Company lists · Data refreshed November 2026

Top 25 IT consulting and services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 219,141 companies tracked

RevenueBase identified 219,141 company matches for IT consulting and services worldwide as of November 2026 and tracks 6,499,047 professional contacts across them, including 1,568,236 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for IT consulting and services worldwide, 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 November 6, 2026. Country and city lists for IT consulting and services follow the table.

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 Nov 6, 2026 How this list was built

219,141Companies

6,499,047Contacts tracked

1,568,236Verified emails

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The 25 largest IT consulting and services worldwide

Ranked by team size

Top 25 of 219,141 company matches for IT consulting and services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Tata Consultancy Services	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	10001+	661,392 contacts →
	Exact match “Tata Consultancy Services (TCS) is the technology partner of choice for industry-leading organizations worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Accenture	Exact match	Dublin 2, United KingdomHQ recorded Nov 6, 2026	10001+	590,896 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Infosys	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	10001+	339,644 contacts →
	Exact match “Infosys is a global leader in next-generation digital services and consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	WIPRO	Exact match	Bangalore, ON, IndiaHQ recorded Nov 6, 2026	10001+	264,107 contacts →
	Exact match “Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading AI-powered technology services and consulting company focused on building innovative solutions that address…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Tech Mahindra	Exact match	Pune, IndiaHQ recorded Nov 6, 2026	10001+	145,360 contacts →
	Exact match “Tech Mahindra offers technology consulting and digital solutions to global enterprises across industries, enabling transformative scale at unparalleled speed.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	CGI	Exact match	Dallas, TX, ItalyHQ recorded Nov 6, 2026	10001+	91,939 contacts →
	Exact match “Insights you can act on.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	DXC Technology	Exact match	Ashburn, VA, United StatesHQ recorded Nov 6, 2026	10001+	86,844 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 · Nov 6, 2026 · View company records in RevenueBase
8	Kyndryl	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	47,955 contacts →
	Exact match “We have the world’s best talent that design, run, and manage the most advanced and reliable technology infrastructure each day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	EXL	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	46,962 contacts →
	Exact match “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Mphasis	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	10001+	46,102 contacts →
	Exact match “A leading applied technology services company, we innovate to deliver service excellence and successful outcomes across sales, delivery and development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Telus Digital	Exact match	Vancouver, NV, CanadaHQ recorded Nov 6, 2026	10001+	42,677 contacts →
	Exact match “TELUS Digital crafts unique and enduring experiences for customers and employees, and creates future-focused digital transformations that stand the test of time.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	NTT Data	Exact match	Tokyo, JapanHQ recorded Nov 6, 2026	10001+	42,145 contacts →
	Exact match “NTT DATA – a part of NTT Group – IT and business services headquartered in Tokyo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Sopra Steria	Exact match	Paris, FranceHQ recorded Nov 6, 2026	10001+	39,122 contacts →
	Exact match “Sopra Steria, a major Tech player in Europe with employees in nearly 30 countries, is recognised for its consulting, digital services and solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	L&t Technology Services	Exact match	Vadodara, IndiaHQ recorded Nov 6, 2026	10001+	36,322 contacts →
	Exact match “L&T Technology Services (LTTS) is one of the world’s leading engineering and technology service providers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Virtusa	Exact match	Southborough, MA, United StatesHQ recorded Nov 6, 2026	10001+	31,368 contacts →
	Exact match “Virtusa is a global product and platform engineering services company that makes experiences better with technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Teksystems	Exact match	Hanover, MD, United StatesHQ recorded Nov 6, 2026	10001+	27,308 contacts →
	Exact match “We’re TEKsystems and TEKsystems Global Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	NTT Data, INC	Exact match	Tokyo, JapanHQ recorded Nov 6, 2026	10001+	21,602 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	ALTEN	Exact match	Boulogne-billancourt Cedex, FranceHQ recorded Nov 6, 2026	10001+	19,953 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	ZS	Exact match	Evanston, United StatesHQ recorded Nov 6, 2026	10001+	18,455 contacts →
	Exact match “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	ITC Infotech	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	10001+	17,995 contacts →
	Exact match “ITC Infotech is a global technology solution and services leader providing business-friendly solutions, that enable future-readiness for clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Zensar Technologies	Exact match	Pune, IndiaHQ recorded Nov 6, 2026	10001+	15,411 contacts →
	Exact match “Zensar stands out as a premier technology consulting and services company, embracing an ‘experience-led everything’ philosophy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	BDO	Exact match	Brussels, BelgiumHQ recorded Nov 6, 2026	10001+	14,501 contacts →
	Exact match “BDO is the leading provider of professional services within the mid-tier of our profession.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Birlasoft	Exact match	Pune, NC, IndiaHQ recorded Nov 6, 2026	10001+	14,500 contacts →
	Exact match “Navigating Change.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Infinite Computer Solutions	Exact match	Rockville, United StatesHQ recorded Nov 6, 2026	10001+	14,363 contacts →
	Exact match “Infinite is a.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Softtek	Exact match	Monterrey, MexicoHQ recorded Nov 6, 2026	10001+	14,096 contacts →
	Exact match “At Softtek, we drive the strategic development of our clients through software engineering.” Recorded in the RevenueBase company graph · Nov 6, 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 consulting and services”. 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 219,141 IT consulting and services worldwide

See the full list, filter by size, metro and specialty, and access 1,568,236 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT consulting and services worldwide at a glance

As of Nov 6, 2026

24.1%Verified-email coverage

29.7Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

118,898

11-50

68,017

51-200

21,879

201-500

5,332

501-1,000

1,625

1,001-5,000

1,211

5,001-10,000

207

10001+

352

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for IT consulting and services are linked below.
What qualifies: Company records worldwide whose business descriptions match “IT consulting and services” 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. 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 1,568,236 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 November 6, 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 consulting and services by location

874 lists · largest first

Every IT consulting and services 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 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 consulting and services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT consulting and services are there worldwide?

RevenueBase identified 219,141 company matches for IT consulting and services worldwide as of November 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?

Tata Consultancy Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most IT consulting and services?

The United States leads with 37,680 companies, followed by India (28,537) and the United Kingdom (10,293). Every IT consulting and services list by country and city is linked on this page.

Which city has the most IT consulting and services?

London leads with 3444 company records, followed by Bangalore (2791) and Hyderabad (2693).

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 1,568,236 professional contacts with verified work emails tracked across these 219,141 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 November 6, 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 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.