Company lists · Data refreshed September 2026

Top 25 IT professional services companies based in the United States

Name: IT professional services companies 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 20,915 companies tracked

RevenueBase identified 20,915 company matches for IT professional services companies associated with the United States as of September 2026 and tracks 657,106 professional contacts across them, including 186,944 with verified work emails and 147,708 with mobile numbers. New York is the largest hub.

This list covers company matches for IT professional services companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

20,915Companies

657,106Contacts tracked

186,944Verified emails

147,708Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest IT professional services companies based in the United States

Ranked by team size

Top 25 of 20,915 company matches for IT professional services companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	DXC Technology	Exact match	Ashburn, VA, United StatesHQ recorded Sep 27, 2026	10001+	82,768 contacts →
	Exact match “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Teksystems	Exact match	Hanover, MD, United StatesHQ recorded Sep 27, 2026	10001+	24,693 contacts →
	Exact match “We’re TEKsystems and TEKsystems Global Services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	NTT Data North America	Exact match	Plano, TX, United StatesHQ recorded Sep 27, 2026	10001+	22,390 contacts →
	Exact match “NTT DATA, Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	CDW	Exact match	Vernon Hills, IL, United StatesHQ recorded Sep 27, 2026	10001+	13,155 contacts →
	Exact match “At CDW, we know how to make technology work so people can do great things.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Infinite Computer Solutions	Exact match	Rockville, MD, United StatesHQ recorded Sep 27, 2026	10001+	12,891 contacts →
	Exact match “Infinite is a.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Guidehouse	Exact match	Mclean, VA, United StatesHQ recorded Sep 27, 2026	10001+	12,815 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Apex Systems	Exact match	Glen Allen, VA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	12,231 contacts →
	Exact match “Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 27, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Yash Technologies	Exact match	East Moline, IL, United StatesHQ recorded Sep 27, 2026	5,001-10,000	7,769 contacts →
	Exact match “YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Compucom	Exact match	Fort Mill, SC, United StatesHQ recorded Sep 27, 2026	5,001-10,000	7,753 contacts →
	Exact match “Unleash Your Digital Workplace Potential with Compucom To be at the forefront of your industry, having the right technology is non-negotiable.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	SHI International Corp	Exact match	Somerset, NJ, United StatesHQ recorded Sep 27, 2026	5,001-10,000	6,734 contacts →
	Exact match “Think of SHI as your personal technology concierge.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Aricent	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 27, 2026	10001+	4,302 contacts →
	Exact match “Aricent is now Altran, delivering industry innovations at future speed.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	RGP	Exact match	Dallas, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	3,650 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Connection	Exact match	Merrimack, NH, United StatesHQ recorded Sep 27, 2026	1,001-5,000	3,461 contacts →
	Exact match “As a Global IT Solutions Provider, we connect people with technology that enhances growth, elevates productivity, and empowers innovation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Visionet Systems INC	Exact match	Cranbury, NJ, United StatesHQ recorded Sep 27, 2026	10001+	3,119 contacts →
	Exact match “Visionet is a premier digital technology solutions company built on the premise of disruptive innovation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	VEE Technologies	Exact match	Decatur, GA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	2,933 contacts →
	Exact match “Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Speridian Technologies	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,619 contacts →
	Exact match “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Oxford Global Resources	Exact match	Beverly, MA, United StatesHQ recorded Sep 27, 2026	501-1,000	2,564 contacts →
	Exact match “Oxford Global Resources delivers tailored solutions for any technical challenges you are facing using our partnership-first approach.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	People Tech Group INC	Exact match	Redmond, WA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,434 contacts →
	Exact match “People Tech Group is a leading Enterprise Solutions, Digital Transformation, Data Intelligence, and Modern Operation services provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Beyondsoft	Exact match	Bellevue, WA, United StatesHQ recorded Sep 27, 2026	501-1,000	2,359 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	CTG	Exact match	Amherst, NY, United StatesHQ recorded Sep 27, 2026	5,001-10,000	2,264 contacts →
	Exact match “CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Astreya	Exact match	San Jose, CA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,215 contacts →
	Exact match “Astreya is the leading IT solutions provider for some of the world's most recognizable and innovative organizations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	CBTS	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,211 contacts →
	Exact match “CBTS serves enterprise and midmarket clients in all industries across North America.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	IT Convergence	Exact match	Irving, IL, United StatesHQ recorded Sep 27, 2026	501-1,000	1,950 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Gspann Technologies, INC	Exact match	Milpitas, CA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,878 contacts →
	Exact match “GSPANN is a US-based consulting services provider focused on implementations in Enterprise Content Management (ECM), Business Intelligence & Mobile Solutioning initiatives.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “IT professional services companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 20,915 IT professional services companies based in the United States

See the full list, filter by size, metro and specialty, and access 186,944 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

IT professional services companies based in the United States at a glance

As of Sep 27, 2026

28.4%Verified-email coverage

22.5%Mobile-number coverage

31.4Average 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

9,704

11-50

6,873

51-200

3,073

201-500

741

501-1,000

280

1,001-5,000

156

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

105,5580–30

72,01631–60

5,37061–90

16090–180

3,840180+

Company record updated

Median 91.0d

00–30

105,78831–60

225,21761–90

289,57690–180

36,525180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “IT professional services companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 186,944 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

IT professional services companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT professional services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 20,915 company matches for IT professional services companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

DXC Technology tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most IT professional services companies?

New York leads with 613 company records, followed by Houston (455) and Dallas (343).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 186,944 professional contacts with verified work emails tracked across these 20,915 companies; direct dials are available where recorded.

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.

Ready to reach these companies? Verified emails and direct dials for all 20,915 IT professional services companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

IT professional services companies by geography

Browse the directory

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.