Company lists · Data refreshed September 2026

Top 25 Improvement consulting firms based in France

Name: Improvement consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 26, 2026 8,725 companies tracked

RevenueBase identified 8,725 improvement consulting firms headquartered in France as of September 2026 and tracks 90,335 professional contacts across them, including 31,548 with verified work emails and 3,402 with mobile numbers. Paris is the largest hub.

This list covers improvement consulting firms headquartered in France, 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 26, 2026.

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 26, 2026 86% judged on-target in blind review

8,725Companies

90,335Contacts tracked

31,548Verified emails

3,402Mobile numbers

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The 25 largest improvement consulting firms based in France

Ranked by team size

Top 25 of 8,725 improvement consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 26, 2026. RevenueBase Smart Search rates how each company's information relates to improvement 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	Wavestone	Partial evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 26, 2026	1,001-5,000	6,190 contacts →
	Partial evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 26, 2026
2	Leyton	Partial evidence	Issy-les-moulineaux, FranceHQ checked Sep 26, 2026	1,001-5,000	3,143 contacts →
	Partial evidence “We are an international consulting firm that helps businesses leverage financial incentives to boost their growth and achieve long-lasting performance.” Source: RevenueBase Database · checked Sep 26, 2026
3	Accenture France	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	10001+	1,614 contacts →
	Indirect evidence “Accenture est une entreprise internationale de conseil en management, technologies et externalisation.” Source: RevenueBase Database · checked Sep 26, 2026
4	Abylsen	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	1,001-5,000	1,577 contacts →
	Indirect evidence “In a world that too often follows currents, Abylsen has been opening itself up to new directions.” Source: RevenueBase Database · checked Sep 26, 2026
5	BTP Consultants	Indirect evidence	Montigny-le-bretonneux, FranceHQ checked Sep 26, 2026	201-500	1,066 contacts →
	Indirect evidence “BTP Consultants est un bureau de ̂, et présent à l'échelle nationale depuis plus de.” Source: RevenueBase Database · checked Sep 26, 2026
6	COGEP	Indirect evidence	Saint-doulchard, FranceHQ checked Sep 26, 2026	1,001-5,000	1,051 contacts →
	Indirect evidence “Une vision augmentée du conseil au service de votre réussite.” Source: RevenueBase Database · checked Sep 26, 2026
7	TGS France	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	1,001-5,000	1,051 contacts →
	Indirect evidence “TGS Soregor brings specialists together from seven different areas of expertise in order to offer a comprehensive solution for businesses.” Source: RevenueBase Database · checked Sep 26, 2026
8	Argon & CO	Indirect evidence	Levallois-perret, FranceHQ checked Sep 26, 2026	1,001-5,000	858 contacts →
	Indirect evidence “Argon & Co is a global management consultancy that specialises in operations strategy and transformation.” Source: RevenueBase Database · checked Sep 26, 2026
9	Synchrone FR	Partial evidence	Paris, FranceHQ checked Sep 26, 2026	1,001-5,000	803 contacts →
	Partial evidence “Synchrone apporte son expertise en Consulting, Data Expertise et Digital Experience à ses clients grands comptes.” Source: RevenueBase Database · checked Sep 26, 2026
10	Visiativ	Indirect evidence	Lyon, FranceHQ checked Sep 26, 2026	1,001-5,000	750 contacts →
	Indirect evidence “Through innovation and digitalisation, Visiativ delivers smarter ways of working that help businesses become more agile, efficient and collaborative.” Source: RevenueBase Database · checked Sep 26, 2026
11	Square Management	Indirect evidence	Neuilly Sur Seine, FranceHQ checked Sep 26, 2026	501-1,000	719 contacts →
	Indirect evidence “Square Management est un cabinet de conseil spécialisé en stratégie et organisation qui accompagne ses clients dans l’anticipation, la conception et la réalisation de leurs…” Source: RevenueBase Database · checked Sep 26, 2026
12	TNP Consultants	Partial evidence	Levallois-perret, FranceHQ checked Sep 26, 2026	501-1,000	602 contacts →
	Partial evidence “Created in 2007, TNP is an independent French consulting firm specializing in operational, regulatory and digital transformations.” Source: RevenueBase Database · checked Sep 26, 2026
13	Efeso Management Consultants	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	1,001-5,000	593 contacts →
	Indirect evidence “At EFESO Management Consultants, we partner with industrial leaders to build stronger, more resilient and future ready operations, enabling their organizations to outperform in an…” Source: RevenueBase Database · checked Sep 26, 2026
14	Julhiet Sterwen	Partial evidence	Neuilly Sur Seine, FranceHQ checked Sep 26, 2026	501-1,000	551 contacts →
	Partial evidence “julhiet sterwen is a key player in management, human resources and operational consulting.” Source: RevenueBase Database · checked Sep 26, 2026
15	Norsys	Indirect evidence	Ennevelin, FranceHQ checked Sep 26, 2026	501-1,000	528 contacts →
