Dynata, USA

Dunnhumby, United Kingdom

Edelman Data & Intelligence (Edelman Dxi), USA

Euromoney, United Kingdom

Eyesee, Belgium

Explorer Research, USA

Forrester, USA

Frost &Amp; Sullivan, USA

Gartner, USA

GfK, Germany

Globaldata, United Kingdom , CSR

Hall &Amp Partners, USA

Harris Interactive , United States

Intage, Japan

International Data Corporation (IDC), India

IMRB International , India has merged with Kantar Group

Idg Inc, USA

IPSOS, France

Ipsos, United Kingdom

Ipsos, USA

IQVIA, USA

IRI, USA

J. D. Power, USA

JETT customer experience, China

Kantar, United Kingdom

KS & R, USA

LÉGer, Canada

Majestic MRSS, India

Marketxcel, India

Mintel, United Kingdom

MKG Group , France

NPD Group , USA is part of Circana

Nielsen, USA

Nielsen Audio, USA (Formerly Arbitron , United States)

Nus Services Ltd., United Kingdom

Oztam, Australia

Print Measurement Bureau , Canada

Progressive Digital Media , United Kingdom

Research International , United Kingdom

Rockbridge Associates, Inc. , United States

Roy Morgan Research, Australia

RNB Research, India

StrategyOne , United States

Survatio, United Kingdom

SurveyMonkey, USA

Synovate , United Kingdom

Taylor Nelson Sofres (part of the Kantar Group) , United Kingdom

The Harris Pol, USA

Yougov, United Kingdom