| Exorigo-Upos S.A. | |
| Expanse Agency | Łódź |
| Expansio | Greater Poland |
| Experior Venture Fund | Masovian |
| Experssive-One | Greater Poland |
| Explayn | |
| Expose Sp. z o.o. | Masovian |
| Exposit | |
| Expro | Silesian |
| Expromo | |
| EXPROMO Patryk Kormański i Agnieszka Głodek S.C. | |
| Extel Networking Sp. z o. o. | Lesser Poland |
| F&F Filipowski Sp. J. | Łódź |
| F.H.U. Progreson | Silesian |
| F.H.U. Telvicom | Greater Poland |
| F1 IT Consultancy | Pomeranian |
| Fabres Sp. z o.o. | |
| Fabrity Sp. z o.o. | |
| Fabryka Stron | Opole |
| FabrykaStron | West Pomeranian |
| Fair Place Finance | |
| Faith-Net S.C. | Lesser Poland |
| Falcom Sp. z o.o. | Lublin |
| Falcon Games | |
| Falcon V Systems | |
| Faldruk S.C. | Masovian |
| Fancybox | |
| Fandla Faktoring Sp. z o.o. | |
| Fandroid | Lower Silesian |
| Fanum | |
| Fast IT Sp. z o.o. Sp. k. | Łódź |
| Fast White Cat | |
| FastLogic | Łódź |
| Faxiko Sp. z o.o. | Warmian-Masurian |
| FCA Sp. z o.o. | Lesser Poland |
| FCG Apps | |
| Fdgstudio.net | Silesian |
| Felcad | Silesian |
| FELG Software Sp. z o.o. | Lesser Poland |
| Fenige S.A. | |
| Ferguson | Greater Poland |
| Ferro Backup | Lesser Poland |
| Ferrodo Computer Sp. z o.o. | Greater Poland |
| FHU MAGNIS Paweł Bachula | Lesser Poland |
| FIBRAIN Sp. z o.o. | Subcarpathian |
| Fibratech Sp. z o.o. | |
| FibriTech Sp. z o.o. | |
| Fide-Soft | |
| Fidiasz ASI Sp. z o.o. | |
| Figaro Software | Masovian |