Company lists · Data refreshed September 2026

Top 25 Advisory and outsourcing services based in France

Name: Advisory and outsourcing services based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 10,226 companies tracked

RevenueBase identified 10,226 advisory and outsourcing services headquartered in France as of September 2026 and tracks 148,279 professional contacts across them, including 52,991 with verified work emails and 4,246 with mobile numbers. Paris is the largest hub.

This list covers advisory and outsourcing services 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 23, 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 23, 2026 86% judged on-target in blind review

10,226Companies

148,279Contacts tracked

52,991Verified emails

4,246Mobile numbers

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The 25 largest advisory and outsourcing services based in France

Ranked by team size

Top 25 of 10,226 advisory and outsourcing services based in France, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to advisory and outsourcing services: 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	Indirect evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 23, 2026	1,001-5,000	6,190 contacts →
	Indirect evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 23, 2026
2	Publicis RE Sources	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	1,001-5,000	3,527 contacts →
	Indirect evidence “Publicis Re:Sources is the backbone of Publicis Groupe, the world’s most valuable agency group.” Source: RevenueBase Database · checked Sep 23, 2026
3	In Extenso	Indirect evidence	Lyon, FranceHQ checked Sep 23, 2026	5,001-10,000	3,278 contacts →
	Indirect evidence “Crée en 1991 In Extenso est l’un des leaders de l’expertise comptable en France.” Source: RevenueBase Database · checked Sep 23, 2026
4	Leyton	Indirect evidence	Issy-les-moulineaux, FranceHQ checked Sep 23, 2026	1,001-5,000	3,143 contacts →
	Indirect 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 23, 2026
5	UFF	Indirect evidence	Bois-colombes, FranceHQ checked Sep 23, 2026	501-1,000	2,390 contacts →
	Indirect evidence “Particuliers, chefs d'entreprise, TPE/PME.” Source: RevenueBase Database · checked Sep 23, 2026
6	GFI World	Indirect evidence	Saint-ouen, FranceHQ checked Sep 23, 2026	10001+	2,169 contacts →
	Indirect evidence “Gfi became Inetum in 2020.” Source: RevenueBase Database · checked Sep 23, 2026
7	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 23, 2026	1,001-5,000	1,735 contacts →
	Indirect evidence “Infotel accompagne les directions Informatiques et Métiers des grandes entreprises depuis 45 ans (Airbus, Air France, PSA, BNP Paribas, Banque de France ou encore BPCE, etc.).” Source: RevenueBase Database · checked Sep 23, 2026
8	Fiteco	Indirect evidence	Changé, FranceHQ checked Sep 23, 2026	1,001-5,000	1,634 contacts →
	Indirect evidence “Nos solutions personnalisées pour vous et votre #entreprise : Vous reprenez ou créez une entreprise?#Entrepreneur Vous souhaitez être épaulé dans les tâches administratives et la…” Source: RevenueBase Database · checked Sep 23, 2026
9	Accenture France	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	10001+	1,614 contacts →
	Indirect evidence “Accenture est une entreprise internationale de conseil en management, technologies et externalisation.” Source: RevenueBase Database · checked Sep 23, 2026
10	COGEP	Indirect evidence	Saint-doulchard, FranceHQ checked Sep 23, 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 23, 2026
11	TGS France	Indirect evidence	Paris, FranceHQ checked Sep 23, 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 23, 2026
12	B2s Business Support Services	Indirect evidence	Gennevilliers Cedex, FranceHQ checked Sep 23, 2026	10001+	978 contacts →
	Indirect evidence “Expert de la relation client depuis 1996, b2s est le N°1 de l’externalisation de votre relation client en qualité délivrée.” Source: RevenueBase Database · checked Sep 23, 2026
13	Eight Advisory	Partial evidence	Paris, FranceHQ checked Sep 23, 2026	501-1,000	895 contacts →
	Partial evidence “Eight Advisory, Europe's leading independent advisory firm specialising in financial, operational and strategy consulting, is involved in transactions, restructuring and…” Source: RevenueBase Database · checked Sep 23, 2026
14	Adecco Outsourcing	Partial evidence	Paris, FranceHQ checked Sep 23, 2026	501-1,000	887 contacts →
	Partial evidence “Adecco Outsourcing propose aux entreprises des solutions d’externalisation dédiées à l’Accueil en entreprise, à l’Evènementiel, au Marketing terrain et aux activités de production…” Source: RevenueBase Database · checked Sep 23, 2026
15	Orcom Cabinet D'expertise Comptable, Audit ET Conseil	Indirect evidence	Orléans, FranceHQ checked Sep 23, 2026	1,001-5,000	800 contacts →
	Indirect evidence “Pour ORCOM, le conseil est un état d'esprit.” Source: RevenueBase Database · checked Sep 23, 2026
16	PKF Arsilon	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	501-1,000	765 contacts →
	Indirect evidence “Ensemble, changeons la donne.” Source: RevenueBase Database · checked Sep 23, 2026
17	Visiativ	Indirect evidence	Lyon, FranceHQ checked Sep 23, 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 23, 2026
18	Vivetic	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	1,001-5,000	737 contacts →
	Indirect evidence “Acteur historique de l’externalisation de la Relation Client, du Back-Office (BPO) et des Services Numériques & Informatiques, implanté en France et dans l’Océan Indien, à…” Source: RevenueBase Database · checked Sep 23, 2026
19	Square Management	Indirect evidence	Neuilly Sur Seine, FranceHQ checked Sep 23, 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 23, 2026
20	CF	Indirect evidence	Bordeaux, FranceHQ checked Sep 23, 2026	1,001-5,000	674 contacts →
	Indirect evidence “Diriger une entreprise aujourd’hui, c’est faire face à des décisions de plus en plus complexes.” Source: RevenueBase Database · checked Sep 23, 2026
21	Groupe Cogedis	Indirect evidence	Saint Thonan, FranceHQ checked Sep 23, 2026	501-1,000	654 contacts →
	Indirect evidence “Le Groupe Cogedis est un groupe multi-expertises avec plus de 25 compétences et sociétés partenaires au service des professionnels et des agriculteurs.” Source: RevenueBase Database · checked Sep 23, 2026
22	Julhiet Sterwen	Indirect evidence	Neuilly Sur Seine, FranceHQ checked Sep 23, 2026	501-1,000	551 contacts →
	Indirect evidence “julhiet sterwen is a key player in management, human resources and operational consulting.” Source: RevenueBase Database · checked Sep 23, 2026
23	Norsys	Indirect evidence	Ennevelin, FranceHQ checked Sep 23, 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 23, 2026
24	GVA	Indirect evidence	Paris, FranceHQ checked Sep 23, 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 23, 2026
25	EUREX	Indirect evidence	Annecy, FranceHQ checked Sep 23, 2026	501-1,000	496 contacts →
	Indirect evidence “Groupe d’expertise comptable, de conseil et d’audit, EUREX apporte aux chefs d’entreprise une offre de services complète et des solutions adaptées à chaque situation particulière.” Source: RevenueBase Database · checked Sep 23, 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: advisory and outsourcing services. 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 advisory and outsourcing services.
Partial evidence: Its own public description names part of advisory and outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory and outsourcing services. 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 10,226 advisory and outsourcing services based in France

