Company lists · Data refreshed September 2026

Top 25 IT services firms based in the United States

Name: IT services 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 27, 2026 23,769 companies tracked

RevenueBase identified 23,769 IT services firms headquartered in the United States as of September 2026 and tracks 897,826 professional contacts across them, including 221,338 with verified work emails and 150,248 with mobile numbers. New York is the largest hub.

This list covers IT services 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 27, 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 27, 2026 86% judged on-target in blind review

23,769Companies

897,826Contacts tracked

221,338Verified emails

150,248Mobile numbers

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The 25 largest IT services firms based in the United States

Ranked by team size

Top 25 of 23,769 IT services firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT services 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	DXC Technology	Strong evidence	Ashburn, VA, United StatesHQ checked Sep 27, 2026	10001+	82,768 contacts →
	Strong 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 27, 2026
2	Virtusa	Indirect evidence	Southborough, MA, United StatesHQ checked Sep 27, 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 27, 2026
3	NTT Data North America	Indirect evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	10001+	22,390 contacts →
	Indirect evidence “NTT DATA, Inc.” Source: RevenueBase Database · checked Sep 27, 2026
4	Infinite Computer Solutions	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 27, 2026	10001+	12,891 contacts →
	Indirect evidence “Infinite is a.” Source: RevenueBase Database · checked Sep 27, 2026
5	Guidehouse	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 27, 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 27, 2026
6	Movate	Indirect evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	10001+	12,237 contacts →
	Indirect evidence “Movate is a digital technology and customer experience services company committed to disrupting the industry with boundless agility, human-centered innovation, and relentless…” Source: RevenueBase Database · checked Sep 27, 2026
7	Apex Systems	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 27, 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 27, 2026
8	SHI International Corp	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 27, 2026	5,001-10,000	6,734 contacts →
	Indirect evidence “Think of SHI as your personal technology concierge.” Source: RevenueBase Database · checked Sep 27, 2026
9	Kforce INC	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 27, 2026	1,001-5,000	6,147 contacts →
	Indirect evidence “Kforce is a solutions firm specializing in technology, finance and accounting, and professional staffing services.” Source: RevenueBase Database · checked Sep 27, 2026
10	Lancesoft, INC	Strong evidence	Herndon, VA, United StatesHQ checked Sep 27, 2026	5,001-10,000	4,877 contacts →
	Strong evidence “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Source: RevenueBase Database · checked Sep 27, 2026
11	Isoftstone	Strong evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	10001+	4,041 contacts →
	Strong evidence “iSoftStone is a global IT service and consulting company that creates value and drives success through technology solutions, service excellence, and digital innovation.” Source: RevenueBase Database · checked Sep 27, 2026
12	RGP	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,650 contacts →
	Indirect evidence “RGP (Nasdaq: RGP) is an award-winning global professional services firm with three decades of experience helping the world’s top organizations navigate change and seize…” Source: RevenueBase Database · checked Sep 27, 2026
13	Apexon	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 27, 2026	5,001-10,000	3,532 contacts →
	Indirect evidence “Apexon is a technology services firm specializing in accelerating business transformation and engineering intelligent enterprises.” Source: RevenueBase Database · checked Sep 27, 2026
14	Connection	Strong evidence	Merrimack, NH, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,461 contacts →
	Strong evidence “As a Global IT Solutions Provider, we connect people with technology that enhances growth, elevates productivity, and empowers innovation.” Source: RevenueBase Database · checked Sep 27, 2026
15	Visionet Systems INC	Indirect evidence	Cranbury, NJ, United StatesHQ checked Sep 27, 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 27, 2026
16	Genpact Headstrong Capital Markets	Strong evidence	Reston, VA, United StatesHQ checked Sep 27, 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 27, 2026
17	VEE Technologies	Indirect evidence	Decatur, GA, United StatesHQ checked Sep 27, 2026	5,001-10,000	2,933 contacts →
	Indirect evidence “Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.” Source: RevenueBase Database · checked Sep 27, 2026
18	Miracle Software Systems, INC	Strong evidence	Novi, MI, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,714 contacts →
	Strong evidence “Miracle Software Systems is a global IT services company that has been consistently delivering true value for businesses for the past 29 years.” Source: RevenueBase Database · checked Sep 27, 2026
19	Oxford Global Resources	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 27, 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 27, 2026
20	CTG	Strong evidence	Amherst, NY, United StatesHQ checked Sep 27, 2026	5,001-10,000	2,264 contacts →
	Strong 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 27, 2026
21	Astreya	Strong evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,215 contacts →
	Strong evidence “Astreya is the leading IT solutions provider for some of the world's most recognizable and innovative organizations.” Source: RevenueBase Database · checked Sep 27, 2026
22	IT Convergence	Strong evidence	Irving, IL, United StatesHQ checked Sep 27, 2026	501-1,000	1,950 contacts →
	Strong evidence “IT Convergence is a global Oracle Platinum Partner with a comprehensive service offering across all three pillars of the Cloud (IaaS, PaaS, SaaS), including Consulting/Advisory…” Source: RevenueBase Database · checked Sep 27, 2026
23	Devsinc	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,932 contacts →
	Indirect evidence “We are a global organization with two state-of-the-art delivery centers in Southeast Asia and four strategically located offices across three continents.” Source: RevenueBase Database · checked Sep 27, 2026
24	GURU	Strong evidence	Rockville, MD, United StatesHQ checked Sep 27, 2026	n/a	1,906 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 27, 2026
25	Gyansys INC	Indirect evidence	Carmel, IN, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,864 contacts →
	Indirect evidence “Founded in 2005, GyanSys is a leading global system integrator company supporting enterprise customers worldwide.” Source: RevenueBase Database · checked Sep 27, 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 services 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 IT services firms.
Partial evidence: Its own public description names part of IT services firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT services 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 23,769 IT services firms based in the United States

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IT services firms based in the United States at a glance

As of Sep 27, 2026

24.7%Verified-email coverage

16.7%Mobile-number coverage

37.8Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11,637

11-50

7,744

51-200

3,086

201-500

763

501-1,000

276

1,001-5,000

159

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 29.0d

126,6000–30

82,55731–60

6,92061–90

80790–180

4,454180+

Company record updated

Median 91.0d

00–30

106,84731–60

315,90461–90

420,15090–180

54,925180+

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 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 “IT services 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 IT services 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 IT services 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, 221,338 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 27, 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 firms 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 services 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 IT services firms are there based in the United States?

RevenueBase identified 23,769 IT services 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?

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

Which city has the most IT services firms?

New York leads with 691 headquartered companies, followed by Houston (469) and Dallas (340).

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 221,338 verified decision-maker contacts tracked across these 23,769 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 27, 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.