| Investnet | |
| Investtech Group Sp. z o.o. | |
| Invette DEV Sp. z o.o. | |
| Invidia | Silesian |
| Invisio | Lesser Poland |
| Invito.pl | Pomeranian |
| Invo Ventures Sp. z o.o. | |
| Inwedo Sp. z .o.o. | |
| IP Partner | Masovian |
| IP Systems Automatyka | Greater Poland |
| iPOS S.A. | |
| IQ PL Sp. z o.o. | Pomeranian |
| iqcode | |
| IQCST | Pomeranian |
| irebu.pl | |
| IRONIN Sp. z o.o. sp. k. | |
| Ironsoft | Masovian |
| ISCAS Sp. z o.o. | |
| ISCG Sp. z o.o. | |
| iSource S.A. | Masovian |
| ISTS | Lesser Poland |
| IT Bridge | Masovian |
| IT Component | Opole |
| IT Hero | |
| IT LeasingTeam Sp. z o.o. | |
| IT Partner | |
| IT School | Greater Poland |
| IT Solutions Architects | |
| IT Vision | Lesser Poland |
| IT-BOX | Lower Silesian |
| IT-Dev Sp. z o.o. | Lower Silesian |
| IT-Dev Sp. z o.o. | |
| IT-SOLVE Mobility Business Partner | |
| IT-SYSTEM | Lower Silesian |
| IT.integro Sp. z o.o. | Greater Poland |
| IT360 Sp. z o.o. | |
| IT4EB Group | |
| iTaxi.pl S.A. | |
| ITB Vega | Kuyavian-Pomeranian |
| ITBees Sp. z o.o. | |
| ITBoom | |
| ITCraft | Kuyavian-Pomeranian |
| itDesk Advertising | |
| itDesk Sp z o.o. | Opole |
| ITEasy Sp. z o.o. | |
| ITECH Sp. z o.o. | Świętokrzyskie |
| Itelite Antennas | Lower Silesian |
| ITENS S.C. | |
| iteo.com | Silesian |
| Iterasec | |