Company lists · Data refreshed September 2026

Top 25 SEO agency for B2B tech companies worldwide

RevenueBase identified 18,065 SEO agency for B2B tech companies worldwide as of September 2026 and tracks 101,566 professional contacts across them, including 16,195 with verified work emails. The United States is the largest market and London the largest hub.

This list covers SEO agency for B2B tech companies 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 SEO agency for B2B tech companies 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
18,065Companies
101,566Contacts tracked
16,195Verified emails
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The 25 largest SEO agency for B2B tech companies worldwide

Ranked by team size
Top 25 of 18,065 SEO agency for B2B tech companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to SEO agency for B2B tech companies: 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
1Indirect evidenceMelbourne, AustraliaHQ checked Sep 21, 2026n/a6,896 contacts →

Indirect evidence

“The way people search is changing.”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceCarlsbad, CA, United StatesHQ checked Sep 21, 2026n/a825 contacts →

Partial evidence

“Since its inception in 1997, SEO Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceAustin, TX, United StatesHQ checked Sep 21, 20261,001-5,000821 contacts →

Indirect evidence

“ZDPM is the coming together of Salesify and DemandShore.”

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500590 contacts →

Partial evidence

“Wildnet Technologies - Best Digital Marketing Agency | White Label Services for Growing Agencies | Results-Driven AI SEO Services We don't just run campaigns-we build growth…”

Source: RevenueBase Database · checked Sep 21, 2026
5Partial evidenceNaxxar, MaltaHQ checked Sep 21, 2026201-500463 contacts →

Partial evidence

“ClickOut Media is an remote first, industry leading, multichannel marketing company, delivering best in class SEO & content for esteemed clients all over the world.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceMiddletown, DE, United StatesHQ checked Sep 21, 2026201-500390 contacts →

Indirect evidence

“Do you want to see your business on heights?”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceLehi, UT, United StatesHQ checked Sep 21, 2026201-500326 contacts →

Partial evidence

“At Boostability, we're more than just an SEO company; we're your strategic partner in driving online growth.”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 21, 2026201-500320 contacts →

Partial evidence

“Coalition Technologies is one of the leading SEO & web design agencies in the United States.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceToronto, ON, CanadaHQ checked Sep 21, 202651-200233 contacts →

Indirect evidence

“If your business isn't generating consistent leads online, the problem usually is your digital presence.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceJerusalem, IsraelHQ checked Sep 21, 2026n/a230 contacts →

Partial evidence

“GROW is a full-service marketing agency passionate about helping B2B companies achieve their goals.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceKowloon, Hong KongHQ checked Sep 21, 2026201-500230 contacts →

Indirect evidence

“Established in 1996, AsiaPac Net Media Limited (AsiaPac) is a leading digital marketing agency that provides technology-driven digital marketing solutions to clients across the…”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceIrvine, CA, United StatesHQ checked Sep 21, 202651-200207 contacts →

Partial evidence

“Directive elevates the focus of B2B marketers from MQLs to qualified pipeline with a proven methodology that fuels the fastest growing B2B brands in the world.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceVienna, AustriaHQ checked Sep 21, 202651-200190 contacts →

Indirect evidence

“Seit der Gründung in 1919 hat sich Herold laufend weiterentwickelt und ist heute Teil der group.one, die zu einer der führenden Unternehmensgruppen in Europa im Bereich Domains…”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 202651-200183 contacts →

Partial evidence

“Incorporated in 2010, AuroIN LLC is a premier digital marketing agency based in World Trade Center, New York, specializing in AI-driven SEO strategies that deliver measurable ROI.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceFrisco, TX, United StatesHQ checked Sep 21, 202651-200151 contacts →

Partial evidence

“CloudMellow is a tech-driven, full-scale digital marketing agency with a proven track record in transforming businesses across the globe through thoughtful and innovative…”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceAustin, TX, United StatesHQ checked Sep 21, 202611-50149 contacts →

Indirect evidence

“GPO is everything search.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500144 contacts →

Partial evidence

“Demand Media specializes in a wide range of data driven B2B marketing services geared towards promoting SaaS offerings.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceMaringá, BrazilHQ checked Sep 21, 202651-200141 contacts →

Partial evidence

“Founded in 2016 in Spain, and currently operating in Brazil, liveSEO performs consistent and well-targeted work in SEO (search engine optimization), attracting companies looking…”

Source: RevenueBase Database · checked Sep 21, 2026
19Strong evidenceFrome, United KingdomHQ checked Sep 21, 202651-200138 contacts →

Strong evidence

“The B2B marketing agency built for complex tech sales.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceWestlake Village, CA, United StatesHQ checked Sep 21, 202651-200137 contacts →

Indirect evidence

“National Positions, The Digital Growth Agency, is a 360-degree digital marketing firm located in Southern California.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceJakarta Barat, IndonesiaHQ checked Sep 21, 202611-50134 contacts →

Indirect evidence

“At essentials the agency, we help brands take control of their digital presence and dominate their online space, not just exist in it.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidencePune, IndiaHQ checked Sep 21, 202611-50132 contacts →

Indirect evidence

“Cannibals Media is a top-rated digital marketing agency in India.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceAmherst, NY, United StatesHQ checked Sep 21, 202651-200128 contacts →

Indirect evidence

“Mainstreethost specializes in everything you need to have a successful online presence, including search engine optimization, paid search marketing, website design, social media…”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceKyiv, UkraineHQ checked Sep 21, 202651-200127 contacts →

Partial evidence

“Semalt is a results-driven, technology-inspired SEO company.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceMesa Geitonia, CyprusHQ checked Sep 21, 2026501-1,000126 contacts →

Indirect evidence

“FIX - профессиональная компания, оказывающая полный спектр услуг в области интернет-маркетинга: разработка web-ресурсов и web-приложений, поисковая оптимизация и продвижение…”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 18,065 SEO agency for B2B tech companies worldwide

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SEO agency for B2B tech companies worldwide at a glance

As of Sep 21, 2026
15.9%Verified-email coverage
5.6Average contacts per company
1-10Median size (employees)
2.1%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
12,992
11-50
4,183
51-200
640
201-500
122
501-1,000
28
1,001-5,000
13
5,001-10,000
5
10001+
17

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 SEO agency for B2B tech 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.
Coverage
Every country. Country and city lists for SEO agency for B2B tech companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “SEO agency for B2B tech 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 SEO agency for B2B tech 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 SEO agency for B2B tech companies, 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, 16,195 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.

SEO agency for B2B tech companies by location

75 lists · largest first

Every SEO agency for B2B tech companies 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 SEO agency for B2B tech 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 SEO agency for B2B tech companies are there worldwide?

RevenueBase identified 18,065 SEO agency for B2B tech companies 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?

SEO, headquartered in Melbourne, tops this list with the largest team on record.

Which country has the most SEO agency for B2B tech companies?

The United States leads with 3,988 companies, followed by India (1,952) and the United Kingdom (1,303). Every SEO agency for B2B tech companies list by country and city is linked on this page.

Which city has the most SEO agency for B2B tech companies?

London leads with 382 headquartered companies, followed by New Delhi (171) and New York (168).

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 16,195 verified decision-maker contacts tracked across these 18,065 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.