Company lists · Data refreshed September 2026

Top 24 IT consulting services based in the United States

Name: IT consulting 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 4, 2026 29,783 companies tracked

RevenueBase identified 29,783 IT consulting services headquartered in the United States as of September 2026 and tracks 777,364 professional contacts across them, including 243,156 with verified work emails and 186,942 with mobile numbers. New York is the largest hub.

This list covers IT consulting 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 4, 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 4, 2026 86% judged on-target in blind review

29,783Companies

777,364Contacts tracked

243,156Verified emails

186,942Mobile numbers

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The 24 largest IT consulting services based in the United States

Ranked by team size

Top 24 of 29,783 IT consulting services based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to IT consulting 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 4, 2026	10001+	82,827 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 4, 2026
2	CDW	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 4, 2026	10001+	13,120 contacts →
	Indirect evidence “At CDW, we know how to make technology work so people can do great things.” Source: RevenueBase Database · checked Sep 4, 2026
3	Guidehouse	Indirect evidence	Mclean, SD, United StatesHQ checked Sep 4, 2026	10001+	12,933 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 4, 2026
4	Apex Systems	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	12,222 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 4, 2026
5	ICF	Indirect evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	5,001-10,000	9,492 contacts →
	Indirect evidence “ICF is a leading global solutions and technology provider.” Source: RevenueBase Database · checked Sep 4, 2026
6	World Wide Technology	Indirect evidence	Maryland Heights, AK, United StatesHQ checked Sep 4, 2026	10001+	9,138 contacts →
	Indirect evidence “We are thinkers and doers.” Source: RevenueBase Database · checked Sep 4, 2026
7	Comcast Business	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 4, 2026	10001+	8,346 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 4, 2026
8	Aricent	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 4, 2026	10001+	4,317 contacts →
	Indirect evidence “Aricent is now Altran, delivering industry innovations at future speed.” Source: RevenueBase Database · checked Sep 4, 2026
9	ETEAM	Indirect evidence	Somerset, CA, United StatesHQ checked Sep 4, 2026	n/a	3,271 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 4, 2026
10	Quest Software	Indirect evidence	Austin, TX, United StatesHQ checked Sep 4, 2026	1,001-5,000	3,211 contacts →
	Indirect evidence “At Quest Software, we help organizations build modern, trusted foundations for AI.” Source: RevenueBase Database · checked Sep 4, 2026
11	Visionet Systems INC	Indirect evidence	Cranbury, NJ, United StatesHQ checked Sep 4, 2026	10001+	3,113 contacts →
	Indirect evidence “Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.” Source: RevenueBase Database · checked Sep 4, 2026
12	Genpact Headstrong Capital Markets	Strong evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	10001+	3,102 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 4, 2026
13	AHEAD	Indirect evidence	Chicago, WI, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,990 contacts →
	Indirect evidence “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Source: RevenueBase Database · checked Sep 4, 2026
14	Compunnel INC	Indirect evidence	Princeton, United StatesHQ checked Sep 4, 2026	5,001-10,000	2,568 contacts →
	Indirect evidence “Compunnel serves as a global partner for talent, digital, and cybersecurity solutions, designed to help enterprises staff critical roles, modernize technology, and strengthen…” Source: RevenueBase Database · checked Sep 4, 2026
15	Oxford Global Resources	Indirect evidence	Beverly, VA, United StatesHQ checked Sep 4, 2026	501-1,000	2,561 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 4, 2026
16	People Tech Group INC	Indirect evidence	Redmond, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,409 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 4, 2026
17	Beyondsoft	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 4, 2026	501-1,000	2,358 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 4, 2026
18	CTG	Partial evidence	Amherst, NY, United StatesHQ checked Sep 4, 2026	5,001-10,000	2,259 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 4, 2026
19	OPTIV	Indirect evidence	Leawood, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,206 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 4, 2026
20	Jade Global	Partial evidence	San Jose, PA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,891 contacts →
	Partial evidence “Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.” Source: RevenueBase Database · checked Sep 4, 2026
21	NEW ERA Technology	Indirect evidence	West Chester, FL, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,842 contacts →
	Indirect evidence “New Era Technology is the AI, application, and infrastructure partner that simplifies, secures, and scales technology across modern work environments.” Source: RevenueBase Database · checked Sep 4, 2026
22	Tech Mahindra	Indirect evidence	Streetman, TX, United StatesHQ checked Sep 4, 2026	n/a	1,786 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 4, 2026
23	Eplus INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,783 contacts →
	Partial evidence “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Source: RevenueBase Database · checked Sep 4, 2026
24	Quadrant Technologies	Partial evidence	Redmond, NC, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,676 contacts →
	Partial evidence “Quadrant Technologies: Your Go-to IT Services Partner for a Digital Future For over a decade, Quadrant Technologies has established itself as a trailblazer in the IT services…” Source: RevenueBase Database · checked Sep 4, 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: IT consulting 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 IT consulting services.
Partial evidence: Its own public description names part of IT consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT consulting 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 24 of 29,783 IT consulting services based in the United States

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IT consulting services based in the United States at a glance

As of Sep 4, 2026

31.3%Verified-email coverage

24.0%Mobile-number coverage

26.1Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · New York

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

16,276

11-50

8,565

51-200

3,526

201-500

824

501-1,000

272

1,001-5,000

153

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

20,19531–60

131,30361–90

87,75990–180

3,899180+

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 IT consulting 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 “IT consulting 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 IT consulting 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 IT consulting 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, 243,156 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 4, 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.

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

RevenueBase identified 29,783 IT consulting 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 IT consulting services?

New York leads with 976 headquartered companies, followed by Houston (633) and Atlanta (521).

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 243,156 verified decision-maker contacts tracked across these 29,783 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 4, 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.