| Name | Region |
|---|---|
| AMB Software Sp. z o.o. | Masovian |
| AMEplus Sp. z o.o. | Silesian |
| American Systems | |
| Amikom S.C. | Podlaskie |
| Amiserwis | Masovian |
| AMM Robot | |
| AMSNET | Lower Silesian |
| AMT Solution | |
| Anchor Software Sp. z o.o. | Greater Poland |
| Anchor Sp. z o.o. | Masovian |
| And Computers | Lesser Poland |
| Android.com.pl | Masovian |
| ANDRZEJEWSKI Automatyzacja i Wyposażenie Produkcji Sp. z o.o. | Łódź |
| Angry Nerd | |
| Angry Nerds | |
| Anixe | |
| Anscom - szkolenia pakietu Office | Pomeranian |
| ANT Sp. z o.o. | |
| Antologic | Lower Silesian |
| Antyweb Sp. z o.o. | |
| aOrion | |
| Apanet S.A. | |
| Apeiron Synthesis | |
| Apel | |
| APER Ventures Sp. z o.o. | |
| ApiTrade | Masovian |
| APIUS Technologies S.A. | |
| Aplinet | |
| APN Promise S.A. | Masovian |
| APN Promise S.A. | |
| Apollo Sp. z o.o. | Subcarpathian |
| App.js Conf | |
| App.Tailors | |
| Appchance | Greater Poland |
| AppCodes | Masovian |
| AppDistrict Sp. z o.o. | |
| Appfleet | |
| Apphawks | Greater Poland |
| Appidea | |
| Applandeo Sp. z o.o. | |
| Applica | |
| Appliscale Sp. z o.o. | Lesser Poland |
| Applover | |
| Applover | |
| Appricotsoft | |
| Appsilon Sp. z o.o. | |
| Appstronauts Sp. z o.o. | |
| Apptension | |
| Apptorium | |
| Appunite S.A. |