	Indirect evidence “La vision du groupe norsys : développer une performance globale de l’entreprise.” Source: RevenueBase Database · checked Sep 26, 2026
16	Implid	Indirect evidence	Lyon, FranceHQ checked Sep 26, 2026	501-1,000	502 contacts →
	Indirect evidence “Depuis plus de 40 ans, nos équipes de spécialistes accompagnent nos clients de petites, moyennes et grandes entreprises, dans le pilotage de leurs organisations, la gestion des…” Source: RevenueBase Database · checked Sep 26, 2026
17	GVA	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	51-200	499 contacts →
	Indirect evidence “Créé en 1975, GVA est composé de 80 personnes, pour près de 10 millions de chiffre d’affaires.” Source: RevenueBase Database · checked Sep 26, 2026
18	BPI Group LHH	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	201-500	468 contacts →
	Indirect evidence “READY FOR NEXT - Depuis 50 ans.” Source: RevenueBase Database · checked Sep 26, 2026
19	Oresys	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	201-500	458 contacts →
	Indirect evidence “ORESYS, a major player in the management and organisation consultancy sector, works with corporate clients to support them in their change projects and improve their performance.” Source: RevenueBase Database · checked Sep 26, 2026
20	Devoteam Digital Impulse	Partial evidence	Levallois-perret, FranceHQ checked Sep 26, 2026	201-500	382 contacts →
	Partial evidence “Devoteam Digital Impulse is the Team dedicated to business consulting, which drives its customers in their digital transformation, from strategy to execution.” Source: RevenueBase Database · checked Sep 26, 2026
21	Act-On Group	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 26, 2026	501-1,000	364 contacts →
	Indirect evidence “ACT-ON GROUP is the leading player in #HumanTech.” Source: RevenueBase Database · checked Sep 26, 2026
22	Catalys Conseil	Indirect evidence	Saint-jacques-de-la-lande, FranceHQ checked Sep 26, 2026	201-500	339 contacts →
	Indirect evidence “CATALYS Conseil est un cabinet de conseil en stratégie et management des ressources humaines.” Source: RevenueBase Database · checked Sep 26, 2026
23	ECM Engineering Conception Maintenance	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	201-500	336 contacts →
	Indirect evidence “ECM (Engineering Conception Maintenance) a été créée en 1973 par le groupe CRIT, leader français du service aux entreprises dont le C.A.” Source: RevenueBase Database · checked Sep 26, 2026
24	Bartle	Indirect evidence	Paris, FranceHQ checked Sep 26, 2026	201-500	324 contacts →
	Indirect evidence “Bartle supports business transformation at all strategic, tactic and operational levels.” Source: RevenueBase Database · checked Sep 26, 2026
25	Colombus Consulting	Partial evidence	Paris, FranceHQ checked Sep 26, 2026	201-500	321 contacts →
	Partial evidence “Colombus Consulting is a management consulting firm specialized in business change and complex project management.” Source: RevenueBase Database · checked Sep 26, 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: improvement 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 improvement consulting firms.
Partial evidence: Its own public description names part of improvement consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name improvement 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 8,725 improvement consulting firms based in France

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Improvement consulting firms based in France at a glance

As of Sep 26, 2026

34.9%Verified-email coverage

3.8%Mobile-number coverage

10.4Average contacts per company

1-10Median size (employees)

28.2%Largest-city concentration · Paris

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

7,142

11-50

1,128

51-200

302

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 28.0d

21,1700–30

9,62831–60

58461–90

690–180

160180+

Company record updated

Median 69.0d

00–30

29,06931–60

33,04061–90

23,30590–180

4,921180+

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 improvement 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.
What qualifies: Companies headquartered in France whose own description of what they do matches “improvement 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 improvement 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 improvement consulting firms, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
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, 31,548 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 26, 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.

Improvement consulting firms by metro

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 improvement 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 improvement consulting firms are there based in France?

RevenueBase identified 8,725 improvement consulting firms headquartered in France 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?

Wavestone, headquartered in La Defense, tops this list with the largest team on record.

Which city has the most improvement consulting firms?

Paris leads with 2459 headquartered companies, followed by Lyon (354) and Toulouse (185).

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 31,548 verified decision-maker contacts tracked across these 8,725 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 26, 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.