Company lists · Data refreshed September 2026

Top 25 IT audits and consulting services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 17,919 companies tracked

RevenueBase identified 17,919 company matches for IT audits and consulting services worldwide as of September 2026 and tracks 208,211 professional contacts across them, including 58,818 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for IT audits and consulting 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 September 21, 2026. Country and city lists for IT audits and consulting 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 Sep 21, 2026 How this list was built

17,919Companies

208,211Contacts tracked

58,818Verified emails

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The 25 largest IT audits and consulting services worldwide

Ranked by team size

Top 25 of 17,919 company matches for IT audits and consulting services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Ernst & Young	Exact match	Shi, ChinaHQ recorded Sep 21, 2026	10001+	4,476 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,222 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	BDO Brazil	Exact match	Sp, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,791 contacts →
	Exact match “Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Grant Thornton Sweden	Exact match	Stockholm, SwedenHQ recorded Sep 21, 2026	1,001-5,000	1,724 contacts →
	Exact match “Grant Thornton är ett ledande revisions- och rådgivningsföretag med över 1400 medarbetare som erbjuder tjänster inom revision, skatt, redovisning och specialistrådgivning.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Sikich	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,688 contacts →
	Exact match “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Kpmg Belgium	Exact match	Zaventem, BelgiumHQ recorded Sep 21, 2026	1,001-5,000	1,592 contacts →
	Exact match “Uncovering a world of opportunity together.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Kpmg Norway	Exact match	Oslo, NorwayHQ recorded Sep 21, 2026	1,001-5,000	1,498 contacts →
	Exact match “KPMG er mest kjent som revisorer, forretningskonsulenter og advokater, men vi er også mye mer.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Nava Tech For Business	Exact match	Barueri, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,452 contacts →
	Exact match “Atuamos no core de empresas líderes em seus segmentos, onde tecnologia, estratégia e operação se encontram.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	RSM Ebner Stolz	Exact match	Stuttgart, GermanyHQ recorded Sep 21, 2026	1,001-5,000	1,442 contacts →
	Exact match “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Trace3	Exact match	Irvine, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,345 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	PWC Thailand	Exact match	Bangkok, ThailandHQ recorded Sep 21, 2026	1,001-5,000	1,308 contacts →
	Exact match “At PwC, we help clients build trust and reinvent so they can turn complexity into competitive advantage.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,232 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Centric Consulting	Exact match	Dayton, OH, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,113 contacts →
	Exact match “Committed to delivering tailored solutions and unmatched experiences, Centric Consulting is an international business and technology consulting firm that combines the benefits of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Synoptek	Exact match	Costa Mesa, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,037 contacts →
	Exact match “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Coalfire	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	947 contacts →
	Exact match “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Buchanan Technologies	Exact match	Grapevine, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	818 contacts →
	Exact match “As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	MTI	Exact match	Staines-upon-thames, United KingdomHQ recorded Sep 21, 2026	201-500	764 contacts →
	Exact match “MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Softcell Technologies Global Pvt. LTD	Exact match	Mumbai, IndiaHQ recorded Sep 21, 2026	501-1,000	763 contacts →
	Exact match “With 35 years of experience, Softcell Technologies Global is a trusted IT services provider specialising in (i) IT security and cybersecurity solutions,(ii) cloud / on-premise…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Lgs, An IBM Company	Exact match	Québec, QC, CanadaHQ recorded Sep 21, 2026	501-1,000	742 contacts →
	Exact match “A consulting firm providing technology solutions and advisory services to both private and public sector organizations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	The Select Group	Exact match	Raleigh, NC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	651 contacts →
	Exact match “TSG is a technology consulting and services partner that helps organizations move faster, operate smarter, and extract greater value from technology investments in rapidly…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	628 contacts →
	Exact match “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	BDO Austria	Exact match	Wien, AustriaHQ recorded Sep 21, 2026	1,001-5,000	599 contacts →
	Exact match “Holen Sie sich eine Datenschutzzertifizierung für Ihr Unternehmen.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Dean Dorton	Exact match	Lexington, KY, United StatesHQ recorded Sep 21, 2026	501-1,000	590 contacts →
	Exact match “Dean Dorton provides an integrated suite of audit, tax, business management, consulting, and technology solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	NIC	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 21, 2026	n/a	581 contacts →
	Exact match “NIC has been providing IT Solutions, Cybersecurity, and Cloud Services for businesses and organizations for the past two decades.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Solomonedwards	Exact match	Wayne, PA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	557 contacts →
	Exact match “For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…” Recorded in the RevenueBase company graph · Sep 21, 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 audits and consulting 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 17,919 IT audits and consulting services worldwide

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IT audits and consulting services worldwide at a glance

As of Sep 21, 2026

28.2%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

10,203

11-50

5,879

51-200

1,350

201-500

286

501-1,000

1,001-5,000

5,001-10,000

10001+

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 audits and consulting services are linked below.
What qualifies: Company records worldwide whose business descriptions match “IT audits and consulting 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 58,818 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 21, 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 audits and consulting services by location

92 lists · largest first

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

How many IT audits and consulting services are there worldwide?

RevenueBase identified 17,919 company matches for IT audits and consulting services worldwide 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?

Ernst & Young tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most IT audits and consulting services?

The United States leads with 3,758 companies, followed by India (1,502) and France (867). Every IT audits and consulting services list by country and city is linked on this page.

Which city has the most IT audits and consulting services?

London leads with 258 company records, followed by Sao Paulo (243) and Paris (213).

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 58,818 professional contacts with verified work emails tracked across these 17,919 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 21, 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.