Company lists · Data refreshed September 2026

Top 25 Contextual advertising platforms worldwide

Name: Contextual advertising platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 5,529 companies tracked

RevenueBase identified 5,529 contextual advertising platforms worldwide as of September 2026 and tracks 104,811 professional contacts across them, including 38,655 with verified work emails and 17,919 with mobile numbers. The United States is the largest market and New York the largest hub.

This list covers contextual advertising platforms worldwide, 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 1, 2026. Country and city lists for contextual advertising platforms follow the table.

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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

5,529Companies

104,811Contacts tracked

38,655Verified emails

17,919Mobile numbers

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The 25 largest contextual advertising platforms worldwide

Ranked by team size

Top 25 of 5,529 contextual advertising platforms worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to contextual advertising platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	The Trade Desk	Indirect evidence	Boston, MA, US	1,001-5,000	4,241 contacts →
	Indirect evidence “It's more than just clicks.” Source: RevenueBase Database · checked Sep 1, 2026
2	Zeta Global	Indirect evidence	Nashville, TN, US	1,001-5,000	2,570 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 1, 2026
3	media.net	Strong evidence	Dubai, United Arab EmiratesHQ checked Sep 1, 2026	1,001-5,000	2,011 contacts →
	Strong evidence “Media.net is an independent advertising technology platform that helps publishers, advertisers, and agencies achieve measurable outcomes across all formats and mediums.” Source: RevenueBase Database · checked Sep 1, 2026
4	Taboola	Partial evidence	New York, NY, US	1,001-5,000	1,978 contacts →
	Partial 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 1, 2026
5	TEADS	Strong evidence	New York, NY, US	1,001-5,000	1,794 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 1, 2026
6	Stackadapt	Indirect evidence	Toronto, ON, CA	1,001-5,000	1,617 contacts →
	Indirect evidence “StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision.” Source: RevenueBase Database · checked Sep 1, 2026
7	Optimizely	Partial evidence	Gothenburg, SE	1,001-5,000	1,577 contacts →
	Partial evidence “Optimizely is the AI platform for marketing, built for the experience-makers who shape how brands show up in the world.” Source: RevenueBase Database · checked Sep 1, 2026
8	Inmobi Advertising	Strong evidence	New York, US	1,001-5,000	1,320 contacts →
	Strong evidence “InMobi Advertising is a leading global programmatic platform specializing in mobile-first solutions that drive customer growth.” Source: RevenueBase Database · checked Sep 1, 2026
9	Freewheel	Partial evidence	Hamburg, DE	1,001-5,000	1,302 contacts →
	Partial evidence “FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem.” Source: RevenueBase Database · checked Sep 1, 2026
10	Pubmatic	Partial evidence	Redwood City, CA, US	501-1,000	1,285 contacts →
	Partial evidence “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Source: RevenueBase Database · checked Sep 1, 2026
11	CJ	Indirect evidence	Santa Barbara, CA, US	501-1,000	1,209 contacts →
	Indirect evidence “From pioneering affiliate marketing to powering the future of connected commerce, CJ has been the trusted leader in partnership-based growth since 1998.” Source: RevenueBase Database · checked Sep 1, 2026
12	Quinstreet	Indirect evidence	Foster City, CA, US	501-1,000	1,025 contacts →
	Indirect evidence “Powering Performance Marketplaces In Digital Media QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers…” Source: RevenueBase Database · checked Sep 1, 2026
13	Ibotta	Partial evidence	Denver, CO, US	501-1,000	974 contacts →
	Partial evidence “Built in Denver, CO, Ibotta ("I bought a.")(NYSE: IBTA) is a performance marketing platform allowing brands to deliver digital promotions to over 200 million consumers through a…” Source: RevenueBase Database · checked Sep 1, 2026
14	BASIS	Partial evidence	Chicago, IL, US	501-1,000	886 contacts →
	Partial evidence “Basis is a global provider of media automation and programmatic advertising software and services for enterprises.” Source: RevenueBase Database · checked Sep 1, 2026
15	KARGO	Indirect evidence	Melbourne, AU	201-500	832 contacts →
	Indirect evidence “Kargo creates memorable experiences for advertisers that go beyond the first impression to captivate consumer attention.” Source: RevenueBase Database · checked Sep 1, 2026
16	Smartly	Partial evidence	Berlin, DE	501-1,000	827 contacts →
	Partial evidence “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Source: RevenueBase Database · checked Sep 1, 2026
17	Tradedoubler	Indirect evidence	Munich, DE	201-500	767 contacts →
	Indirect evidence “We empower a thriving partner network where everyone wins.” Source: RevenueBase Database · checked Sep 1, 2026
18	Seedtag	Strong evidence	London, GB	501-1,000	725 contacts →
	Strong evidence “Seedtag is the global leader in Neuro-Contextual advertising.” Source: RevenueBase Database · checked Sep 1, 2026
19	Equativ	Partial evidence	Paris, FR	501-1,000	698 contacts →
	Partial evidence “Equativ is a leading independent media platform that empowers advertisers and publishers to achieve real outcomes across the entire digital ecosystem.” Source: RevenueBase Database · checked Sep 1, 2026
20	simpli.fi	Indirect evidence	Fort Worth, TX, US	501-1,000	677 contacts →
	Indirect evidence “Simpli.fi provides marketing technologies, solutions, and workflow automation for advertisers and agencies of all sizes.” Source: RevenueBase Database · checked Sep 1, 2026
21	Nexxen	Strong evidence	New York, NY, US	501-1,000	666 contacts →
	Strong evidence “Nexxen is the advertising platform that delivers full-funnel performance powered by unique data and media.” Source: RevenueBase Database · checked Sep 1, 2026
22	Innovid	Partial evidence	Chicago, IL, US	501-1,000	640 contacts →
	Partial 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 1, 2026
23	Perion	Indirect evidence	New York, NY, US	501-1,000	613 contacts →
	Indirect evidence “Perion is helping agencies, brands and retailers get better results with their marketing investments by providing advanced technology across all major digital channels.” Source: RevenueBase Database · checked Sep 1, 2026
24	Natural Intelligence	Indirect evidence	Tel-Aviv, IL	501-1,000	575 contacts →
	Indirect evidence “Natural Intelligence (est.” Source: RevenueBase Database · checked Sep 1, 2026
25	MGID	Strong evidence	Los Angeles, CA, US	501-1,000	571 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 1, 2026

