Company lists · Data refreshed September 2026

Top 25 Enterprise IT services companies worldwide

Name: Enterprise IT services companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 53,635 companies tracked

RevenueBase identified 53,635 enterprise IT services companies worldwide as of September 2026 and tracks 2,720,687 professional contacts across them, including 771,224 with verified work emails and 270,660 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers enterprise IT services companies worldwide, 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 29, 2026. Country and city lists for enterprise IT services companies follow the table.

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 29, 2026 86% judged on-target in blind review

53,635Companies

2,720,687Contacts tracked

771,224Verified emails

270,660Mobile numbers

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The 25 largest enterprise IT services companies worldwide

Ranked by team size

Top 25 of 53,635 enterprise IT services companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise IT services companies: 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	Accenture	Partial evidence	Dublin 2, IrelandHQ checked Sep 29, 2026	10001+	551,347 contacts →
	Partial evidence “Accenture helps the world’s leading enterprises reinvent by building their digital core and unleashing the power of AI to create value at speed for organizations across industries.” Source: RevenueBase Database · checked Sep 29, 2026
2	Hcltech	Indirect evidence	Noida, CA, IndiaHQ checked Sep 29, 2026	10001+	234,037 contacts →
	Indirect evidence “HCLTech is a global technology company, home to more than people across 60 countries, delivering industry-leading capabilities centered around AI, digital, engineering, cloud and…” Source: RevenueBase Database · checked Sep 29, 2026
3	CGI	Indirect evidence	ItalyHQ checked Sep 29, 2026	10001+	86,480 contacts →
	Indirect evidence “Insights you can act on.” Source: RevenueBase Database · checked Sep 29, 2026
4	DXC Technology	Partial evidence	Ashburn, VA, United StatesHQ checked Sep 29, 2026	10001+	82,768 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 29, 2026
5	Kyndryl	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	10001+	45,903 contacts →
	Indirect evidence “We have the world’s best talent that design, run, and manage the most advanced and reliable technology infrastructure each day.” Source: RevenueBase Database · checked Sep 29, 2026
6	Sopra Steria	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	10001+	36,960 contacts →
	Indirect evidence “Sopra Steria, a major Tech player in Europe with employees in nearly 30 countries, is recognised for its consulting, digital services and solutions.” Source: RevenueBase Database · checked Sep 29, 2026
7	Virtusa	Indirect evidence	Southborough, MA, United StatesHQ checked Sep 29, 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 29, 2026
8	NTT Data North America	Indirect evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	10001+	22,390 contacts →
	Indirect evidence “NTT DATA, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
9	Unisys	Indirect evidence	Blue Bell, PA, United StatesHQ checked Sep 29, 2026	10001+	18,676 contacts →
	Indirect evidence “Unisys is a global technology solutions company that powers breakthroughs for the world’s leading organizations.” Source: RevenueBase Database · checked Sep 29, 2026
10	ALTEN	Indirect evidence	Boulogne-billancourt Cedex, FranceHQ checked Sep 29, 2026	10001+	17,044 contacts →
	Indirect evidence “ALTEN is committed to meeting the expectations of its stakeholders and anticipating their requirements in the fields of innovation, R&D, and technological information systems.” Source: RevenueBase Database · checked Sep 29, 2026
11	Softtek	Indirect evidence	Monterrey, MexicoHQ checked Sep 29, 2026	10001+	13,490 contacts →
	Indirect evidence “At Softtek, we drive the strategic development of our clients through software engineering.” Source: RevenueBase Database · checked Sep 29, 2026
12	CDW	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 29, 2026	10001+	13,155 contacts →
	Indirect evidence “At CDW, we know how to make technology work so people can do great things.” Source: RevenueBase Database · checked Sep 29, 2026
13	Infinite Computer Solutions	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 29, 2026	10001+	12,891 contacts →
	Indirect evidence “Infinite is a.” Source: RevenueBase Database · checked Sep 29, 2026
14	Guidehouse	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 29, 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 29, 2026
15	Movate	Indirect evidence	Plano, TX, United StatesHQ checked Sep 29, 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 29, 2026
16	Apex Systems	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 29, 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 29, 2026
17	Softserve	Partial evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	10001+	11,123 contacts →
	Partial evidence “SoftServe is a technology services company specializing in autonomous enterprises with capabilities in AI-native applications, physical and agentic AI, cloud and data solutions.” Source: RevenueBase Database · checked Sep 29, 2026
18	CA Technologies	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 29, 2026	10001+	11,094 contacts →
	Indirect evidence “CA Technologies is now a Broadcom company.” Source: RevenueBase Database · checked Sep 29, 2026
19	Allianz Technology	Partial evidence	Unterföhring, GermanyHQ checked Sep 29, 2026	10001+	10,428 contacts →
	Partial evidence “With its headquarters in Munich, Germany, Allianz Technology is Allianz's global IT service provider and delivers IT solutions that drive the group's digitalization.” Source: RevenueBase Database · checked Sep 29, 2026
20	T-Systems International	Indirect evidence	Frankfurt, GermanyHQ checked Sep 29, 2026	10001+	10,154 contacts →
	Indirect evidence “Your digitalization partner with industry expertise With locations in more than 26 countries and over employees (2024), T-Systems is one of the leading providers of digital…” Source: RevenueBase Database · checked Sep 29, 2026
21	Slalom	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	10001+	10,032 contacts →
	Indirect evidence “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Source: RevenueBase Database · checked Sep 29, 2026
22	Endava	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	10001+	9,653 contacts →
	Indirect evidence “For over two decades, we have been harnessing technology to drive meaningful change.” Source: RevenueBase Database · checked Sep 29, 2026
23	World Wide Technology	Indirect evidence	Maryland Heights, MO, United StatesHQ checked Sep 29, 2026	10001+	9,184 contacts →
	Indirect evidence “We are thinkers and doers.” Source: RevenueBase Database · checked Sep 29, 2026
24	HTC Global Services	Indirect evidence	Troy, MI, United StatesHQ checked Sep 29, 2026	10001+	8,866 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026
25	Dimension Data	Indirect evidence	Bryanston, South AfricaHQ checked Sep 29, 2026	10001+	8,205 contacts →
	Indirect evidence “Dimension Data is a leading African born technology provider operating in the Middle East and Africa, offering a portfolio of services including systems integration, managed…” Source: RevenueBase Database · checked Sep 29, 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: enterprise IT services companies. 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 enterprise IT services companies.
Partial evidence: Its own public description names part of enterprise IT services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise IT services companies. 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 53,635 enterprise IT services companies worldwide

