Company lists · Data refreshed November 2026

Top 25 Ontology development consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 72,640 companies tracked

RevenueBase identified 72,640 company matches for ontology development consulting firms worldwide as of November 2026 and tracks 495,064 professional contacts across them, including 113,450 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for ontology development consulting firms 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 ontology development consulting firms 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

72,640Companies

495,064Contacts tracked

113,450Verified emails

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The 25 largest ontology development consulting firms worldwide

Ranked by team size

Top 25 of 72,640 company matches for ontology development consulting firms 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	Korn Ferry	Exact match	Los Angeles, United StatesHQ recorded Nov 6, 2026	10001+	14,835 contacts →
	Exact match “Korn Ferry is a global consulting firm that powers performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Kearney	Exact match	Chicago, United StatesHQ recorded Nov 6, 2026	5,001-10,000	7,451 contacts →
	Exact match “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	AMS	Exact match	London, GermanyHQ recorded Nov 6, 2026	5,001-10,000	7,133 contacts →
	Exact match “AMS, a market-leading provider of talent acquisition and workforce solutions, is now part of Korn Ferry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Unique	Exact match	Almere, NetherlandsHQ recorded Nov 6, 2026	501-1,000	2,585 contacts →
	Exact match “Je wilt vooruit in je werk.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Baringa	Exact match	London, IL, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	2,311 contacts →
	Exact match “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Arthur D. Little	Exact match	Brussels, BelgiumHQ recorded Nov 6, 2026	1,001-5,000	2,285 contacts →
	Exact match “As people, organizations and societies embrace change at pace, its leaders must anticipate, innovate and transform ever faster.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	BBA Consultants	Exact match	Mont-saint-hilaire, QC, CanadaHQ recorded Nov 6, 2026	1,001-5,000	2,052 contacts →
	Exact match “We help companies with their challenges and transformation by relying on our sharp business acumen, extensive practical experience and vast technological curiosity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Implement Consulting Group	Exact match	Hellerup, DenmarkHQ recorded Nov 6, 2026	1,001-5,000	1,818 contacts →
	Exact match “How can organisations become truly fit for humans and fit for the future?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	FROG	Exact match	San Francisco, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,766 contacts →
	Exact match “frog is the reinvention and experience partner for the eco-digital era.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	P3	Exact match	Stuttgart, GermanyHQ recorded Nov 6, 2026	1,001-5,000	1,580 contacts →
	Exact match “P3 group is an independent, owner-managed technology and management consulting group founded in 1996.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	JLT Group	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	1,465 contacts →
	Exact match “JLT joined Marsh McLennan in April 2019 and is now part of Marsh.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	IPE Global Limited	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	501-1,000	1,452 contacts →
	Exact match “Headquartered in India with six international offices in Cambodia, Ethiopia, Kenya, the Philippines, Germany and the United Kingdom, IPE Global Group offers a range of integrated…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Sigma Software Group	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	1,001-5,000	1,266 contacts →
	Exact match “Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Intellera Consulting	Exact match	Milan, ItalyHQ recorded Nov 6, 2026	1,001-5,000	1,263 contacts →
	Exact match “Intellera Consulting is a consulting company born from the buyout management of the PwC Public administration and Healthcare branch.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	EXL Services LTD	Exact match	n/a	n/a	1,207 contacts →
	Exact match “Established in 1994, we provide a blend of business strategy, marketing services, behavioural change and executive coaching services and techniques to help grow the business of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Capitole	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,170 contacts →
	Exact match “Who are we?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	W3global	Exact match	Frisco, United StatesHQ recorded Nov 6, 2026	501-1,000	1,166 contacts →
	Exact match “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Oc&c Strategy Consultants	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	1,084 contacts →
	Exact match “At OC & C Strategy Consultants we have more than 35 years of experience at unpicking the most complex business challenges with simple, uncommon sense™.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Sollers Consulting	Exact match	Warsaw, PolandHQ recorded Nov 6, 2026	1,001-5,000	984 contacts →
	Exact match “Sollers Consulting assists insurance companies in developing industry-leading operations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Solerys	Exact match	Lyon, FranceHQ recorded Nov 6, 2026	501-1,000	906 contacts →
	Exact match “Solerys est spécialiste de l'évolution et de la transition professionnelle depuis plus de 30 ans.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	MANTU	Exact match	Chêne-bourg, SwitzerlandHQ recorded Nov 6, 2026	10001+	905 contacts →
	Exact match “Mantu is an international consulting and technology company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Workforce Group	Exact match	Lagos, NigeriaHQ recorded Nov 6, 2026	5,001-10,000	892 contacts →
	Exact match “We are consultants to some of Nigeria’s most important and interesting companies delivering value across diverse areas such as Strategy, Learning & Development, Talent Sourcing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Go2b	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	n/a	881 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Conseil Départemental	Exact match	FranceHQ recorded Nov 6, 2026	n/a	877 contacts →
	Exact match “M&C Consultants est une entreprise spécialisée dans le champ du Conseil en gestion et développement de l'entreprise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Senacor Technologies	Exact match	Eschborn, GermanyHQ recorded Nov 6, 2026	1,001-5,000	828 contacts →
	Exact match “Senacor is part of the 25 leading IT-Consulting companies and among the Top 5 of the medium-sized IT-Service providers in Germany and runs 10 offices in Austria, Switzerland…” 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 “ontology development consulting firms”. 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 72,640 ontology development consulting firms worldwide

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Ontology development consulting firms worldwide at a glance

As of Nov 6, 2026

22.9%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

55,760

11-50

13,431

51-200

2,442

201-500

488

501-1,000

136

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 ontology development consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “ontology development consulting firms” 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 113,450 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.

Ontology development consulting firms by location

316 lists · largest first

Every Ontology development 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 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 “ontology development consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ontology development consulting firms are there worldwide?

RevenueBase identified 72,640 company matches for ontology development consulting firms 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?

Korn Ferry tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ontology development consulting firms?

The United States leads with 13,103 companies, followed by Brazil (5,245) and France (3,726). Every ontology development consulting firms list by country and city is linked on this page.

Which city has the most ontology development consulting firms?

Sao Paulo leads with 1533 company records, followed by Paris (1115) and London (1065).

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 113,450 professional contacts with verified work emails tracked across these 72,640 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.