Company lists · Data refreshed November 2026

Top 25 Link building and SEO agencies worldwide

Name: Link building and SEO agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 20,215 companies tracked

RevenueBase identified 20,215 company matches for link building and SEO agencies worldwide as of November 2026 and tracks 134,952 professional contacts across them, including 14,109 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for link building and SEO agencies 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 November 5, 2026. Country and city lists for link building and SEO agencies 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 Nov 5, 2026 How this list was built

20,215Companies

134,952Contacts tracked

14,109Verified emails

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The 25 largest link building and SEO agencies worldwide

Ranked by team size

Top 25 of 20,215 company matches for link building and SEO agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	SEO INC	Exact match	Carlsbad, CA, United StatesHQ recorded Nov 5, 2026	n/a	838 contacts →
	Exact match “Since its inception in 1997, SEO Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	411 Locals	Exact match	Las Vegas, United StatesHQ recorded Nov 5, 2026	201-500	742 contacts →
	Exact match “About Us 411 Locals is an award-winning digital marketing agency dedicated to driving growth for US-based small and medium-sized businesses (SMBs).” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Wildnet Technologies	Exact match	New York, United StatesHQ recorded Nov 5, 2026	201-500	639 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Ebrandz LLP	Exact match	Mumbai, IndiaHQ recorded Nov 5, 2026	201-500	434 contacts →
	Exact match “Within a short span, eBrandz has seen enormous growth.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	KPL Tech Solution Pvt. LTD	Exact match	Middletown, DE, United StatesHQ recorded Nov 5, 2026	201-500	368 contacts →
	Exact match “Do you want to see your business on heights?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Stan Ventures	Exact match	Lake Bluff, United StatesHQ recorded Nov 5, 2026	201-500	352 contacts →
	Exact match “We run the link-building operation behind a lot of agencies you've probably heard of.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	First Page	Exact match	Melbourne, AustraliaHQ recorded Nov 5, 2026	201-500	348 contacts →
	Exact match “When it comes to Digital Marketing, it’s the First Page, or it’s nothing.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Coalition Technologies	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 5, 2026	201-500	332 contacts →
	Exact match “Coalition Technologies is one of the leading SEO & web design agencies in the United States.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Boostability	Exact match	Lehi, UT, United StatesHQ recorded Nov 5, 2026	201-500	327 contacts →
	Exact match “At Boostability, we're more than just an SEO company; we're your strategic partner in driving online growth.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Techwyse Internet Marketing	Exact match	Toronto, ON, CanadaHQ recorded Nov 5, 2026	51-200	259 contacts →
	Exact match “If your business isn't generating consistent leads online, the problem usually is your digital presence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Futur Digital	Exact match	Boulogne-billancourt, FranceHQ recorded Nov 5, 2026	201-500	172 contacts →
	Exact match “La façon dont vos clients vous cherchent a changé.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Website Depot Inc. Digital Marketing & SEO	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 5, 2026	n/a	165 contacts →
	Exact match “Websites Depot Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Webspero Solutions	Exact match	Mohali, IndiaHQ recorded Nov 5, 2026	51-200	161 contacts →
	Exact match “From a modest eight-member team in 2015 to a full-stack digital solutions agency with 100+ specialists today, we've helped businesses add over $2.4 billion in revenue globally.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	TACO	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	n/a	157 contacts →
	Exact match “Taco builds agentic workflows with search expertise to drive outsized growth outcomes for our customers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Gr0	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 5, 2026	51-200	156 contacts →
	Exact match “At GR0, we are in the business of helping businesses.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Liveseo	Exact match	Maringá, BrazilHQ recorded Nov 5, 2026	51-200	154 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	GPO	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	n/a	153 contacts →
	Exact match “GPO is everything search.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	SEOP	Exact match	Irvine, CA, United StatesHQ recorded Nov 5, 2026	51-200	145 contacts →
	Exact match “SEOP is one of the leaders in the Search Engine Optimization industry and was co-founded by SEO experts that thrive on a combination of in-depth expertise and creative, forward…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	SKS Tech Solution	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	51-200	144 contacts →
	Exact match “Welcome to SKS TECH SOLUTION, your number one shop for all things Digital Marketing Services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Semalt	Exact match	Kyiv, UkraineHQ recorded Nov 5, 2026	51-200	141 contacts →
	Exact match “Semalt is a results-driven, technology-inspired SEO company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Mainstreethost	Exact match	Amherst, OH, United StatesHQ recorded Nov 5, 2026	51-200	135 contacts →
	Exact match “Mainstreethost specializes in everything you need to have a successful online presence, including search engine optimization, paid search marketing, website design, social media…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Essentials The Agency	Exact match	Jakarta Barat, IndonesiaHQ recorded Nov 5, 2026	11-50	133 contacts →
	Exact match “At essentials the agency, we help brands take control of their digital presence and dominate their online space, not just exist in it.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	G-Rank	Exact match	Hyderabad, IndiaHQ recorded Nov 5, 2026	51-200	125 contacts →
	Exact match “G-Rank an ISO 9001:2008 certified company is established in the year 2010 and now it is a leading Digital Marketing Company that is authorized by Google.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Hennessey Digital	Exact match	North Hollywood, CA, United StatesHQ recorded Nov 5, 2026	51-200	122 contacts →
	Exact match “Named to Fortune’s 50 Best Workplaces in Advertising & Marketing, Hennessey Digital is an award-winning digital marketing agency specializing in SEO for lawyers and other online…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Activant Solutions PVT Ltd, Jaipur	Exact match	Jaipur, IndiaHQ recorded Nov 5, 2026	51-200	120 contacts →
	Exact match “With more than 15 years in business and a highly experienced and professional team of more than 100 team members; Activant Solutions Private Limited, founded in 2005 by the…” Recorded in the RevenueBase company graph · Nov 5, 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 “link building and SEO agencies”. 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 20,215 link building and SEO agencies worldwide

See the full list, filter by size, metro and specialty, and access 14,109 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Link building and SEO agencies worldwide at a glance

As of Nov 5, 2026

10.5%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

14,419

11-50

4,747

51-200

729

201-500

131

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 link building and SEO agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “link building and SEO agencies” 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 14,109 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 November 5, 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.

Link building and SEO agencies by location

92 lists · largest first

Every Link building and SEO agencies 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 “link building and SEO agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many link building and SEO agencies are there worldwide?

RevenueBase identified 20,215 company matches for link building and SEO agencies worldwide as of November 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?

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

Which country has the most link building and SEO agencies?

The United States leads with 4,181 companies, followed by India (2,704) and the United Kingdom (1,438). Every link building and SEO agencies list by country and city is linked on this page.

Which city has the most link building and SEO agencies?

London leads with 413 company records, followed by New Delhi (271) and Lahore (202).

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 14,109 professional contacts with verified work emails tracked across these 20,215 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 November 5, 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.