Top United States AdTech Companies (4,327)

RTB House is a global technology company specializing in innovative marketing solutions powered by deep learning algorithms. Founded in 2012, the company has rapidly grown into a leader in the field of personalized advertising, offering a full-funnel marketing platform that drives real results. Our proprietary technology enables brands to deliver highly relevant and precisely targeted ads to consumers, enhancing engagement...

We are an omnichannel customer acquisition platform with offices throughout the US, Canada and Europe. System1 builds desktop and mobile apps, search engines, and online publications that empower consumers with information while respecting their privacy. We also operate brands that include CouponFollow, Startpage and MapQuest. System1 is a champion of AI technology, investing in the first legal AI called Vinny...

AI is great at understanding what you're asking. It's terrible at giving you answers you can trust. Kepler built a platform that separates what AI does well from what code does well where AI handles the conversation, code handles the truth. The result is the first AI system that can show its work. Kepler automatically ingests scattered data, structures it into...

Expedia Group, Inc. is the global travel marketplace with one purpose: to help travelers explore the world, one journey at a time. Expedia Group™ connects travelers, partners, and advertisers through its trusted brands, leading technology, and rich first-party data, delivering predictive, personalized experiences that shape the future of travel. Expedia Group’s ecosystem includes three flagship consumer brands – Expedia®, Hotels.com®, and...

Rokt is the global leader in ecommerce, unlocking real-time relevance in the moment that matters most - The Transaction Moment. Rokt’s AI Brain and Ecommerce Network powers billions of transactions connecting hundreds of millions of customers, and is trusted to do this by the world’s leading companies including Live Nation, Macy’s, Fanatics, AMC Theatres, PayPal, Uber, Hulu, Staples, Albertsons and...

Liftoff is a leading AI-powered performance marketing platform for the mobile app economy. Our end-to-end technology stack helps app marketers acquire and retain high-value users, while enabling publishers to maximize revenue across programmatic and direct demand. Liftoff’s solutions, including Accelerate, Direct, Monetize, Intelligence, and Vungle Exchange, support over 6,600 mobile businesses across 74 countries in sectors such as gaming, social, finance,...

Basis is a leading global provider of automation software designed specifically for enterprise marketers. Our platform, Basis, is the industry’s only comprehensive digital media solution that seamlessly integrates programmatic, site-direct, advanced TV, search, and social media within a single interface. By unifying these functions, Basis simplifies complex and disconnected media operations, automates repetitive tasks, and minimizes manual processes, enabling marketing...

GumGum is The Mindset Company™ transforming advertising. We deliver results by matching brands with people in the right mindset, in the moments that matter. Powered by the Mindset Graph™, our AI-driven data engine processes billions of real-time contextual, creative, environmental, and historical signals to match every ad with the most receptive audience. The result is advertising that drives meaningful outcomes for...

Agentio has raised $56M to date at a $340M valuation, including a recent Series B led by Forerunner, which followed our Series A within a calendar year. Our investors also include Benchmark, Craft, and AlleyCorp. Agentio has been named to Forbes’ Next Billion Dollar Startups, 2025, and our platform is already used and loved by the world’s leading marketers and...

Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale. Taboola works with thousands of businesses who advertise directly on Realize, Taboola’s powerful ad platform, reaching approximately 600M daily active users across some of the best publishers in the world. Publishers like NBC News, Yahoo, and OEMs such as Samsung,...

DISQO is a leading provider of advertising intelligence, measuring brand and performance outcomes across every media channel to power data-driven marketing decisions. Trusted by 500+ of the world’s largest brands and 150+ agency and media partners, and recognized by Inc., Deloitte, Ad Age, Digiday, Forbes, and Cynopsis, DISQO is redefining the power of measurement in advertising.

Together, we power advertising that enables billions of people to stay informed, entertained, and connected. We introduce them to new ideas, products, and services that make their lives better. And we help media owners of all sizes realize their full potential. That’s a lot — that’s the power of advertising. But it’s only possible with great technology. And that’s where Magnite...

Fluent, Inc. (NASDAQ: FLNT) is a commerce media solutions provider connecting top-tier brands with highly engaged consumers. Leveraging diverse ad inventory, robust first-party data, and proprietary machine learning, Fluent unlocks additional revenue streams for partners and empowers advertisers to acquire their most valuable customers at scale. Founded in 2010, Fluent uses its deep expertise in performance marketing to drive monetization...

Our mission is to improve health outcomes through behavior change at the point of care and beyond. Every day, people make choices that shape their health, and at PatientPoint, we strive to support those decisions with the right information delivered at the right time. We're proud to power the largest network of digital devices in doctor's offices across the country —...

Centerfield supercharges commerce for more than 2,000 brands, including 25% of the Fortune 100. Powered by its proprietary platform, Dugout, Centerfield efficiently acquires customers at scale through AI-driven search and LLM discovery, its digital brands, and intelligent media and sales optimization. Centerfield operates across categories such as insurance, home services, business services, and eCommerce among many others. Headquartered in Los...

As a full-service agency, program operator, and SaaS technology platform, Share Local Media helps tech and e-commerce companies leverage direct mail to achieve efficient direct response outcomes with high quality branding.

At Edmunds, we make the car buying experience easier. By combining expert vehicle reviews and real-time consumer and automotive market insights with a suite of intuitive shopping tools, we empower millions of people to buy, sell, and price cars with total confidence. While we are an established leader in automotive tech, our company thrives on innovation and agility, pushing the...

Acquia is the open digital experience company. We provide the world's most ambitious brands with products built around Drupal to allow them to embrace innovation and create customer moments that matter. At Acquia, we believe in the power of community and collaboration — giving our customers and partners the freedom to build tomorrow on their terms.

People Inc. is America’s largest digital and print publisher. Our 40+ iconic and fast-growing brands harness the best intent-driven content, the fastest sites, and the fewest ads to help nearly 200 million people every month, including 95 percent of US women, make decisions, take action, and find inspiration. People Inc. brands include PEOPLE, Better Homes & Gardens, Verywell, FOOD &...

Zeta Global (NYSE: ZETA) is the AI Marketing Cloud that leverages advanced artificial intelligence (AI) and trillions of consumer signals to make it easier for marketers to acquire, grow, and retain customers more efficiently. Through the Zeta Marketing Platform (ZMP), our vision is to make sophisticated marketing simple by unifying identity, intelligence, and omnichannel activation into a single platform –...