| 123ContactForm | Timiș |
| 123host.Ro | Iași |
| 2Performant | Bucharest |
| 360Hub | |
| 3D In The Box | |
| 3DArtStudio | |
| 3Media Advertising | |
| 3Waves Net S.r.l. | Timiș |
| 4E Software | |
| 4PSA | Bucharest |
| 4Us Consulting | |
| 5 Point Solutions | Iași |
| 5-Games.com | Sibiu |
| 7Code | |
| 888sparkware | |
| AB Soft Timişoara | Timiș |
| Abac | Cluj |
| Abis Studio | |
| ABIT Technologies | |
| ABSI Romania | Bucharest |
| Academia de Studii Economice din Bucuresti | |
| AccceptSoftware | Bucharest |
| Acces Soft | Constanța |
| Access Data Media Service S.R.L. | Bucharest |
| ACip Hosting | Bistrița-Năsăud |
| AconiTech | |
| ACROM | Ilfov |
| Activ Consulting One S.R.L. | Bucharest |
| Activize.Tech | |
| AD Auto Total | |
| ADA Computers | Bucharest |
| AdLine Solutions | |
| AdNet Telecom | Bucharest |
| Adonis Software | |
| Adplus România | Dolj |
| AdrVest | |
| Advanced Installer | Dolj |
| Advanced Web Ranking | Dolj |
| Advantage Seosem | Prahova |
| AdWorks! Media | Bucharest |
| Agenda Soft | Vâlcea |
| Agentia Flat Studio S.R.L. | |
| Agentia re7consulting | |
| Agenția Spațială Română | Bucharest |
| Agentia WEB Bucuresti | Bucharest |
| AgerMag.rog | Bucharest |
| Agilio Software | Cluj |
| Agis Computer | Bucharest |
| AgriCloud | |
| AgriCloud | |