Company lists · Data refreshed September 2026

Top 25 Vendor consulting firms worldwide

Name: Vendor consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 10,896 companies tracked

RevenueBase identified 10,896 vendor consulting firms worldwide as of September 2026 and tracks 72,016 professional contacts across them, including 14,669 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers vendor consulting firms 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 21, 2026. Country and city lists for vendor consulting firms 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 21, 2026 86% judged on-target in blind review

10,896Companies

72,016Contacts tracked

14,669Verified emails

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The 25 largest vendor consulting firms worldwide

Ranked by team size

Top 25 of 10,896 vendor consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to vendor consulting firms: 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	W3global	Strong evidence	Frisco, TX, United StatesHQ checked Sep 21, 2026	501-1,000	1,149 contacts →
	Strong evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 21, 2026
2	Go2b	Indirect evidence	São Paulo, BrazilHQ checked Sep 21, 2026	n/a	815 contacts →
	Indirect evidence “Criada em 2013, a Goiás Business nasceu para fornecer consultoria comercial para uma grande empresa de soluções em recursos humanos, tendo como resultado a geração de mais de 1.8…” Source: RevenueBase Database · checked Sep 21, 2026
3	William E. Connor & Associates LTD	Indirect evidence	Kowloon Bay, Hong KongHQ checked Sep 21, 2026	1,001-5,000	793 contacts →
	Indirect evidence “Connor is a merchandise sourcing service with over 72 years of experience serving more than 60 USA, UK, North and South American, European, Asian, South African and Australian…” Source: RevenueBase Database · checked Sep 21, 2026
4	デロイトトーマツコンサルティング(合同)	Strong evidence	千代田区, JapanHQ checked Sep 21, 2026	501-1,000	696 contacts →
	Strong evidence “is a management consulting company based out of, Japan.” Source: RevenueBase Database · checked Sep 21, 2026
5	Technology Control Company شركة تحكم التقنية	Strong evidence	Riyadh, Saudi ArabiaHQ checked Sep 21, 2026	501-1,000	433 contacts →
	Strong evidence “Technology Control Company Founded in 2008 and headquartered in Riyadh, Saudi Arabia - Technology Control Company provides its’ clients a complete consulting expertise.We offer a…” Source: RevenueBase Database · checked Sep 21, 2026
6	3eriza	Indirect evidence	Surquillo, PeruHQ checked Sep 21, 2026	1,001-5,000	391 contacts →
	Indirect evidence “3eriza es una consultora especializada en el diseño, implementación y optimización de la provisión de servicios a empresas, brindando soporte en dos frentes: Asesorando a empresas…” Source: RevenueBase Database · checked Sep 21, 2026
7	Northern Lights Technology Development	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	501-1,000	368 contacts →
	Indirect evidence “At Northern Lights, we take pride in providing exceptional services using our dedicated team of employees, not contractors.” Source: RevenueBase Database · checked Sep 21, 2026
8	Assyst	Strong evidence	Sterling, VA, United StatesHQ checked Sep 21, 2026	51-200	284 contacts →
	Strong evidence “ASSYST is an agile, CMMC-certified, CMMI Maturity Level 3, and ISO 9001, ISO and ISO 27001-certified technology and consulting firm that helps government agencies modernize…” Source: RevenueBase Database · checked Sep 21, 2026
9	Innovationteam	Strong evidence	Riyadh, Saudi ArabiaHQ checked Sep 21, 2026	201-500	274 contacts →
	Strong evidence “InnovationTeam is an IT consulting company that provides a comprehensive range of specialized professional solutions and services to businesses.” Source: RevenueBase Database · checked Sep 21, 2026
10	Inspace	Strong evidence	Chennai, IndiaHQ checked Sep 21, 2026	201-500	269 contacts →
	Strong evidence “Inspace a technology consulting company manages Medium/Large sized Enterprises across India where IT investments need clarity and optimal utilization.” Source: RevenueBase Database · checked Sep 21, 2026
11	Brandt Business Services	Indirect evidence	Kuala Lumpur, MalaysiaHQ checked Sep 21, 2026	501-1,000	268 contacts →
	Indirect evidence “Built on the company’s core expertise, Brandt helps organizations achieve enhanced service levels through transforming the approach, performance, quality and efficiency of the…” Source: RevenueBase Database · checked Sep 21, 2026
12	Cargaison Express	Indirect evidence	Mohali, IndiaHQ checked Sep 21, 2026	201-500	254 contacts →
	Indirect evidence “At Cargaison Express, we're not just an outsourcing company but your dedicated partners in scaling your business to new heights.” Source: RevenueBase Database · checked Sep 21, 2026
13	Atos Information Technology Gmbh	Strong evidence	Düsseldorf, GermanyHQ checked Sep 21, 2026	10001+	251 contacts →
	Strong evidence “Atos Information Technology GmbH is a management consulting company” Source: RevenueBase Database · checked Sep 21, 2026
14	Bridge Partners	Strong evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	201-500	247 contacts →
	Strong evidence “Bridge Partners is a people-focused, customer-driven consulting firm that helps organizations transform to drive revenue growth, adapt to change, and create customer value.” Source: RevenueBase Database · checked Sep 21, 2026
