Company lists · Data refreshed October 2026

Top 25 Ad tech platforms worldwide

Name: Ad tech platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 10,901 companies tracked

RevenueBase identified 10,901 company matches for ad tech platforms worldwide as of October 2026 and tracks 195,491 professional contacts across them, including 67,654 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for ad tech platforms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026. Country and city lists for ad tech platforms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

10,901Companies

195,491Contacts tracked

67,654Verified emails

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The 25 largest ad tech platforms worldwide

Ranked by team size

Top 25 of 10,901 company matches for ad tech platforms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Epsilon	Exact match	Irving, TX, United StatesHQ recorded Oct 1, 2026	5,001-10,000	9,953 contacts →
	Exact match “Epsilon is a global leader in data and identity with deep expertise in digital media, clean rooms, customer data platforms, loyalty and marketing services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Publicis Media	Exact match	London, United KingdomHQ recorded Oct 1, 2026	10001+	6,901 contacts →
	Exact match “Publicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	The Trade Desk	Exact match	Ventura, CA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	4,307 contacts →
	Exact match “It's more than just clicks.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Zeta Global	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,595 contacts →
	Exact match “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	media.net	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 1, 2026	1,001-5,000	2,011 contacts →
	Exact match “Media.net is an independent advertising technology platform that helps publishers, advertisers, and agencies achieve measurable outcomes across all formats and mediums.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Taboola	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,979 contacts →
	Exact match “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	TEADS	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,789 contacts →
	Exact match “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Stackadapt	Exact match	Toronto, ON, CanadaHQ recorded Oct 1, 2026	1,001-5,000	1,633 contacts →
	Exact match “StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	RTB House	Exact match	Warsaw, PolandHQ recorded Oct 1, 2026	1,001-5,000	1,353 contacts →
	Exact match “RTB House is a next-generation performance demand-side platform (DSP) that uses proprietary Deep Learning AI algorithms to help brands grow.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Doubleverify	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	501-1,000	1,318 contacts →
	Exact match “DoubleVerify is a leading software platform for digital media measurement and analytics.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Pubmatic	Exact match	Redwood City, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	1,297 contacts →
	Exact match “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Freewheel	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,273 contacts →
	Exact match “FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	CJ	Exact match	Santa Barbara, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	1,215 contacts →
	Exact match “From pioneering affiliate marketing to powering the future of connected commerce, CJ has been the trusted leader in partnership-based growth since 1998.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Centro	Exact match	Chicago, IL, United StatesHQ recorded Oct 1, 2026	501-1,000	1,178 contacts →
	Exact match “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Mediaocean	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,050 contacts →
	Exact match “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Integral AD Science	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	501-1,000	966 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	XR Extreme Reach	Exact match	Hudson Yards, NY, United StatesHQ recorded Oct 1, 2026	1,001-5,000	940 contacts →
	Exact match “XR Extreme Reach is the leading platform for managing advertising operations.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Magnite	Exact match	United StatesHQ recorded Oct 1, 2026	501-1,000	910 contacts →
	Exact match “We’re Magnite (NASDAQ: MGNI), the world’s largest independent sell-side advertising company.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Moloco	Exact match	Menlo Park, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	893 contacts →
	Exact match “Moloco’s mission is to be the scaling engine for the internet economy, applying AI to help businesses of all sizes grow.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	BASIS	Exact match	Chicago, IL, United StatesHQ recorded Oct 1, 2026	501-1,000	891 contacts →
	Exact match “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Adform	Exact match	Copenhagen, DenmarkHQ recorded Oct 1, 2026	501-1,000	847 contacts →
	Exact match “Adform is the most powerful and safe media buying platform in the world.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	KARGO	Exact match	New York, NY, United StatesHQ recorded Oct 1, 2026	201-500	843 contacts →
	Exact match “Kargo creates memorable experiences for advertisers that go beyond the first impression to captivate consumer attention.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Smartly	Exact match	Helsinki, FinlandHQ recorded Oct 1, 2026	501-1,000	827 contacts →
	Exact match “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Azerion	Exact match	Schiphol-rijk, GermanyHQ recorded Oct 1, 2026	1,001-5,000	808 contacts →
	Exact match “Founded in 2014, Azerion (EURONEXT: AZRN) is one of Europe’s largest digital advertising and entertainment media platforms.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Tradedoubler	Exact match	Stockholm, SwedenHQ recorded Oct 1, 2026	201-500	770 contacts →
	Exact match “We empower a thriving partner network where everyone wins.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “ad tech platforms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 10,901 ad tech platforms worldwide

See the full list, filter by size, metro and specialty, and access 67,654 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ad tech platforms worldwide at a glance

As of Oct 1, 2026

34.6%Verified-email coverage

17.9Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · New York

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

4,782

11-50

4,342

51-200

1,280

201-500

320

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for ad tech platforms are linked below.
What qualifies: Company records worldwide whose business descriptions match “ad tech platforms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 67,654 professional contacts with verified work emails across the full matched dataset. 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 October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Ad tech platforms by location

85 lists · largest first

Every Ad tech platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ad tech platforms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ad tech platforms are there worldwide?

RevenueBase identified 10,901 company matches for ad tech platforms worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Epsilon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ad tech platforms?

The United States leads with 2,402 companies, followed by India (1,024) and the United Kingdom (494). Every ad tech platforms list by country and city is linked on this page.

Which city has the most ad tech platforms?

New York leads with 448 company records, followed by London (345) and Singapore (209).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 67,654 professional contacts with verified work emails tracked across these 10,901 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 2026.

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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 SmartSearch, 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.