Company lists · Data refreshed September 2026

Top 24 IT service management consulting firms based in the United States

Name: IT service management 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 4, 2026 19,824 companies tracked

RevenueBase identified 19,824 IT service management consulting firms headquartered in the United States as of September 2026 and tracks 494,318 professional contacts across them, including 157,181 with verified work emails and 118,237 with mobile numbers. New York is the largest hub.

This list covers IT service management 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, how directly it supports the match, 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 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

19,824Companies

494,318Contacts tracked

157,181Verified emails

118,237Mobile numbers

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The 24 largest IT service management consulting firms based in the United States

Ranked by team size

Top 24 of 19,824 IT service management consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT service management consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Insight GlobalPartial evidence	Atlanta, CT, United StatesHQ checked Sep 4, 2026	n/a	15,381
	“Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: company website · checked Sep 4, 2026
2	CDWIndirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 4, 2026	10001+	13,120
	“At CDW, we know how to make technology work so people can do great things.” Source: company website · checked Sep 4, 2026
3	GuidehouseIndirect evidence	Mclean, SD, United StatesHQ checked Sep 4, 2026	10001+	12,933
	“Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: company website · checked Sep 4, 2026
4	Infinite Computer SolutionsIndirect evidence	Rockville, MD, United StatesHQ checked Sep 4, 2026	10001+	12,923
	“Infinite is a.” Source: company website · checked Sep 4, 2026
5	Apex SystemsIndirect evidence	Glen Allen, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	12,222
	“Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Source: company website · checked Sep 4, 2026
6	MovateIndirect evidence	Plano, TX, United StatesHQ checked Sep 4, 2026	10001+	12,175
	“Movate is a digital technology and customer experience services company committed to disrupting the industry with boundless agility, human-centered innovation, and relentless…” Source: company website · checked Sep 4, 2026
7	SlalomPartial evidence	Seattle, CA, United StatesHQ checked Sep 4, 2026	10001+	9,963
	“Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Source: company website · checked Sep 4, 2026
8	ETEAMIndirect evidence	Somerset, CA, United StatesHQ checked Sep 4, 2026	n/a	3,271
	“For over 25 years, eTeam has been trusted by global organizations to lead high-stakes programs where execution matters as much as strategy.” Source: company website · checked Sep 4, 2026
9	Visionet Systems INCIndirect evidence	Cranbury, NJ, United StatesHQ checked Sep 4, 2026	10001+	3,113
	“Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.” Source: company website · checked Sep 4, 2026
10	Genpact Headstrong Capital MarketsStrong evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	10001+	3,102
	“Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.” Source: company website · checked Sep 4, 2026
11	ArmaninoPartial evidence	San Ramon, MO, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,952
	“Founded as an alternative to the status quo, Armanino doesn’t just keep up with change, we embrace it.” Source: company website · checked Sep 4, 2026
12	Oxford Global ResourcesIndirect evidence	Beverly, VA, United StatesHQ checked Sep 4, 2026	501-1,000	2,561
	“Oxford Global Resources delivers tailored solutions for any technical challenges you are facing using our partnership-first approach.” Source: company website · checked Sep 4, 2026
13	BeyondsoftStrong evidence	Bellevue, WA, United StatesHQ checked Sep 4, 2026	501-1,000	2,358
	“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: company website · checked Sep 4, 2026
14	The Judge GroupPartial evidence	Wayne, FL, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,196
	“The Judge Group is an international leader in business technology consulting, talent solutions, and learning and development.” Source: company website · checked Sep 4, 2026
15	Jade GlobalPartial evidence	San Jose, PA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,891
	“Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.” Source: company website · checked Sep 4, 2026
16	GURUPartial evidence	Rockville, MD, United StatesHQ checked Sep 4, 2026	n/a	1,868
	“Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.” Source: company website · checked Sep 4, 2026
17	Eplus INCPartial evidence	Herndon, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,783
	“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: company website · checked Sep 4, 2026
18	ArganoIndirect evidence	Plano, TX, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,581
	“Argano is the world’s first and largest digital services consultancy focused exclusively on enabling high performance across our clients’ business operations, at scale and around…” Source: company website · checked Sep 4, 2026
19	Joulestowatts Business Solutions PVT LTDIndirect evidence	Dallas, TX, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,422
	“At JoulestoWatts Business Solutions, headquartered in Texas, USA, we stand as a global powerhouse with over 5500+ dedicated professionals, catering to 300+ esteemed clients across…” Source: company website · checked Sep 4, 2026
20	CEIIndirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 4, 2026	501-1,000	1,392
	“In today’s technology-driven world, the mandate of transformation represents both challenges and opportunities.” Source: company website · checked Sep 4, 2026
21	TerralogicPartial evidence	San Jose, TX, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,354
	“Our foundation has been one of the top IT service provider companies -accentuating new heights in providing technology services for the connected world.” Source: company website · checked Sep 4, 2026
22	Trace3Indirect evidence	Irvine, AZ, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,336
	“Trace3 delivers business transformation.” Source: company website · checked Sep 4, 2026
23	Neudesic, An IBM CompanyIndirect evidence	Irvine, PA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,328
	“Neudesic, an IBM Company, is a global professional services firm dedicated to advancing businesses with our Microsoft technology expertise.” Source: company website · checked Sep 4, 2026
24	Strategic Staffing SolutionsStrong evidence	Detroit, MI, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,139
	“Strategic Staffing Solutions (S3) is a woman-owned, global IT consulting and business services corporation that delivers staff augmentation, managed services, total workforce…” Source: company website · checked Sep 4, 2026

Showing 24 of 19,824 IT service management consulting firms based in the United States

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IT service management consulting firms based in the United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 650 HQs

118,237Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

10,663

11-50

5,900

51-200

2,324

201-500

561

501-1,000

179

1,001-5,000

105

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

12,646

61–90

85,559

90–180

57,157

180+

1,819

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 service management consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 service management consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT service management 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 an evidence 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, 157,181 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 service management consulting firms by metro

Frequently asked

How many IT service management consulting firms are there based in the United States?

RevenueBase identified 19,824 IT service management 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?

Insight Global, headquartered in Stamford, tops this list with the largest team on record.

Which city has the most IT service management consulting firms?

New York leads with 650 headquartered companies, followed by Houston (429) and Atlanta (377).

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 157,181 verified decision-maker contacts tracked across these 19,824 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 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.