Company lists · Data refreshed September 2026
Top 25 Ad tech software companies based in the United States
RevenueBase identified 2,044 ad tech software companies headquartered in the United States as of September 2026 and tracks 65,818 professional contacts across them, including 29,399 with verified work emails. New York is the largest hub.
This list covers ad tech software companies 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 14, 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 ad tech software companies 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 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,595 contacts → | ||||
Indirect evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,979 contacts → | ||||
Indirect 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 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,789 contacts → | ||||
Indirect 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 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,318 contacts → | ||||
Partial evidence “DoubleVerify is a leading software platform for digital media measurement and analytics.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,297 contacts → | ||||
Strong evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,273 contacts → | ||||
Indirect evidence “FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,178 contacts → | ||||
Partial evidence “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,050 contacts → | ||||
Indirect 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 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 966 contacts → | ||||
Partial evidence “Integral Ad Science is a leading global media measurement and optimization platform that delivers the industry’s most actionable data to drive superior results for the world’s…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 893 contacts → | ||||
Indirect evidence “Moloco’s mission is to be the scaling engine for the internet economy, applying AI to help businesses of all sizes grow.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 891 contacts → | ||||
Partial evidence “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 843 contacts → | ||||
Indirect evidence “Kargo creates memorable experiences for advertisers that go beyond the first impression to captivate consumer attention.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 733 contacts → | ||||
Indirect evidence “AppLovin helps businesses of any size reach over a billion people who play mobile games every day.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 707 contacts → | ||||
Partial evidence “MNTN builds advertising software for brands to drive measurable conversions, revenue, site visits and more through the power of television.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 702 contacts → | ||||
Indirect evidence “Channel Factory is a global technology and data platform that maximizes both performance efficiency and contextual suitability, delivering contextual performance for advertisers…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 680 contacts → | ||||
Indirect evidence “Simpli.fi is a real-world media platform that connects digital intent with physical movement, helping brands reach audiences in the right place, at the right moment, to drive…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 673 contacts → | ||||
Indirect evidence “Nexxen is the advertising platform that delivers full-funnel performance powered by unique data and media.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 640 contacts → | ||||
Strong evidence “Innovid is the leading independent ad tech platform, empowering marketers to create, deliver, measure, and optimize ad-supported experiences that people love.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 575 contacts → | ||||
Partial evidence “VideoAmp is a software and data company creating a more sophisticated data-driven advertising ecosystem that redefines how media is valued, bought and sold.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 568 contacts → | ||||
Indirect 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 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 532 contacts → | ||||
Partial evidence “With $8.5B in digital ad revenue and $40B in global TV ad revenue flowing through the systems, Operative plays a crucial role in helping the world’s top media companies and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 525 contacts → | ||||
Strong evidence “Raptive provides higher revenue through superior ad tech, expert strategy, and best-in-class support.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 491 contacts → | ||||
Partial evidence “Quantcast is the AI-powered ad platform built for performance marketers.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 459 contacts → | ||||
Indirect evidence “Branch is on a mission: to power impactful experiences in the connected world.” Source: RevenueBase Database · checked Sep 14, 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: ad tech software companies. 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 ad tech software companies.
- Partial evidence
- Its own public description names part of ad tech software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ad tech software companies. 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 2,044 ad tech software companies based in the United States
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Ad tech software companies based in the United States at a glance
As of Sep 14, 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 2,044 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 ad tech software companies, 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 “ad tech software companies”. 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 ad tech software companies), 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 ad tech software companies, 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, 29,399 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 14, 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.
Ad tech software companies by metro
- Ad tech software companies in New York343
- Ad tech software companies in San Francisco105
- Ad tech software companies in Los Angeles86
- Ad tech software companies in Miami73
- Ad tech software companies in Chicago41
- Ad tech software companies in Denver40
- Ad tech software companies in Austin39
- Ad tech software companies in Sheridan38
- Ad tech software companies in Las Vegas27
- Ad tech software companies in Wilmington27
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 ad tech software companies, 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 ad tech software companies are there based in the United States?
RevenueBase identified 2,044 ad tech software companies 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 ad tech software companies?
New York leads with 343 headquartered companies, followed by San Francisco (105) and Los Angeles (86).
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 29,399 verified decision-maker contacts tracked across these 2,044 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 14, 2026.
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Ad tech software companies by geography
- Ad tech software companies based in the United Kingdom
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- Ad tech software companies based in France
- Ad tech software companies based in Spain
- Ad tech software companies based in the Netherlands
- Ad tech software companies based in Poland
- Ad tech software companies based in Australia
- Ad tech software companies based in Italy
- Ad tech software companies based in Ukraine
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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