| Name | Region |
|---|---|
| Ajaxmasters | Bucharest |
| Alex Berendei | Bucharest |
| Alfa Developers | |
| Alfa Software | Bucharest |
| Alfa Web | Prahova |
| Algorithm | Galați |
| Algotech Solutions | |
| Alkotech Labs | |
| AllNet | Bucharest |
| Alpha Bank Romania | Bucharest |
| Altanet | Dolj |
| Alteca Service | Bucharest |
| Altmedia Telecom | |
| Altom Consulting | Cluj |
| Amasoft Expert | Constanța |
| Amber Studio | |
| AMC Ro Studio | |
| AMEDEO Roumanie | Bucharest |
| Amorphys Design S.R.L. | Bucharest |
| Amplusnet S.R.L. | Mureș |
| AMSimCEL | |
| Analizoare de retea | Bucharest |
| Andonet.ro | Bucharest |
| Andrisoft S.R.L. | Timiș |
| Android Geeks | Argeș |
| Antibiotice S.A. | |
| Antreprenoria | |
| AnySoft | |
| Apachemedia | Bucharest |
| AppCenter | |
| AppDemoStore.com | Iași |
| Appsolute.ly | Bucharest |
| Appssemble-Soft S.R.L. | |
| AQUASoft | |
| Aqurate | |
| AR Elektronik S.R.L. | Bucharest |
| ARC Consulting | |
| Arezzo Sky S.R.L. | Bucharest |
| Arhipac | Bihor |
| Arlett Consulting | |
| Arobs | Cluj |
| AROBS | |
| Around25 | Cluj |
| Art Extension S.R.L. | Arad |
| Artcore Computers | Iași |
| ARTHUB Bucharest | |
| Artis IT Univers | Iași |
| Artserv Computers S.R.L. | Maramureș |
| ArtSoft Consult | Cluj |
| Artvevo Design Project S.R.L. | Constanța |