Young Digital Poland
- Operating in the interactive software market since 1990, primarily as a creator of language learning software and other educational software packages.
- http://www.ydp.com.pl/

ATM S.A.
- Specializes in development of telecommunication networks, computer security, IT infrastructure management and provides broadband telecommunication services.
- http://www.atm.com.pl/

Softbank S.A.
- Produces software for banking and financial services sectors.
- http://www.softbank.pl/eng

CERT Polska
- The Computer Emergency Response team. Deals with security-related incidents within Polish computer networks.
- http://www.cert.pl/english.html

The Research and Academic Computer Network (NASK)
- Provides Internet connection, data communication and network security services to the Polish scientific and academic community. Administers the domains register in the .pl zone.
- http://www.nask.pl/nask_en/

Teleca (Poland) Sp. z o.o.
- The Polish subsidiary of the Teleca group, supplier of software engineering services.
- http://www.teleca.pl