Company lists · Data refreshed September 2026

Top 25 IT services companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 58,241 companies tracked

RevenueBase identified 58,241 IT services companies worldwide as of September 2026 and tracks 2,245,943 professional contacts across them, including 543,115 with verified work emails and 197,249 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers 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 4, 2026. Country and city lists for 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 4, 2026 86% judged on-target in blind review

58,241Companies

2,245,943Contacts tracked

543,115Verified emails

197,249Mobile numbers

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The 25 largest IT services companies worldwide

Ranked by team size

Top 25 of 58,241 IT services companies worldwide, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to 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	Tata Consultancy Services	Indirect evidence	Mumbai, IndiaHQ checked Sep 4, 2026	10001+	637,773 contacts →
	Indirect evidence “Tata Consultancy Services (TCS) is the technology partner of choice for industry leading organizations worldwide.” Source: RevenueBase Database · checked Sep 4, 2026
2	Hcltech	Indirect evidence	Noida, NY, IndiaHQ checked Sep 4, 2026	10001+	233,342 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 4, 2026
3	Tech Mahindra	Indirect evidence	Pune, IndiaHQ checked Sep 4, 2026	10001+	138,625 contacts →
	Indirect evidence “Tech Mahindra offers technology consulting and digital solutions to global enterprises across industries, enabling transformative scale at unparalleled speed.” Source: RevenueBase Database · checked Sep 4, 2026
4	DXC Technology	Strong evidence	Ashburn, VA, United StatesHQ checked Sep 4, 2026	10001+	82,827 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 4, 2026
5	Virtusa	Indirect evidence	Southborough, ON, United StatesHQ checked Sep 4, 2026	10001+	29,576 contacts →
	Indirect evidence “Virtusa is a global product and platform engineering services company that makes experiences better with technology.” Source: RevenueBase Database · checked Sep 4, 2026
6	FPT Software	Strong evidence	Hanoi, VietnamHQ checked Sep 4, 2026	10001+	19,799 contacts →
	Strong evidence “FPT Software is a global technology and IT services provider headquartered in Vietnam, with USD 1.34 billion in revenue (2025) and over employees in 30+ countries.” Source: RevenueBase Database · checked Sep 4, 2026
7	ITC Infotech	Indirect evidence	Bangalore, IndiaHQ checked Sep 4, 2026	10001+	16,896 contacts →
	Indirect evidence “ITC Infotech is a global technology solution and services leader providing business-friendly solutions, that enable future-readiness for clients.” Source: RevenueBase Database · checked Sep 4, 2026
8	ALTEN	Indirect evidence	Boulogne-billancourt Cedex, FranceHQ checked Sep 4, 2026	10001+	16,890 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 4, 2026
9	Computacenter	Indirect evidence	Hatfield, United KingdomHQ checked Sep 4, 2026	10001+	16,443 contacts →
	Indirect evidence “Computacenter is a leading independent technology and services provider, trusted by large corporate and public sector organisations.” Source: RevenueBase Database · checked Sep 4, 2026
10	Birlasoft	Indirect evidence	Pune, IndiaHQ checked Sep 4, 2026	10001+	14,049 contacts →
	Indirect evidence “Navigating Change.” Source: RevenueBase Database · checked Sep 4, 2026
11	Softtek	Indirect evidence	Monterrey, MexicoHQ checked Sep 4, 2026	10001+	13,406 contacts →
	Indirect evidence “At Softtek, we drive the strategic development of our clients through software engineering.” Source: RevenueBase Database · checked Sep 4, 2026
12	Guidehouse	Indirect evidence	Mclean, SD, United StatesHQ checked Sep 4, 2026	10001+	12,933 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 4, 2026
13	Infinite Computer Solutions	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 4, 2026	10001+	12,923 contacts →
	Indirect evidence “Infinite is a.” Source: RevenueBase Database · checked Sep 4, 2026
14	Apex Systems	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 4, 2026	1,001-5,000	12,222 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 4, 2026
15	Movate	Indirect evidence	Plano, TX, United StatesHQ checked Sep 4, 2026	10001+	12,175 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 4, 2026
16	HTC Global Services	Indirect evidence	Troy, MI, United StatesHQ checked Sep 4, 2026	10001+	8,895 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 4, 2026
17	Logica	Strong evidence	Montreal, QC, CanadaHQ checked Sep 4, 2026	10001+	7,426 contacts →
