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Company lists · Data refreshed September 2026

Top 24 IT services companies based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 21,072 companies tracked

RevenueBase identified 21,072 IT services companies headquartered in the United States as of September 2026 and tracks 775,274 professional contacts across them, including 186,157 with verified work emails and 122,030 with mobile numbers. New York is the largest hub.

This list covers IT services companies 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
21,072Companies
775,274Contacts tracked
186,157Verified emails
122,030Mobile numbers
Unlock all 21,072 companies Free signup · no credit card · 500 free credits

The 24 largest IT services companies based in the United States

Ranked by team size
Top 24 of 21,072 IT services companies 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 services companies: 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.
#CompanyHeadquartersEmployeesContacts
1
DXC TechnologyStrong evidence
Ashburn, VA, United StatesHQ checked Sep 4, 202610001+82,827

“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…”

Source: company website · checked Sep 4, 2026
2
GuidehouseIndirect evidence
Mclean, SD, United StatesHQ checked Sep 4, 202610001+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
3
Infinite Computer SolutionsIndirect evidence
Rockville, MD, United StatesHQ checked Sep 4, 202610001+12,923

“Infinite is a.”

Source: company website · checked Sep 4, 2026
4
Apex SystemsIndirect evidence
Glen Allen, VA, United StatesHQ checked Sep 4, 20261,001-5,00012,222

“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
5
MovateIndirect evidence
Plano, TX, United StatesHQ checked Sep 4, 202610001+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
6
HTC Global ServicesIndirect evidence
Troy, MI, United StatesHQ checked Sep 4, 202610001+8,895

“HTC Global Services Inc, founded in 1990, headquartered in Troy, Michigan, is a global provider of Information Technology and Business Process Services and Solutions.”

Source: company website · checked Sep 4, 2026
7
Atos SyntelIndirect evidence
Troy, MI, United StatesHQ checked Sep 4, 202610001+7,344

“Atos|Syntel is a leading global provider of integrated information technology and knowledge process services.”

Source: company website · checked Sep 4, 2026
8
ConnectionStrong evidence
Merrimack, NH, United StatesHQ checked Sep 4, 20261,001-5,0003,454

“As a Global IT Solutions Provider, we connect people with technology that enhances growth, elevates productivity, and empowers innovation.”

Source: company website · checked Sep 4, 2026
9
Visionet Systems INCIndirect evidence
Cranbury, NJ, United StatesHQ checked Sep 4, 202610001+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, 202610001+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
Milestone Technologies, INCStrong evidence
Fremont, CA, United StatesHQ checked Sep 4, 20261,001-5,0002,669

“Milestone Technologies is a global IT Services and Digital Solutions company based in Silicon Valley that helps hundreds of leading corporations deliver technology around the…”

Source: company website · checked Sep 4, 2026
12
Oxford Global ResourcesIndirect evidence
Beverly, VA, United StatesHQ checked Sep 4, 2026501-1,0002,561

“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
PomeroyStrong evidence
Hebron, KY, United StatesHQ checked Sep 4, 20261,001-5,0002,466

“Technology is mission-critical to your business so it must work, continuously.”

Source: company website · checked Sep 4, 2026
14
BeyondsoftStrong evidence
Bellevue, WA, United StatesHQ checked Sep 4, 2026501-1,0002,358

“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
15
CTGStrong evidence
Amherst, NY, United StatesHQ checked Sep 4, 20265,001-10,0002,259

“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: company website · checked Sep 4, 2026
16
NEW ERA TechnologyIndirect evidence
West Chester, FL, United StatesHQ checked Sep 4, 20261,001-5,0001,842

“New Era Technology is the AI, application, and infrastructure partner that simplifies, secures, and scales technology across modern work environments.”

Source: company website · checked Sep 4, 2026
17
Tech MahindraIndirect evidence
Streetman, TX, United StatesHQ checked Sep 4, 2026n/a1,786
Source: company website · checked Sep 4, 2026
18
Eplus INCStrong evidence
Herndon, VA, United StatesHQ checked Sep 4, 20261,001-5,0001,783

“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
19
Quadrant TechnologiesStrong evidence
Redmond, NC, United StatesHQ checked Sep 4, 20261,001-5,0001,676

“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: company website · checked Sep 4, 2026
20
BrooksourceIndirect evidence
Indianapolis, MI, United StatesHQ checked Sep 4, 20261,001-5,0001,469

“Here at Brooksource, relationships are at the center of everything we do.”

Source: company website · checked Sep 4, 2026
21
Joulestowatts Business Solutions PVT LTDIndirect evidence
Dallas, TX, United StatesHQ checked Sep 4, 20261,001-5,0001,422

“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
22
ThriveIndirect evidence
Foxborough, NC, United StatesHQ checked Sep 4, 20261,001-5,0001,418

“Thrive is a NextGen 3.0 global technology outsourcing provider that empowers small and mid-market organizations to transform their technology into a strategic advantage.”

Source: company website · checked Sep 4, 2026
23
Trigent Software INCIndirect evidence
Southborough, MA, United StatesHQ checked Sep 4, 20261,001-5,0001,368

“Trigent is a global leader in software solutions, headquartered in Southborough, MA, with development centers in Boston, Bangalore.”

Source: company website · checked Sep 4, 2026
24
TerralogicStrong evidence
San Jose, TX, United StatesHQ checked Sep 4, 20261,001-5,0001,354

“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

Showing 24 of 21,072 IT services companies based in the United States

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IT services companies based in the United States at a glance

As of Sep 4, 2026
11-50Median size (employees)
New YorkLargest hub · 636 HQs
122,030Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
10,186
11-50
6,860
51-200
2,803
201-500
702
501-1,000
229
1,001-5,000
147
5,001-10,000
22
10001+
41

Verified emails by last verification

0–30
0
31–60
16,905
61–90
101,662
90–180
64,594
180+
2,996

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 services companies, 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 services companies”. 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 services companies, 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, 186,157 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 services companies by metro

Frequently asked

How many IT services companies are there based in the United States?

RevenueBase identified 21,072 IT services companies 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 services companies?

New York leads with 636 headquartered companies, followed by Houston (408) and Austin (303).

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 186,157 verified decision-maker contacts tracked across these 21,072 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.

Ready to reach these companies? Verified emails and direct dials for all 21,072 IT services companies based in the United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · All United States lists · All IT services companies lists · New lists

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.

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