Company lists · Data refreshed September 2026

Top 25 Vendor consulting firms based in the United States

Name: Vendor consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,065 companies tracked

RevenueBase identified 3,065 vendor consulting firms headquartered in the United States as of September 2026 and tracks 19,143 professional contacts across them, including 5,351 with verified work emails. New York is the largest hub.

This list covers vendor consulting firms 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 21, 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 21, 2026 86% judged on-target in blind review

3,065Companies

19,143Contacts tracked

5,351Verified emails

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The 25 largest vendor consulting firms based in the United States

Ranked by team size

Top 25 of 3,065 vendor consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to vendor consulting firms: 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	W3global	Strong evidence	Frisco, TX, United StatesHQ checked Sep 21, 2026	501-1,000	1,149 contacts →
	Strong evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 21, 2026
2	Northern Lights Technology Development	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	501-1,000	368 contacts →
	Indirect evidence “At Northern Lights, we take pride in providing exceptional services using our dedicated team of employees, not contractors.” Source: RevenueBase Database · checked Sep 21, 2026
3	Assyst	Strong evidence	Sterling, VA, United StatesHQ checked Sep 21, 2026	51-200	284 contacts →
	Strong evidence “ASSYST is an agile, CMMC-certified, CMMI Maturity Level 3, and ISO 9001, ISO and ISO 27001-certified technology and consulting firm that helps government agencies modernize…” Source: RevenueBase Database · checked Sep 21, 2026
4	Bridge Partners	Strong evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	201-500	247 contacts →
	Strong evidence “Bridge Partners is a people-focused, customer-driven consulting firm that helps organizations transform to drive revenue growth, adapt to change, and create customer value.” Source: RevenueBase Database · checked Sep 21, 2026
5	Scottmadden, INC	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 21, 2026	201-500	244 contacts →
	Strong evidence “ScottMadden is a management consulting firm that does what it takes to get the job done right.” Source: RevenueBase Database · checked Sep 21, 2026
6	Mosaic Consulting Group	Strong evidence	Nashville, TN, United StatesHQ checked Sep 21, 2026	201-500	221 contacts →
	Strong evidence “Mosaic Consulting Group brings together deep expertise, proven best practices, and hands-on experience from hundreds of client engagements to help organizations transform how they…” Source: RevenueBase Database · checked Sep 21, 2026
7	Bryant Park Consulting	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	191 contacts →
	Indirect evidence “We champion a culture of innovation to help our clients build the future of business.” Source: RevenueBase Database · checked Sep 21, 2026
8	3s Business Corporation INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	185 contacts →
	Strong evidence “3S Business Corporation is a specialized Software & Consulting Services Provider based in Houston, TX, which helps clients plan, implement and maintain their technology…” Source: RevenueBase Database · checked Sep 21, 2026
9	Mamsys World	Strong evidence	Solon, OH, United StatesHQ checked Sep 21, 2026	201-500	176 contacts →
	Strong evidence “Mamsys is a global consulting & solutioning company that helps organizations grow revenue, improve operational efficiency, and strengthen their people capabilities-at scale and…” Source: RevenueBase Database · checked Sep 21, 2026
10	TBC	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 21, 2026	51-200	161 contacts →
	Indirect evidence “Since 1996, TBC has specialized in helping organizations leverage technology to boost performance.” Source: RevenueBase Database · checked Sep 21, 2026
11	ITAC	Strong evidence	New York, NY, United StatesHQ checked Sep 21, 2026	n/a	150 contacts →
	Strong evidence “ITAC is a leading consulting organization located in New York City.” Source: RevenueBase Database · checked Sep 21, 2026
12	Idea Entity	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 21, 2026	51-200	145 contacts →
	Indirect evidence “Idea Entity makes ideas real through the application of technology.” Source: RevenueBase Database · checked Sep 21, 2026
13	Blytheco	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	133 contacts →
	Indirect evidence “For over 45 years, Blytheco has been the transformation partner of choice for over companies nationwide.” Source: RevenueBase Database · checked Sep 21, 2026
14	Telesolv Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	132 contacts →
	Indirect evidence “To become a demand business, an organization must constantly improve the value created by its core business processes.” Source: RevenueBase Database · checked Sep 21, 2026
15	Adam Infotech	Indirect evidence	Madison, WI, United StatesHQ checked Sep 21, 2026	201-500	128 contacts →
	Indirect evidence “We are one of the fastest growing, privately-held business and technology firms in the U.S-growing organically at an annualized rate of over 100% since establishment in 2007.” Source: RevenueBase Database · checked Sep 21, 2026
16	Fulcrum Technology Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	124 contacts →
	Indirect evidence “The Fulcrum team of technologists are recognized experts in the fields of IT Infrastructure Technology, Security, Service Management and Support.” Source: RevenueBase Database · checked Sep 21, 2026
17	SVA Consulting	Strong evidence	Madison, WI, United StatesHQ checked Sep 21, 2026	51-200	122 contacts →
	Strong evidence “SVA Consulting Business leaders hire us to help them tackle complex challenges associated with business growth and transformation.” Source: RevenueBase Database · checked Sep 21, 2026
18	Pureintegration	Indirect evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	51-200	105 contacts →
	Indirect evidence “The epitome of ‘punching above our weight’, pureIntegration is the secret weapon you may never have heard of.” Source: RevenueBase Database · checked Sep 21, 2026
19	Supply Chain Resources Group, INC	Indirect evidence	Allen, TX, United StatesHQ checked Sep 21, 2026	201-500	104 contacts →
	Indirect evidence “SCRG helps product companies manage, improve and optimize the value of their key offshore supplier relationships.” Source: RevenueBase Database · checked Sep 21, 2026
20	CGN Global	Strong evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	201-500	104 contacts →
	Strong evidence “A Chicago-based firm with offices in Mexico, the UK, France, Turkey, India, and China, providing supply chain, digital, strategy and transformation consulting services to…” Source: RevenueBase Database · checked Sep 21, 2026
21	CFO Solutions	Indirect evidence	Amherst, MA, United StatesHQ checked Sep 21, 2026	51-200	98 contacts →
	Indirect evidence “CFO Solutions was founded by industry professionals with expertise as software developers, “Big 4” consultants, and Corporate Controller/CPAs.” Source: RevenueBase Database · checked Sep 21, 2026
22	Intuites	Strong evidence	Johns Creek, United StatesHQ checked Sep 21, 2026	51-200	97 contacts →
	Strong evidence “Intuites (IES) is a leading software development and consulting firm that is ready to meet every need of your company, firm or corporations.” Source: RevenueBase Database · checked Sep 21, 2026
23	Engage FI	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 21, 2026	51-200	94 contacts →
	Indirect evidence “Engage fi was founded on the principle of putting ourselves in our clients’ shoes to understand their needs, their business objectives, and their definition of success.” Source: RevenueBase Database · checked Sep 21, 2026
24	Ascendeum	Strong evidence	Bordentown, NJ, United StatesHQ checked Sep 21, 2026	51-200	94 contacts →
	Strong evidence “Ad Tech Strategy Consulting Ascendeum is your on-demand dream team.” Source: RevenueBase Database · checked Sep 21, 2026
25	Shields Facilities Maintenance, LLC	Indirect evidence	Blue Bell, PA, United StatesHQ checked Sep 21, 2026	51-200	89 contacts →
	Indirect evidence “Shields Facilities Management, LLC, is a national, world-class vendor management company boasting an extensive network of vendors, customized customer relationship management…” Source: RevenueBase Database · checked Sep 21, 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: vendor consulting firms. 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 vendor consulting firms.
Partial evidence: Its own public description names part of vendor consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vendor consulting firms. 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 3,065 vendor consulting firms based in the United States

