Established in 1991, Ruigrok is a full service research company in Amsterdam, The Netherlands. Our specialties are: - Qualitative research - Online Panel & Community Research - Usability Research Ruigrok NetPanel is member of ESOMAR and therefore complies with the ICC/ESOMAR International Code of Marketing and Social Research Practice. Ruigrok NetPanel is certified with the Research Hallmark [based on ISO 20252] and the ISO 26362 for access panels. Our offices are located in Amsterdam's historic harbour district in a renovated warehouse complex, just minutes from the central train station and Amsterdam city centre.