Company lists · Data refreshed September 2026
Top 25 Professional services outsourcing companies based in France
RevenueBase identified 338 professional services outsourcing companies headquartered in France as of September 2026 and tracks 4,800 professional contacts across them, including 1,619 with verified work emails. Paris is the largest hub.
This list covers professional services outsourcing companies 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 29, 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.
The 25 largest professional services outsourcing companies based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,051 contacts → | ||||
Indirect evidence “Une vision augmentée du conseil au service de votre réussite.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 237 contacts → | ||||
Indirect evidence “MEOGROUP combine conseil, renfort opérationnel et développement des compétences pour accompagner les transformations de ses clients et renforcer durablement leur compétitivité.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 210 contacts → | ||||
Indirect evidence “Acom Expertise s’engage aux côtés de ses équipes et des dirigeants et dirigeantes d’entreprises pour transformer chaque projet en succès durable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 188 contacts → | ||||
Indirect evidence “Advolis, a Paris based firm that specialises in auditing and business consulting and Orfis, a Lyon firm that provides auditing, consultancy and corporate services, merged in April…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 142 contacts → | ||||
Indirect evidence “Nous proposons en externalisation toutes les compétences nécessaires à la gestion administrative et à l'administration des entreprises dans les conditions optimales de performance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 136 contacts → | ||||
Indirect evidence “Insitu est spécialisée dans le Temps Partagé Premium.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 82 contacts → | ||||
Indirect evidence “EDIIS propose un ensemble de services d'externalisation des process métiers autour du document et de la relation client.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 81 contacts → | ||||
Indirect evidence “Le Groupe Gorioux propose une offre globale de services et de conseils dans les domaines de l’audit, du conseil, de l’expertise comptable, du droit des affaires, de la gestion…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 76 contacts → | ||||
Indirect evidence “HLI enables business transformation for our customers through innovative solutions to improve their performance and revenue- 30 Years of experience - 130 people through several…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 74 contacts → | ||||
Indirect evidence “YourBO is a company specializing in outsourced management Back-Office since 2012.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 72 contacts → | ||||
Indirect evidence “3H18 est leader en France dans l'externalisation des fonctions d'assistants et de managers en temps partagé et transition.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 59 contacts → | ||||
Indirect evidence “L'expertise comptable demeure le savoir-faire originel du Groupe Vingt-Six.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 49 contacts → | ||||
Indirect evidence “La Gestion sereine de votre Business Des experts à votre disposition et à votre écoute Notre expertise : Paie / Social / Administratif / Financier Conseil, Audit, Externalisation…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 47 contacts → | ||||
Indirect evidence “Purchases are strategic for each company, the stakes are high in a world where technology is changing, exchanges are globalised, operational excellence and reactivity are…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 29 contacts → | ||||
Indirect evidence “Accompagnateur et partenaire du développement des entreprises, nous mettons tout en œuvre pour améliorer la performance de votre entreprise et accroître l’efficacité de sa gestion.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 25 contacts → | ||||
Indirect evidence “ISP Group est le spécialiste de l'externalisation achats et tâches administratives depuis sa création en 2003.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 23 contacts → | ||||
Indirect evidence “Jeune société en pleine dynamique de croissance, nous sommes soucieux d'accompagner nos clients tout au long de leurs projets informatiques, que ce soit leur gestation, leur…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 20 contacts → | ||||
Indirect evidence “G.B.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 19 contacts → | ||||
Indirect evidence “Nos offres de portage commercial, sourcing, MSP & conseil achat permettent aux grands groupes d'élargir leur panel de compétences, de rationaliser et réduire le coût de traitement…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 17 contacts → | ||||
Indirect evidence “Parce que nous aimons le cuir qui se patine et les traces du temps qui passe, mais que nous avons aussi un côté geek.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 17 contacts → | ||||
Indirect evidence “Le cabinet Partexia vous accompagne tout au long de la vie de votre entreprise à travers différents pôles de compétences - Comptabilité & fiscalité - Audit - Conseil - Juridique -…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 16 contacts → | ||||
Indirect evidence “Essentiellement tournée vers les entreprises de taille moyenne (y compris cotées en bourse), notre équipe, grâce à ses compétences pluridisciplinaires, a pour vocation de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 15 contacts → | ||||
Indirect evidence “Services Administratifs et Financiers Externalisés” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 contacts → | ||||
Indirect evidence “Vous êtes débordé!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: professional services outsourcing companies. 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 professional services outsourcing companies.
- Partial evidence
- Its own public description names part of professional services outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name professional services outsourcing companies. 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 338 professional services outsourcing companies based in France
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Professional services outsourcing companies based in France at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 338 companies.
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 professional services outsourcing companies, 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 “professional services outsourcing companies”. 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 professional services outsourcing companies), 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 professional services outsourcing companies, 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, 1,619 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 29, 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.
Professional services outsourcing companies 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 professional services outsourcing companies, 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 professional services outsourcing companies are there based in France?
RevenueBase identified 338 professional services outsourcing companies 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?
COGEP, headquartered in Saint-Doulchard, tops this list with the largest team on record.
Which city has the most professional services outsourcing companies?
Paris leads with 68 headquartered companies, followed by Lyon (12) and Marseille (6).
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 1,619 verified decision-maker contacts tracked across these 338 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 29, 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.
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