Companies beginning with O:
Oakdene Hollins
Oakham Research
Oasis PR
Occams Research
Ocient
Octopus Competitive Intelligence
Ocurate - acquired by Fenix Commerce
Odeeo
Odin Answers
OfficeReports
Ogury
Okay Human - formerly Sympler
Okendo
OKO
Okra
Olinger Group
OMB Research
OMBEA
Ometria
Omneky
Omnilytics - apparently closed 4/25, 9/25
Omnisis Ltd
Omni
On Device
Onclusive
Onclusive
Oncofocus Solutions
OnDemandIQ
One Minute to Midnight
OneCliq - acquired by Dig Insights in July '25
OneMagnify
OnePoll
OnePulse
Online Market Intelligence (OMI)
Onswitch
Ookla
Op4G / Opinions 4 Good - suspended pending fraud allegations
Opeepl
Open Influence
Opendatasoft
OpenSincera - a brand of The Trade Desk who acquired Sincera in 2025
OpenText
OpenVault
OpenWeb
OpenX Technologies
Opiniator
Opinion Matters
Opinion Research Services
OpinionLab - now part of Verint
OpinionRoute
Opinions Group
Opinions LTD
OpinionWay
Opinium
Opinyin
Opportune - owned by Wondrlab
Optable
Optimal Workshop
OptiMine
Optimizely
Optimove
Orange Sheep Research
ORB International
Orbee
Orchard - site problems but still there 9/25
Ormax Consultants Pvt.Ltd.
Ottogrid - previously known as Cognosys - acquired by Cohere May '25
Outdoor Media Association (OMA)
OutPoint
Outra
Outset.ai
Outsource Marketing
Outsource Research - site not found 9/25
OvationMR
Oxford Partnership - was Oxford Research International
Oxygen Brand Consulting
Oxynia Strategic Research - site not found 9/25
OzTAM