	Strong evidence “Logica is now part of CGI, a global IT and business process services provider delivering business consulting, systems integration and outsourcing services.” Source: RevenueBase Database · checked Sep 4, 2026
18	Atos Syntel	Indirect evidence	Troy, MI, United StatesHQ checked Sep 4, 2026	10001+	7,344 contacts →
	Indirect evidence “Atos\|Syntel is a leading global provider of integrated information technology and knowledge process services.” Source: RevenueBase Database · checked Sep 4, 2026
19	Datacom	Indirect evidence	Auckland, New ZealandHQ checked Sep 4, 2026	5,001-10,000	5,964 contacts →
	Indirect evidence “Customer focused values.” Source: RevenueBase Database · checked Sep 4, 2026
20	SII Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 4, 2026	5,001-10,000	5,538 contacts →
	Indirect evidence “With over 7 500 Power People, Sii is Poland’s #1 partner for technology consulting, AI-driven digital transformation, engineering, and business services, empowering companies to…” Source: RevenueBase Database · checked Sep 4, 2026
21	Adesso SE	Indirect evidence	Dortmund, GermanyHQ checked Sep 4, 2026	5,001-10,000	5,379 contacts →
	Indirect evidence “The future belongs to companies that effectively translate agentic AI into value creation.” Source: RevenueBase Database · checked Sep 4, 2026
22	Aspire Systems	Indirect evidence	Chennai, IndiaHQ checked Sep 4, 2026	1,001-5,000	4,977 contacts →
	Indirect evidence “Aspire Systems is a global technology services firm serving as a trusted technology partner for our customers.” Source: RevenueBase Database · checked Sep 4, 2026
23	Matrix	Indirect evidence	Kfar Saba, IsraelHQ checked Sep 4, 2026	10001+	4,955 contacts →
	Indirect evidence “matrix is the leading technology services company, employing over professionals worldwide.” Source: RevenueBase Database · checked Sep 4, 2026
24	Atos IT Solutions And Services A S	Strong evidence	Taastrup, DenmarkHQ checked Sep 4, 2026	n/a	3,697 contacts →
	Strong evidence “Atos er en international IT-serviceleverandør med en årlig omsætning i 2012 på 8.8 milliarder EUR og 76.400 medarbejdere i 47 lande.” Source: RevenueBase Database · checked Sep 4, 2026
25	Getronics	Indirect evidence	Amsterdam-duivendrecht, NetherlandsHQ checked Sep 4, 2026	1,001-5,000	3,674 contacts →
	Indirect evidence “We empower your business to stay competitive by offering flexible, secure and reliable technology services, tailored to your unique needs, helping to drive growth, increase…” Source: RevenueBase Database · checked Sep 4, 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 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 IT services companies.
Partial evidence: Its own public description names part of 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 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 58,241 IT services companies worldwide

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IT services companies worldwide at a glance

As of Sep 4, 2026

24.2%Verified-email coverage

8.8%Mobile-number coverage

38.6Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

32,662

11-50

16,933

51-200

5,441

201-500

1,394

501-1,000

468

1,001-5,000

375

5,001-10,000

10001+

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 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: 44 countries, largest first: the United States, the United Kingdom, Brazil, Germany, France, Canada, Australia, Italy, Spain, the Netherlands and 34 more. Country and city lists for IT services companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “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 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 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, 543,115 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 location

341 lists · largest first

Every 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 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 IT services companies are there worldwide?

RevenueBase identified 58,241 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?

Tata Consultancy Services, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most IT services companies?

The United States leads with 21,072 companies, followed by the United Kingdom (5,200) and Brazil (4,358). Every IT services companies list by country and city is linked on this page.

Which city has the most IT services companies?

London leads with 1434 headquartered companies, followed by Sao Paulo (992) and New York (637).

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 543,115 verified decision-maker contacts tracked across these 58,241 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 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.