Institutions
Polish Financial Supervision Authority
http://www.knf.gov.pl/en/
Central Securities Depository of Poland (KDPW)
http://www.kdpw.pl/en/Pages/Home_en.aspx
Sector related
Office of Electronic Communications [website contains market reports]
http://www.en.uke.gov.pl/
Polish Chamber of Electronic Communication (PIKE)
http://www.pike.pl/