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Vendor consulting firms based in the United States at a glance

As of Sep 21, 2026

28.0%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,257

11-50

605

51-200

156

201-500

501-1,000

1,001-5,000

5,001-10,000

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 3,065 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 vendor consulting firms, 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 “vendor consulting firms”. 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 vendor consulting firms), 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 vendor consulting firms, 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, 5,351 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.

Vendor consulting firms by metro

Vendor consulting firms in New York117
Vendor consulting firms in Houston63
Vendor consulting firms in Atlanta60
Vendor consulting firms in Chicago59
Vendor consulting firms in Austin52
Vendor consulting firms in Dallas48
Vendor consulting firms in Boston44
Vendor consulting firms in Denver40
Vendor consulting firms in Miami39
Vendor consulting firms in Los Angeles34
Vendor consulting firms in Washington34
Vendor consulting firms in San Diego32
Vendor consulting firms in Minneapolis31
Vendor consulting firms in San Francisco30
Vendor consulting firms in Charlotte29
Vendor consulting firms in Tampa29
Vendor consulting firms in Seattle28

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 vendor consulting firms, 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 vendor consulting firms are there based in the United States?

RevenueBase identified 3,065 vendor consulting firms 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?

W3global, headquartered in Frisco, tops this list with the largest team on record.

Which city has the most vendor consulting firms?

New York leads with 117 headquartered companies, followed by Houston (63) and Atlanta (60).

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 5,351 verified decision-maker contacts tracked across these 3,065 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.