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: contextual 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 contextual advertising platforms.
Partial evidence: Its own public description names part of contextual advertising platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contextual 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 5,529 contextual advertising platforms worldwide

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Contextual advertising platforms worldwide at a glance

As of Sep 1, 2026

36.9%Verified-email coverage

17.1%Mobile-number coverage

19.0Average contacts per company

11-50Median size (employees)

4.3%Largest-city concentration · New York

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

2,544

11-50

2,096

51-200

613

201-500

152

501-1,000

1,001-5,000

5,001-10,000

10001+

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 contextual 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.
Coverage: 32 countries, largest first: the United States, India, the United Kingdom, Brazil, Israel, Canada, Germany, Spain, France, Singapore and 22 more. Country and city lists for contextual advertising platforms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “contextual 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 contextual 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 contextual advertising platforms, and records with no verified work email.
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, 38,655 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 between September 1, 2026 and 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.

Contextual advertising platforms by location

60 lists · largest first

Every Contextual advertising 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 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 contextual 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 contextual advertising platforms are there worldwide?

RevenueBase identified 5,529 contextual advertising platforms worldwide 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 Boston, tops this list with the largest team on record.

Which country has the most contextual advertising platforms?

The United States leads with 1,670 companies, followed by India (748) and the United Kingdom (359). Every contextual advertising platforms list by country and city is linked on this page.

Which city has the most contextual advertising platforms?

New York leads with 238 headquartered companies, followed by London (221) and Singapore (125).

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 38,655 verified decision-maker contacts tracked across these 5,529 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 1, 2026 and September 14, 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 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.