Company lists · Data refreshed September 2026

Top 25 SEO agencies for B2B software based in the United States

Name: SEO agencies for B2B software based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,310 companies tracked

RevenueBase identified 4,310 SEO agencies for B2B software headquartered in the United States as of September 2026 and tracks 61,444 professional contacts across them, including 5,661 with verified work emails. New York is the largest hub.

This list covers SEO agencies for B2B software headquartered in the United States, 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 29, 2026.

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 29, 2026 86% judged on-target in blind review

4,310Companies

61,444Contacts tracked

5,661Verified emails

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The 25 largest SEO agencies for B2B software based in the United States

Ranked by team size

Top 25 of 4,310 SEO agencies for B2B software based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to SEO agencies for B2B software: 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	SEO INC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 29, 2026	n/a	825 contacts →
	Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 29, 2026
2	Wildnet Technologies	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	590 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 29, 2026
3	KPL Tech Solution Pvt. LTD	Indirect evidence	Middletown, DE, United StatesHQ checked Sep 29, 2026	201-500	390 contacts →
	Indirect evidence “Do you want to see your business on heights?” Source: RevenueBase Database · checked Sep 29, 2026
4	Localedge	Indirect evidence	Buffalo, NY, United StatesHQ checked Sep 29, 2026	501-1,000	383 contacts →
	Indirect evidence “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Source: RevenueBase Database · checked Sep 29, 2026
5	Boostability	Partial evidence	Lehi, UT, United StatesHQ checked Sep 29, 2026	201-500	326 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 29, 2026
6	Coalition Technologies	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	320 contacts →
	Partial evidence “Coalition Technologies is one of the leading SEO & web design agencies in the United States.” Source: RevenueBase Database · checked Sep 29, 2026
7	TSL Marketing	Partial evidence	Elkridge, MD, United StatesHQ checked Sep 29, 2026	201-500	253 contacts →
	Partial evidence “TSL Marketing provides lead generation, SEO, Website, Content, Channel Marketing and HubSpot agency services to MSPs, IT companies, IT Services firms, and SaaS firms.” Source: RevenueBase Database · checked Sep 29, 2026
8	auroin.com	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	183 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 29, 2026
9	Brandrep	Partial evidence	Irvine, CA, United StatesHQ checked Sep 29, 2026	51-200	152 contacts →
	Partial evidence “Local Marketing Company who specializes in helping small businesses with building and managing their online presence through Local SEO, Lead Generation, Local Directory submission…” Source: RevenueBase Database · checked Sep 29, 2026
10	Cloudmellow	Indirect evidence	Frisco, TX, United StatesHQ checked Sep 29, 2026	51-200	151 contacts →
	Indirect 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 29, 2026
11	Demand Media BPM LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	144 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 29, 2026
12	National Positions	Indirect evidence	Westlake Village, CA, United StatesHQ checked Sep 29, 2026	51-200	137 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 29, 2026
13	MOPRO	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 29, 2026	51-200	134 contacts →
	Indirect evidence “Mopro gives small businesses a website designed to convert, and the A.I-powered tools they need to claim a top spot in search results and win more customers.” Source: RevenueBase Database · checked Sep 29, 2026
14	Rapiddev	Indirect evidence	Boston, United StatesHQ checked Sep 29, 2026	51-200	124 contacts →
	Indirect evidence “We help companies turn AI strategy into measurable business outcomes.” Source: RevenueBase Database · checked Sep 29, 2026
15	SEOP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 29, 2026	51-200	121 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
16	Tripledart	Indirect evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	51-200	117 contacts →
	Indirect evidence “Your GTM engine, fully loaded.” Source: RevenueBase Database · checked Sep 29, 2026
17	Hennessey Digital	Partial evidence	North Hollywood, CA, United StatesHQ checked Sep 29, 2026	51-200	115 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
18	Seomoz	Strong evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	51-200	105 contacts →
	Strong evidence “SEOmoz is the world’s most popular provider of SEO software.” Source: RevenueBase Database · checked Sep 29, 2026
19	Camp Digital	Indirect evidence	Edina, MN, United StatesHQ checked Sep 29, 2026	51-200	103 contacts →
	Indirect evidence “CAMP Digital is a technology-first digital marketing agency built exclusively for home service companies.” Source: RevenueBase Database · checked Sep 29, 2026
20	The MX Group	Partial evidence	Burr Ridge, IL, United StatesHQ checked Sep 29, 2026	51-200	97 contacts →
	Partial evidence “MX is the 2nd largest independent, integrated B2B marketing agency in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026
21	Web20 Ranker	Partial evidence	Harrisburg, PA, United StatesHQ checked Sep 29, 2026	51-200	92 contacts →
	Partial evidence “Helping marketing agencies scale with our superior white label SEO service since 2015.” Source: RevenueBase Database · checked Sep 29, 2026
22	Seoprofy	Partial evidence	Orlando, FL, United StatesHQ checked Sep 29, 2026	51-200	89 contacts →
	Partial evidence “SeoProfy is your strategic SEO and AI visibility partner for organic and AI visibility that brings real ROI.” Source: RevenueBase Database · checked Sep 29, 2026
23	BKA Content	Partial evidence	North Ogden, UT, United StatesHQ checked Sep 29, 2026	11-50	79 contacts →
	Partial evidence “BKA Content is an industry-leading SEO services and digital marketing company.” Source: RevenueBase Database · checked Sep 29, 2026
24	Fuel Online Digital Marketing Agency - SEO Company	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	79 contacts →
	Indirect evidence “Fuel Online is the definitive global authority in Generative Engine Optimization (GEO) and high-performance search strategy.” Source: RevenueBase Database · checked Sep 29, 2026
25	Victorious	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	51-200	77 contacts →
	Indirect evidence “Victorious is a San Francisco search agency.” Source: RevenueBase Database · checked Sep 29, 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: SEO agencies for B2B software. 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 SEO agencies for B2B software.
Partial evidence: Its own public description names part of SEO agencies for B2B software, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name SEO agencies for B2B software. 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 4,310 SEO agencies for B2B software based in the United States

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SEO agencies for B2B software based in the United States at a glance

As of Sep 29, 2026

9.2%Verified-email coverage

14.3Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,086

11-50

1,014

51-200

159

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,310 companies.

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 agencies for B2B software, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “SEO agencies for B2B software”. 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 agencies for B2B software), 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 agencies for B2B software, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 5,661 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 29, 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 agencies for B2B software by metro

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 agencies for B2B software, 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 agencies for B2B software are there based in the United States?

RevenueBase identified 4,310 SEO agencies for B2B software headquartered in the United States 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 INC, headquartered in Carlsbad, tops this list with the largest team on record.

Which city has the most SEO agencies for B2B software?

New York leads with 179 headquartered companies, followed by Los Angeles (114) and Houston (90).

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 5,661 verified decision-maker contacts tracked across these 4,310 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 29, 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.