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Companies

4,156 companies in the AdTech ecosystem

GumGum

GumGum

Contextual Advertising & Brand Safety

GumGum is a contextual intelligence company that positions itself as "The Mindset Company," building technology to help advertisers and publishers connect with audiences based on real-time receptivity rather than identity-based targeting.

Contextual AdvertisingVerification & MeasurementSanta Monica, California
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Hakuhodo DY Media Partners

Merged

Media Buying & Planning

Hakuhodo DY Media Partners is an integrated media company formed by consolidating the media operations of three advertising agencies — Hakuhodo, Daiko, and YOMIKO — and operates as a subsidiary of Hakuhodo DY Holdings.

Marketing AgencyTokyo
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Hakuhodo DY ONE

Digital Marketing & Programmatic Advertising

Hakuhodo DY ONE is a Tokyo-based integrated digital marketing company that came into existence on April 1, 2024, when D.A.Consortium Inc. (DAC) and IREP Inc. were brought together under a single entity, serving as the digital core of the Hakuhodo DY Group.

Marketing AgencyPerformance MarketingTokyo
Impact

Impact

Partnership Management / Affiliate Marketing Technology

Impact is a partnership technology platform that helps brands build and scale affiliate, creator, and performance-driven marketing programs.

Influencer MarketingAttribution & AnalyticsSanta Barbara, California
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LiveRail

Defunct

Video Advertising / Programmatic Ad Tech

LiveRail was a video advertising technology platform focused on helping publishers maximize revenue while offering advertisers high-quality, targeted inventory, and it has since shut down as a standalone entity.

Supply Side Platform (SSP)Video Advertising PlatformSan Francisco, California
Sprinklr

Sprinklr

Customer Experience Management (CXM) / Social Media Management / MarTech

Sprinklr is an American software-as-a-service company specializing in customer experience management (CXM).

Influencer MarketingSocial Media ManagementNew York, New York
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Telaria

Rebranded

Ad Technology — Supply-Side Platform (SSP) / Video & CTV Monetization

Telaria, now operating as Magnite, was a fully programmatic, sell-side software platform specializing in premium video and connected TV/OTT monetization, formerly known as Tremor Video.

Connected TV PlatformSupply Side Platform (SSP)New York, New York
TripleLift

TripleLift

Acquired

Programmatic Advertising / Native Advertising

TripleLift operates under a majority investment from Vista Equity Partners, a global investment firm focused on enterprise software, data, and technology-enabled businesses, which partnered with the company to drive further innovation and accelerate global growth.

Contextual AdvertisingNative AdvertisingNew York, NY
UM (Universal McCann)

UM (Universal McCann)

Media Buying & Planning

UM operates as a borderless global media agency network across 100+ markets and 120+ offices, with more than 3,000 employees worldwide.

Attribution & AnalyticsMarketing AgencyNew York, NY
Vistar Media

Vistar Media

Acquired

Programmatic Advertising / Digital Out-of-Home (DOOH)

Vistar Media is a global ad tech company and the world's largest digital out-of-home (DOOH) advertising marketplace, offering technology designed to make buying and selling OOH media easier.

Digital Out-of-HomeProgrammatic PlatformNew York, New York
Vungle

Vungle

Rebranded

Mobile Advertising

Vungle, now operating as Liftoff following a 2021 merger, was a mobile advertising and monetization company that served primarily the supply side of the ecosystem, providing more than 100,000 mobile app developers and publishers with tools to monetize their apps, alongside an influencer marketing platform connecting brands with thousands of content creators.

Mobile Ad PlatformIn-Game AdvertisingSan Francisco, California
AdExchanger

AdExchanger

Trade Media / AdTech & MarTech Publishing

AdExchanger is an integrated media and events company that has covered programmatic advertising and the data-driven marketing technology ecosystem since 2008.

Marketing TechnologyNew York, New York
Awin

Awin

Co-owned

Affiliate & Partner Marketing

Awin is a marketing technology platform that provides an open marketplace enabling businesses to form a wide variety of acquisition partnerships.

Performance MarketingBerlin, Berlin
Datorama

Datorama

Rebranded

Marketing Analytics & Intelligence

Datorama was a data analytics tool built with digital marketers and marketing agencies in mind, acquired by Salesforce in 2018 and now operating as Marketing Cloud Intelligence.

Data & AnalyticsMarketing AnalyticsTel Aviv, New York
Initiative

Initiative

Media Planning & Buying

Initiative is an American media planning and buying agency that operates as part of IPG Mediabrands, the media division of the multinational holding company Interpublic Group of Companies.

Attribution & AnalyticsMarketing AgencyNew York, New York
Interpublic Group

Interpublic Group

Merged

Advertising & Marketing Services

Interpublic Group (IPG) was an American advertising and marketing services company headquartered in New York City, which was acquired by and folded into Omnicom Group in 2025.

Marketing AnalyticsMarketing AgencyNew York, New York
Meltwater

Meltwater

Media Intelligence & Social Analytics

Meltwater is an online media, social, and consumer intelligence company founded in Oslo, Norway, and headquartered in San Francisco, California.

Data & AnalyticsInfluencer MarketingSan Francisco, California
Merkle

Merkle

Acquired

Data-Driven Marketing Services & Technology

Merkle is a business, technology, and marketing services consultancy founded in data science and digital business performance, operating as part of the Dentsu network.

Attribution & AnalyticsMarketing AgencyColumbia, Maryland
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Paramount+

Streaming Media & Connected TV Advertising

Paramount+ is a streaming service owned by Paramount, a Skydance Corporation, offering a broad content library drawn from brands including BET, CBS, CBS Sports, CMT, Comedy Central, MTV, Nickelodeon, Paramount Pictures, and Showtime.

CTV PlatformConnected TV PlatformNew York, New York
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Peacock Ads

Streaming TV Advertising / Connected TV (CTV)

Peacock Ads sells video ads on the ad-supported tiers of NBCUniversal's Peacock streaming service, along with formats that don't interrupt playback, such as pause ads, and shoppable ads.

CTV PlatformConnected TV Platform
Quotient Technology

Quotient Technology

Rebranded

Retail Media & Digital Promotions

Quotient Technology, now operating as Neptune Retail Solutions, was an advertising technology company that specialized in digital promotions, retail media, digital out-of-home advertising, social influencer marketing, display advertising, and data and analytics.

Data & AnalyticsMarketing AnalyticsMountain View, California
R/GA

R/GA

Acquired

Digital Marketing & Innovation Consultancy

R/GA is a New York City-based advertising and creative technology company with teams operating across ten countries, which became an independent, privately held agency in 2025 after more than two decades under Interpublic Group, with private equity firm Truelink Capital as its new owner.

Marketing TechnologyMarketing AgencyNew York, New York
SendGrid

SendGrid

Acquired

Email Delivery & Marketing Technology

SendGrid is a cloud-based email marketing and transactional email platform, now operating as part of Twilio, that helps businesses and developers send, receive, and manage emails at scale.

Email MarketingMarketing AutomationDenver, Colorado
Sharethrough

Sharethrough

Rebranded

Programmatic Advertising / Native Ad Exchange

Sharethrough, now operating as Equativ following a merger announced in June 2024, was one of the top independent omnichannel ad exchanges.

Native AdvertisingConnected TV PlatformNew York, New York