| WebWave | |
| WebXL | Greater Poland |
| WEBY Sp. z o.o. | |
| Wecode Agency | |
| WeExpert | |
| Wekta | Masovian |
| Wenanet | Greater Poland |
| Wenkly Studio | Silesian |
| Wer.pl | Lesser Poland |
| Werb.pl | Masovian |
| Weupcode Sp. z o.o. | |
| Whirly | |
| White Label Coders | |
| Whoishiring.io | |
| Wi-komp | West Pomeranian |
| Widelab | |
| WIDMO Spectral Technologies Sp. z o.o. | |
| Wiecom Sp. z o.o. | Pomeranian |
| Wieża s.c. | Masovian |
| Wifikomputer | Masovian |
| Wikidot Inc. S.A. | |
| Wilk Elektronik S.A. | Silesian |
| Willson & Brown Sp. z o.o. Sp. k. | Masovian |
| Winalife Sp. z o.o. | |
| Wincima | Lower Silesian |
| Wind Telecom Sp. z o.o. | Lesser Poland |
| Windows Communicator | Silesian |
| Windux.pl | Lower Silesian |
| WinGBD | Silesian |
| Winged IT | |
| WiRan Sp. z o.o. | |
| Wise People | |
| Wisedigital | |
| WiWi Agencja Interaktywna | |
| Wizards.Space | |
| WizjaNet Sp. z o.o. | Silesian |
| Wobee Design Lab Sp. z o.o. | |
| WojoWeb | |
| Wojskowa Akademia Techniczna | |
| Wojskowa Akademia Techniczna - Wydział Cybernetyki | Masovian |
| Women in Technology Poland | |
| Wonga.pl Sp. z o.o. | |
| Woodpecker.co S.A. | |
| Woohoo | |
| WORD Software | Silesian |
| Workband Sale Szkoleniowe | |
| Workin.Senatorska | |
| WORKITNOW Sp. z o.o. | |
| WorkTrips Sp. z o.o. | |
| Workwill | Lesser Poland |