Company lists · Data refreshed September 2026

Top 25 Consulting IT services based in the United States

Name: Consulting IT services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 34,678 companies tracked

RevenueBase identified 34,678 consulting IT services headquartered in the United States as of September 2026 and tracks 829,959 professional contacts across them, including 249,981 with verified work emails and 210,330 with mobile numbers. New York is the largest hub.

This list covers consulting IT services 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 24, 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 24, 2026 86% judged on-target in blind review

34,678Companies

829,959Contacts tracked

249,981Verified emails

210,330Mobile numbers

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The 25 largest consulting IT services based in the United States

Ranked by team size

Top 25 of 34,678 consulting IT services based in the United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to consulting IT services: 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	DXC Technology	Partial evidence	Ashburn, VA, United StatesHQ checked Sep 24, 2026	10001+	82,768 contacts →
	Partial evidence “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Source: RevenueBase Database · checked Sep 24, 2026
2	Virtusa	Indirect evidence	Southborough, MA, United StatesHQ checked Sep 24, 2026	10001+	29,613 contacts →
	Indirect evidence “Virtusa is a global product and platform engineering services company that makes experiences better with technology.” Source: RevenueBase Database · checked Sep 24, 2026
3	NTT Data North America	Indirect evidence	Plano, TX, United StatesHQ checked Sep 24, 2026	10001+	22,390 contacts →
	Indirect evidence “NTT DATA, Inc.” Source: RevenueBase Database · checked Sep 24, 2026
4	CDW	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 24, 2026	10001+	13,155 contacts →
	Indirect evidence “At CDW, we know how to make technology work so people can do great things.” Source: RevenueBase Database · checked Sep 24, 2026
5	Guidehouse	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 24, 2026	10001+	12,815 contacts →
	Indirect evidence “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: RevenueBase Database · checked Sep 24, 2026
6	Apex Systems	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 24, 2026	1,001-5,000	12,231 contacts →
	Indirect evidence “Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Source: RevenueBase Database · checked Sep 24, 2026
7	Mantech	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 24, 2026	5,001-10,000	9,697 contacts →
	Indirect evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 24, 2026
8	World Wide Technology	Indirect evidence	Maryland Heights, MO, United StatesHQ checked Sep 24, 2026	10001+	9,184 contacts →
	Indirect evidence “We are thinkers and doers.” Source: RevenueBase Database · checked Sep 24, 2026
9	Protiviti	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 24, 2026	5,001-10,000	8,779 contacts →
	Partial evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: RevenueBase Database · checked Sep 24, 2026
10	Comcast Business	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 24, 2026	10001+	8,242 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
11	Yash Technologies	Partial evidence	East Moline, IL, United StatesHQ checked Sep 24, 2026	5,001-10,000	7,769 contacts →
	Partial evidence “YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…” Source: RevenueBase Database · checked Sep 24, 2026
12	Compucom	Indirect evidence	Fort Mill, SC, United StatesHQ checked Sep 24, 2026	5,001-10,000	7,753 contacts →
	Indirect evidence “Unleash Your Digital Workplace Potential with Compucom To be at the forefront of your industry, having the right technology is non-negotiable.” Source: RevenueBase Database · checked Sep 24, 2026
13	SHI International Corp	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 24, 2026	5,001-10,000	6,734 contacts →
	Indirect evidence “Think of SHI as your personal technology concierge.” Source: RevenueBase Database · checked Sep 24, 2026
14	Aricent	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 24, 2026	10001+	4,302 contacts →
	Indirect evidence “Aricent is now Altran, delivering industry innovations at future speed.” Source: RevenueBase Database · checked Sep 24, 2026
15	Presidio	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,798 contacts →
	Indirect evidence “At Presidio, speed and quality meet technology and innovation.” Source: RevenueBase Database · checked Sep 24, 2026
16	Black BOX	Indirect evidence	Plano, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,667 contacts →
	Indirect evidence “Black Box is a global leader in digital infrastructure solutions, delivering network and system integration, managed services, and technology products to Fortune 100 and top…” Source: RevenueBase Database · checked Sep 24, 2026
17	ETEAM	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 24, 2026	n/a	3,285 contacts →
	Indirect evidence “For over 25 years, eTeam has been trusted by global organizations to lead high-stakes programs where execution matters as much as strategy.” Source: RevenueBase Database · checked Sep 24, 2026
18	Visionet Systems INC	Indirect evidence	Cranbury, NJ, United StatesHQ checked Sep 24, 2026	10001+	3,119 contacts →
	Indirect evidence “Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.” Source: RevenueBase Database · checked Sep 24, 2026
19	Genpact Headstrong Capital Markets	Strong evidence	Reston, VA, United StatesHQ checked Sep 24, 2026	10001+	3,109 contacts →
	Strong evidence “Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.” Source: RevenueBase Database · checked Sep 24, 2026
20	VEE Technologies	Partial evidence	Decatur, GA, United StatesHQ checked Sep 24, 2026	5,001-10,000	2,933 contacts →
	Partial evidence “Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.” Source: RevenueBase Database · checked Sep 24, 2026
21	Speridian Technologies	Partial evidence	Albuquerque, NM, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,619 contacts →
	Partial evidence “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Source: RevenueBase Database · checked Sep 24, 2026
22	Oxford Global Resources	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 24, 2026	501-1,000	2,564 contacts →
	Indirect evidence “Oxford Global Resources delivers tailored solutions for any technical challenges you are facing using our partnership-first approach.” Source: RevenueBase Database · checked Sep 24, 2026
23	People Tech Group INC	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,434 contacts →
	Indirect evidence “People Tech Group is a leading Enterprise Solutions, Digital Transformation, Data Intelligence, and Modern Operation services provider.” Source: RevenueBase Database · checked Sep 24, 2026
24	Beyondsoft	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 24, 2026	501-1,000	2,359 contacts →
	Strong evidence “Beyondsoft Consulting is a leading global mid-sized business IT and consulting company that combines modern technologies and proven methodologies to tailor solutions that move…” Source: RevenueBase Database · checked Sep 24, 2026
25	CTG	Partial evidence	Amherst, NY, United StatesHQ checked Sep 24, 2026	5,001-10,000	2,264 contacts →
	Partial evidence “CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.” Source: RevenueBase Database · checked Sep 24, 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: consulting IT services. 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 consulting IT services.
Partial evidence: Its own public description names part of consulting IT services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name consulting IT services. 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 34,678 consulting IT services based in the United States

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Consulting IT services based in the United States at a glance

As of Sep 24, 2026

30.1%Verified-email coverage

25.3%Mobile-number coverage

23.9Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · New York

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

19,590

11-50

9,809

51-200

3,779

201-500

890

501-1,000

308

1,001-5,000

167

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 27.0d

184,7450–30

56,68631–60

3,76461–90

18790–180

4,599180+

Company record updated

Median 87.0d

00–30

155,08731–60

374,05561–90

257,92090–180

42,897180+

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 consulting IT services, 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 “consulting IT services”. 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 consulting IT services), 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 consulting IT services, 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, 249,981 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 24, 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.

Consulting IT services 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 consulting IT services, 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 consulting IT services are there based in the United States?

RevenueBase identified 34,678 consulting IT services 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?

DXC Technology, headquartered in Ashburn, tops this list with the largest team on record.

Which city has the most consulting IT services?

New York leads with 1038 headquartered companies, followed by Houston (724) and Atlanta (552).

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 249,981 verified decision-maker contacts tracked across these 34,678 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 24, 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.