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Companies

2,889 companies in the AdTech ecosystem

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OfferUp

Classified Advertising/Marketplace

OfferUp is a mobile-first local marketplace platform connecting buyers and sellers for secondhand goods and services in their communities.

Marketplace TechnologyMobile MarketingBellevue, Washington
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OfferVault

OfferVault

Affiliate Marketing / Performance Marketing

Marketplace TechnologyPerformance Marketing
Ogilvy

Ogilvy

Subsidiary

Creative Agency / Marketing Services

Global creative advertising and marketing agency network founded by David Ogilvy, known for integrated brand strategy, creative campaigns, and digital marketing services.

Marketing AgencyNew York, New York
Ogury

Ogury

Mobile Advertising Technology

Ogury is a mobile advertising technology company that provides a privacy-focused platform for brands and publishers. They use contextual intelligence to deliver ads without relying on personal data, focusing on user consent and transparency. Their technology allows for precise targeting based on content and context.

Contextual AdvertisingMobile Ad PlatformLondon, England
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Okendo

E-commerce Marketing Technology / Customer Experience

Okendo is a customer marketing platform that helps e-commerce brands collect and display customer reviews, ratings, and user-generated content to drive conversions.

Verification & MeasurementE-commerce MarketingSydney, New South Wales
Okera

Okera

Acquired

Data Governance & Security

Okera was a data access and governance platform that enabled secure, policy-based access to data across cloud and on-premise environments before being acquired by Databricks in 2022.

Privacy TechnologyData Management PlatformSan Francisco, California
Okta

Okta

Identity and Access Management (Infrastructure/Security, not core AdTech)

Okta is an identity and access management platform that helps organizations securely connect the right people to the right technologies. It provides cloud-based solutions for user authentication, authorization, and identity lifecycle management.

Privacy & Consent ManagementPrivacy TechnologySan Francisco, California
Oktopost

Oktopost

Social Media Management and Marketing Technology

Oktopost is a leading social media management platform specifically designed for B2B companies. It empowers businesses to manage, monitor, and measure their social media activities, focusing on lead generation, employee advocacy, and demonstrating ROI from social media efforts.

Attribution & AnalyticsSocial Media ManagementRamat Gan, Tel Aviv District
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Olapic

Acquired

Visual Commerce / User-Generated Content

Visual commerce platform that enabled brands to collect, curate, and display user-generated content (UGC) for marketing and e-commerce purposes.

Influencer MarketingE-commerce MarketingNew York, New York
Omneky

Omneky

Creative Automation & AI-Powered Advertising

Creative Management PlatformAI-Powered PlatformSan Francisco, California
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Omnicom

Advertising & Marketing Services

Omnicom Group is one of the world's largest advertising and marketing communications holding companies, operating a portfolio of leading agency brands across creative, media, PR, and specialty marketing services.

Marketing PlatformMarketing AgencyNew York, New York
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Omnicom Group

Advertising and Marketing Services

Omnicom Group is one of the world's largest advertising and marketing communications holding companies, operating a portfolio of leading agency brands across creative, media, PR, and specialty marketing services.

Marketing AnalyticsMarketing AgencyNew York, New York
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Omnicom Media Group

Subsidiary

Media Planning and Buying

Omnicom Media Group is a global media planning and buying agency network, part of Omnicom Group, operating major brands including OMD, PHD, and Hearts & Science.

Attribution & AnalyticsMarketing AgencyNew York, New York
Omniconvert

Omniconvert

Conversion Rate Optimization / E-commerce Optimization

Omniconvert is a comprehensive growth platform designed for e-commerce businesses, offering tools to optimize customer journeys and boost conversions. It provides solutions for A/B testing, personalization, surveys, and advanced customer segmentation to enhance website performance and user experience.

Marketing AnalyticsE-commerce MarketingBucharest
Omnisend

Omnisend

Marketing Automation Software / Ecommerce Marketing Technology

Omnisend is a comprehensive omnichannel marketing automation platform specifically designed for ecommerce businesses. Founded in 2014 and headquartered in London, United Kingdom, the company provides integrated email and SMS marketing solutions that enable online retailers to create personalized customer experiences across multiple channels. The platform combines email marketing, SMS campaigns, web push notifications, and other communication channels into a unified system, allowing ecommerce ...

E-commerce MarketingMarketing AutomationLondon, United Kingdom, Vilnius County
Onalytica

Onalytica

Acquired

Influencer Marketing Technology

Onalytica was an influencer relationship management (IRM) platform that helped brands identify, analyze, and engage with key influencers across social media and digital channels.

Influencer MarketingSocial Media ManagementLondon, England
OnAudience

OnAudience

Defunct

Data Intelligence & Audience Analytics

OnAudience was a data intelligence and audience profiling company that collected behavioral data for advertising targeting before being shut down in 2020 following privacy violations.

Identity ResolutionData Management PlatformWarsaw, Masovian Voivodeship
Onclusive

Onclusive

PR Analytics & Media Intelligence

Onclusive is a global PR analytics and media intelligence platform that helps communications professionals measure earned media impact and demonstrate PR ROI.

Data & AnalyticsMarketing AnalyticsSan Francisco, California
OneLogin

OneLogin

Acquired

Identity and Access Management (not AdTech)

OneLogin is a cloud-based identity and access management (IAM) platform that provides single sign-on, multi-factor authentication, and user provisioning solutions.

Identity ResolutionPrivacy TechnologySan Francisco, California
OneSignal

OneSignal

Customer Engagement / Marketing Technology

OneSignal is a leading customer engagement platform that enables businesses to send targeted push notifications, in-app messages, email, and SMS. It helps developers and marketers engage their users across multiple channels to improve retention and drive growth for their applications and websites.

Marketing AutomationCustomer EngagementSan Mateo, California
OneTag

OneTag

Publisher Monetization & Header Bidding

Header bidding and yield optimization platform for publishers, offering wrapper solutions and programmatic monetization tools. Provides advanced header bidding technology to maximize publisher revenue.

Supply Side Platform (SSP)Paris, Île-de-France
OneTrust

OneTrust

Privacy Tech / Consent Management

OneTrust is a leading privacy, security, and data governance software platform that helps organizations manage compliance with global privacy regulations including GDPR, CCPA, and cookie consent.

Privacy & Consent ManagementPrivacy TechnologyAtlanta, Georgia
OneView

OneView

AdTech - Programmatic TV Advertising

OneView is a programmatic advertising technology platform specializing in converged TV advertising solutions that bridge traditional linear television and modern digital streaming environments. The company addresses the critical challenge of audience fragmentation across cable, satellite, over-the-air broadcast, and multiple streaming services by providing unified programmatic access to both legacy broadcast inventory and connected TV (CTV) placements through a single integrated platform. Thi...

CTV PlatformVerification & Measurement
Onfido

Onfido

Acquired

Identity Verification & Fraud Prevention

Identity verification and authentication platform using AI-powered document verification and biometric analysis to prevent fraud and ensure compliance.

Identity ResolutionVerification PlatformLondon, England