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Advisory and outsourcing services based in France at a glance

As of Sep 23, 2026

35.7%Verified-email coverage

2.9%Mobile-number coverage

14.5Average contacts per company

1-10Median size (employees)

25.1%Largest-city concentration · Paris

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

7,555

11-50

1,925

51-200

465

201-500

136

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 25.0d

40,2690–30

11,87031–60

69161–90

1290–180

177180+

Company record updated

Median 77.0d

00–30

55,24831–60

58,28561–90

27,55590–180

7,272180+

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 advisory and outsourcing services, 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 “advisory and outsourcing services”. 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 advisory and outsourcing services), 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 advisory and outsourcing services, 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, 52,991 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 23, 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.

Advisory and outsourcing services by metro

Advisory and outsourcing services in Paris2571
Advisory and outsourcing services in Lyon344
Advisory and outsourcing services in Toulouse210
Advisory and outsourcing services in Bordeaux146
Advisory and outsourcing services in Marseille141
Advisory and outsourcing services in Nantes116
Advisory and outsourcing services in Montpellier83
Advisory and outsourcing services in Rennes81
Advisory and outsourcing services in Lille79
Advisory and outsourcing services in Strasbourg79
Advisory and outsourcing services in Courbevoie60
Advisory and outsourcing services in Neuilly-Sur-Seine59
Advisory and outsourcing services in Nice59
Advisory and outsourcing services in Boulogne-Billancourt57
Advisory and outsourcing services in Versailles54
Advisory and outsourcing services in Aix En Provence46
Advisory and outsourcing services in Aix-En-Provence45
Advisory and outsourcing services in Angers45
Advisory and outsourcing services in Annecy41
Advisory and outsourcing services in Levallois-Perret40
Advisory and outsourcing services in Boulogne Billancourt39
Advisory and outsourcing services in Villeurbanne37
Advisory and outsourcing services in Rouen36
Advisory and outsourcing services in Reims35
Advisory and outsourcing services in Metz34
Advisory and outsourcing services in Tours34
Advisory and outsourcing services in Grenoble33
Advisory and outsourcing services in Perpignan32
Advisory and outsourcing services in Caen31
Advisory and outsourcing services in Neuilly Sur Seine28
Advisory and outsourcing services in Clermont-Ferrand27
Advisory and outsourcing services in Puteaux27

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 advisory and outsourcing services, 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 advisory and outsourcing services are there based in France?

RevenueBase identified 10,226 advisory and outsourcing services 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 advisory and outsourcing services?

Paris leads with 2571 headquartered companies, followed by Lyon (344) and Toulouse (210).

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 52,991 verified decision-maker contacts tracked across these 10,226 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 23, 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.