15	Scottmadden, INC	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 21, 2026	201-500	244 contacts →
	Strong evidence “ScottMadden is a management consulting firm that does what it takes to get the job done right.” Source: RevenueBase Database · checked Sep 21, 2026
16	Professional Advantage	Indirect evidence	124 Walker Street, AustraliaHQ checked Sep 21, 2026	201-500	234 contacts →
	Indirect evidence “Helping organisations achieve more with technology.” Source: RevenueBase Database · checked Sep 21, 2026
17	LCG	Strong evidence	Lisbon, PortugalHQ checked Sep 21, 2026	201-500	230 contacts →
	Strong evidence “LCG provides consulting services, using their multidisciplinary skills in the areas of strategic and operational management, information systems, management support, business…” Source: RevenueBase Database · checked Sep 21, 2026
18	Thinksynq Solutions	Indirect evidence	Chennai, IndiaHQ checked Sep 21, 2026	201-500	229 contacts →
	Indirect evidence “Growth is exciting in presentations.” Source: RevenueBase Database · checked Sep 21, 2026
19	By Seven	Indirect evidence	Joinville, BrazilHQ checked Sep 21, 2026	51-200	228 contacts →
	Indirect evidence “Muito mais que consultoria em tecnologia, agregamos valor ao seu negócio!” Source: RevenueBase Database · checked Sep 21, 2026
20	Greyson	Indirect evidence	Bratislava, SlovakiaHQ checked Sep 21, 2026	201-500	226 contacts →
	Indirect evidence “We help our clients analyze markets and competition, evaluate efficiency of their processes/organization and understand latest trends & technology.” Source: RevenueBase Database · checked Sep 21, 2026
21	Funcional	Indirect evidence	Cascavel, BrazilHQ checked Sep 21, 2026	51-200	222 contacts →
	Indirect evidence “Com o propósito de transformar, potencializar e perpetuar negócios, apoiamos as empresas na gestão empresarial de resultado.” Source: RevenueBase Database · checked Sep 21, 2026
22	Mosaic Consulting Group	Strong evidence	Nashville, TN, United StatesHQ checked Sep 21, 2026	201-500	221 contacts →
	Strong evidence “Mosaic Consulting Group brings together deep expertise, proven best practices, and hands-on experience from hundreds of client engagements to help organizations transform how they…” Source: RevenueBase Database · checked Sep 21, 2026
23	Peersgroup	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	215 contacts →
	Indirect evidence “PeersGroup est un cabinet de conseil en Management spécialisé en Performance Opérationnelle.” Source: RevenueBase Database · checked Sep 21, 2026
24	Amaris Consulting	Strong evidence	Geneva, SwitzerlandHQ checked Sep 21, 2026	5,001-10,000	208 contacts →
	Strong evidence “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Source: RevenueBase Database · checked Sep 21, 2026
25	Lider IT Consulting	Strong evidence	Llanera, SpainHQ checked Sep 21, 2026	201-500	204 contacts →
	Strong evidence “En LIDER IT Consulting llevamos más de 40 años ayudando a nuestros clientes a mejorar la gestión mediante la consultoría, el desarrollo y la implantación de soluciones integradas.” Source: RevenueBase Database · checked Sep 21, 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: vendor consulting firms. 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 vendor consulting firms.
Partial evidence: Its own public description names part of vendor consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vendor consulting firms. 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 10,896 vendor consulting firms worldwide

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Vendor consulting firms worldwide at a glance

As of Sep 21, 2026

20.4%Verified-email coverage

6.6Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

7,987

11-50

2,211

51-200

513

201-500

119

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among vendor consulting firms, 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: Every country. Country and city lists for vendor consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “vendor consulting firms”. 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 vendor consulting firms), 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 vendor consulting firms, 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, 14,669 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 21, 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.

Vendor consulting firms by location

53 lists · largest first

Every Vendor consulting firms 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 vendor consulting firms, 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 vendor consulting firms are there worldwide?

RevenueBase identified 10,896 vendor consulting firms 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?

W3global, headquartered in Frisco, tops this list with the largest team on record.

Which country has the most vendor consulting firms?

The United States leads with 3,065 companies, followed by Brazil (582) and India (547). Every vendor consulting firms list by country and city is linked on this page.

Which city has the most vendor consulting firms?

Sao Paulo leads with 165 headquartered companies, followed by London (135) and New York (117).

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 14,669 verified decision-maker contacts tracked across these 10,896 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 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 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.