitter | Kiev |
| Alpha Studio | Kiev |
| Alpha-Registrator | Kiev |
| Alphanova | |
| AlphaSSL | Kiev |
| Alter Eco | |
| Altima Ltd | Kiev |
| AltSolution | |
| Alva Commerce | Zakarpattia |
| AM-Soft | Kiev |
| AMB Group | Kiev |
| Amconsult | |
| Ametists | Kiev |
| AmiFactory | Kiev |
| Andormeda | Kiev |
| ANDRIY.CO | Kiev |
| Antena.com.ua | Kiev |
| Antivirus at | Kiev |
| Antosh & Co | Kiev |
| Aoza Tech | Kiev |
| Apelsun Software | Kiev |
| App2World.com | Kharkiv |
| AppControls | Kiev |
| Appflame | |
| Appointer | |
| Appus Studio | Kharkiv |
| APS Smart | |
| AR.TEAM | |
| Archer | |
| ArchySoft | Kiev |
| Areas Code | Lviv |
| Areon Consulting | Kiev |
| Ariolic Software | Zaporizhzhia |
| Art Joker | Kharkiv |
| ArtAdmires | Odessa |
| Artelogic | |
| Artem Syzonenko | |
| Artkai | Kiev |
| ARTKB | |
| Artweb | Kiev |
| AS6723 | Kiev |
| ASBIS Ukraine | Kiev |
| Asign | Lviv |
| Askep | |