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Enterprise IT services companies worldwide at a glance

As of Sep 29, 2026

28.3%Verified-email coverage

9.9%Mobile-number coverage

50.7Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

26,774

11-50

16,845

51-200

6,560

201-500

1,782

501-1,000

664

1,001-5,000

559

5,001-10,000

10001+

135

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 enterprise IT services companies, 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.
Coverage: 45 countries, largest first: the United States, the United Kingdom, Brazil, Germany, France, Canada, Italy, Australia, Spain, South Africa and 35 more. Country and city lists for enterprise IT services companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “enterprise IT services companies”. 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 enterprise IT services companies), 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 enterprise IT services companies, and records with no verified work email.
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, 771,224 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 29, 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.

Enterprise IT services companies by location

299 lists · largest first

Every Enterprise IT services companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 enterprise IT services companies, 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 enterprise IT services companies are there worldwide?

RevenueBase identified 53,635 enterprise IT services companies worldwide 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?

Accenture, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most enterprise IT services companies?

The United States leads with 18,188 companies, followed by the United Kingdom (4,383) and Brazil (4,119). Every enterprise IT services companies list by country and city is linked on this page.

Which city has the most enterprise IT services companies?

London leads with 1401 headquartered companies, followed by Sao Paulo (1063) and Paris (655).

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 771,224 verified decision-maker contacts tracked across these 53,635 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 29, 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.