Company lists · Data refreshed September 2026
Top 25 Search advertising platforms based in the United States
RevenueBase identified 1,639 search advertising platforms headquartered in the United States as of September 2026 and tracks 24,187 professional contacts across them, including 9,876 with verified work emails. New York is the largest hub.
This list covers search advertising platforms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest search advertising platforms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,307 contacts → | ||||
Indirect evidence “It's more than just clicks.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,979 contacts → | ||||
Strong evidence “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,789 contacts → | ||||
Strong evidence “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,297 contacts → | ||||
Partial evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,050 contacts → | ||||
Partial evidence “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 568 contacts → | ||||
Strong evidence “MGID is a global advertising platform helping brands and publishers succeed on the open web with performance-driven, AI-powered native solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 383 contacts → | ||||
Partial evidence “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 302 contacts → | ||||
Partial evidence “System1 (NYSE: SST) operates several flagship brands across multiple consumer verticals, including shopping, travel and search, and a best-in-class customer acquisition and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 284 contacts → | ||||
Indirect evidence “Marin was acquired by Trilogy / ESW Capital in 2025.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 242 contacts → | ||||
Indirect evidence “AdMedia helps Agencies and Brands meet their KPIs and hit their ROI objectives.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 232 contacts → | ||||
Strong evidence “adMarketplace is the largest global marketplace for Native Search advertising.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 204 contacts → | ||||
Partial evidence “eLocal, part of HomeServe Plc, global leader in the home services industry, is a fast-growing and highly profitable national leader in pay-for-performance digital advertising.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 199 contacts → | ||||
Strong evidence “Townsquare Ignite is a customer-centric, data-driven technology provider of cross-platform advertising solutions including programmatic, search, marketing and client services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 183 contacts → | ||||
Partial evidence “AdCellerant is a digital marketing platform and growth partner that helps media companies and agencies simplify operations, scale campaigns, and drive measurable growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 142 contacts → | ||||
Partial evidence “Your time is yours again with our powerful digital advertising solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 139 contacts → | ||||
Indirect evidence “Sizmek by Amazon provides advertisers and agencies with solutions to create, distribute, measure, and optimize their messaging.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 131 contacts → | ||||
Partial evidence “Exponential Interactive delivers innovative advertising experiences that transform the way brands interact with audiences across desktop and mobile.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 128 contacts → | ||||
Indirect evidence “AI, Data & Revenue Technology for the Intelligent Enterprise C1X is a Silicon Valley-based AI, Data, and Revenue Technology company helping organizations transform data into…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 125 contacts → | ||||
Partial evidence “Clinch is an AI-powered advertising technology company that enables brands and agencies to deliver relevant advertising across all channels more efficiently and effectively.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 118 contacts → | ||||
Partial evidence “Fluency is the first and only Digital Advertising Operating System (OS) that transforms paid media operations by centralizing campaign execution into a single AI-powered…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 110 contacts → | ||||
Indirect evidence “ZEDO, Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 109 contacts → | ||||
Strong evidence “DanAds is the leading global SaaS company empowering businesses of all sizes with an intuitive, scalable, and automated self-service advertising platform that uses AI and machine…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 105 contacts → | ||||
Indirect evidence “Eulerity is the Agentic Marketing Operating System for multi-location brands.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 98 contacts → | ||||
Partial evidence “Ejam is a performance-based online advertising and marketing leader.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 98 contacts → | ||||
Strong evidence “A9.com, an Amazon company, solves some of the biggest challenges in search and advertising.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: search advertising platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names search advertising platforms.
- Partial evidence
- Its own public description names part of search advertising platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name search advertising platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,639 search advertising platforms based in the United States
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Search advertising platforms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,639 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among search advertising platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “search advertising platforms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names search advertising platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among search advertising platforms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 9,876 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Search advertising platforms by metro
- Search advertising platforms in New York108
- Search advertising platforms in Los Angeles47
- Search advertising platforms in Miami44
- Search advertising platforms in San Francisco43
- Search advertising platforms in Austin31
- Search advertising platforms in Chicago30
- Search advertising platforms in Dallas26
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names search advertising platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many search advertising platforms are there based in the United States?
RevenueBase identified 1,639 search advertising platforms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
The Trade Desk, headquartered in Ventura, tops this list with the largest team on record.
Which city has the most search advertising platforms?
New York leads with 108 headquartered companies, followed by Los Angeles (47) and Miami (44).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,876 verified decision-maker contacts tracked across these 1,639 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,639 search advertising platforms based in the United States. Start with a free account, no credit card.
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Search advertising platforms by geography
- Search advertising platforms based in Sydney, Australia
- Search advertising platforms based in Sao Paulo, Brazil
- Search advertising platforms based in Toronto, Canada
- Search advertising platforms based in Tallinn, Estonia
- Search advertising platforms based in Paris, France
- Search advertising platforms based in Berlin, Germany
- Search advertising platforms based in Bangalore, India
- Search advertising platforms based in Mumbai, India
- Search advertising platforms based in New Delhi, India
- Search advertising platforms based in Noida, India
- Search advertising platforms based in Tel Aviv, Israel
- Search advertising platforms based in Amsterdam, Netherlands
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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- Search advertising platforms based in Sydney, Australia
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