Company lists · Data refreshed September 2026

Top 25 Internet marketing platforms worldwide

RevenueBase identified 20,570 internet marketing platforms worldwide as of September 2026 and tracks 218,325 professional contacts across them, including 57,335 with verified work emails. The United States is the largest market and London the largest hub.

This list covers internet marketing 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 21, 2026. Country and city lists for internet marketing 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
20,570Companies
218,325Contacts tracked
57,335Verified emails
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The 25 largest internet marketing platforms worldwide

Ranked by team size
Top 25 of 20,570 internet marketing platforms worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to internet marketing 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceCambridge, MA, United StatesHQ checked Sep 21, 20265,001-10,00011,077 contacts →

Partial evidence

“HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceCedar Rapids, IA, United StatesHQ checked Sep 21, 20261,001-5,0004,426 contacts →

Partial evidence

“Hibu is a leading provider of technology-driven, integrated digital marketing solutions for America’s local businesses, trusted by tens of thousands of local business owners.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceVancouver, WA, United StatesHQ checked Sep 21, 20261,001-5,0004,029 contacts →

Partial evidence

“ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceBoise, ID, United StatesHQ checked Sep 21, 2026n/a3,516 contacts →

Indirect evidence

“We're Hiring!”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261,001-5,0002,825 contacts →

Indirect evidence

“2019 Thryv, Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,0002,595 contacts →

Partial evidence

“At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceBoston, MA, United StatesHQ checked Sep 21, 20261,001-5,0002,234 contacts →

Partial evidence

“Semrush, An Adobe Company, is the leading digital brand visibility platform, empowering marketers to command their online presence and create measurable impact.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceToronto, ON, CanadaHQ checked Sep 21, 20261,001-5,0001,633 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 21, 2026
9Indirect evidenceVancouver, BC, CanadaHQ checked Sep 21, 20261,001-5,0001,625 contacts →

Indirect evidence

“Too many brands suck at social.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceWaltham, MA, United StatesHQ checked Sep 21, 20261,001-5,0001,611 contacts →

Partial evidence

“We deliver for small businesses with powerful tools to simplify and amplify digital marketing.”

Source: RevenueBase Database · checked Sep 21, 2026
11Strong evidenceNew York, United StatesHQ checked Sep 21, 20261,001-5,0001,584 contacts →

Strong 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 21, 2026
12Indirect evidenceChicago, IL, United StatesHQ checked Sep 21, 20261,001-5,0001,539 contacts →

Indirect evidence

“Sprout Social is a global leader in social media management and analytics software.”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,0001,534 contacts →

Partial evidence

“Grow your business with digital marketing powered by AI and local expertise.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 21, 20261,001-5,0001,516 contacts →

Partial evidence

“AppsFlyer is the Modern Marketing Cloud that helps businesses transform complex data into clarity and growth.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceAtlanta, GA, United StatesHQ checked Sep 21, 20261,001-5,0001,483 contacts →

Partial evidence

“The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceReading, United KingdomHQ checked Sep 21, 2026501-1,0001,284 contacts →

Partial evidence

“Since 1966, we’ve been helping UK businesses grow – from printed ads in the Yellow Pages to powerful, AI-driven digital marketing that delivers real results.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceSanta Barbara, CA, United StatesHQ checked Sep 21, 2026501-1,0001,215 contacts →

Partial 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 21, 2026
18Partial evidenceChicago, IL, United StatesHQ checked Sep 21, 2026501-1,0001,178 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 21, 2026
19Partial evidenceKarachi, PakistanHQ checked Sep 21, 2026n/a1,135 contacts →

Partial evidence

“Learn How To Build and grow your E-COMMERCE Business On Leading Global E-Commerce Platforms.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceDraper, UT, United StatesHQ checked Sep 21, 2026501-1,0001,076 contacts →

Indirect evidence

“Scorpion is the leader in helping local businesses succeed by focusing on what truly matters-driving revenue.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 21, 20261,001-5,0001,063 contacts →

Indirect evidence

“Super-powered customer acquisition.”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,0001,050 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 21, 2026
23Partial evidenceIstanbul, TürkiyeHQ checked Sep 21, 20261,001-5,0001,036 contacts →

Partial evidence

“Insider-one platform for individualized, cross-channel experiences-enables enterprise marketers to connect customer data across channels and systems, predict their future behavior…”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceFoster City, CA, United StatesHQ checked Sep 21, 2026501-1,0001,035 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 21, 2026
25Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 21, 2026501-1,000893 contacts →

Partial 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 21, 2026

Showing 25 of 20,570 internet marketing platforms worldwide

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Internet marketing platforms worldwide at a glance

As of Sep 21, 2026
26.3%Verified-email coverage
10.6Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
13,290
11-50
5,411
51-200
1,231
201-500
349
501-1,000
114
1,001-5,000
73
5,001-10,000
15
10001+
52

Email recency is reported on each country list linked below.

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 internet marketing 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
Every country. Country and city lists for internet marketing platforms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “internet marketing 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 internet marketing 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 internet marketing 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, 57,335 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 21, 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.

Internet marketing platforms by location

88 lists · largest first

Every Internet marketing 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 internet marketing 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 internet marketing platforms are there worldwide?

RevenueBase identified 20,570 internet marketing 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?

Hubspot, headquartered in Cambridge, tops this list with the largest team on record.

Which country has the most internet marketing platforms?

The United States leads with 4,408 companies, followed by India (2,486) and the United Kingdom (938). Every internet marketing platforms list by country and city is linked on this page.

Which city has the most internet marketing platforms?

London leads with 356 headquartered companies, followed by New York (249) and New Delhi (202).

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 57,335 verified decision-maker contacts tracked across these 20,570 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 21, 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.