Company lists · Data refreshed September 2026
Top 25 IT services firms based in France
RevenueBase identified 3,217 IT services firms headquartered in France as of September 2026 and tracks 59,616 professional contacts across them, including 13,079 with verified work emails and 1,492 with mobile numbers. Paris is the largest hub.
This list covers IT services 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 27, 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 IT services firms based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 17,044 contacts → | ||||
Indirect evidence “ALTEN is committed to meeting the expectations of its stakeholders and anticipating their requirements in the fields of innovation, R&D, and technological information systems.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,169 contacts → | ||||
Indirect evidence “Gfi became Inetum in 2020.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,519 contacts → | ||||
Indirect evidence “Société d'infogérance” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,459 contacts → | ||||
Strong evidence “SOLUTEC: An IT Services Company SOLUTEC is an IT services company specialized in engineering, consulting and services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 844 contacts → | ||||
Indirect evidence “You will be part of ACENSI network: 1650 co-workers involved in IS transformation projects at our clients through our multisectoral expertise.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 816 contacts → | ||||
Indirect evidence “Ce qui nous différencie de nos concurrents?” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 668 contacts → | ||||
Strong evidence “Coexya has been an independent entity since October 1st 2020 when it was acquired by the operational management team with the support of the European private equity group Argos…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 551 contacts → | ||||
Strong evidence “Fondée en 1985, Tenexa est une Entreprise de services du numérique (ESN), Le groupe Tenexa est composé de deux filiales (Infodis IT, & Prolival) et se positionne résolument vers…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 532 contacts → | ||||
Strong evidence “Filiale du Groupe SYNERGIE, DCS SYNERGIE GROUP capitalise sur son histoire pour accompagner chaque jour les enjeux IT de ses clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 395 contacts → | ||||
Strong evidence “Objectware Group is an IT Services Company (or ESN: Entreprise de Services du Numérique), founded in and dedicated to consulting and IT system engineering.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 394 contacts → | ||||
Indirect evidence “Ataway is a global consulting company supporting organizations across industries, with over 25 years of experience and presence in more than 23 countries.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 378 contacts → | ||||
Indirect evidence “Conserto, jeune société innovante et dynamique, propose des prestations de conseil et d’expertise informatique : Nous avons 3 domaines d'expertise - Cloud - Digital - Embedded Et…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 342 contacts → | ||||
Indirect evidence “For over 20 years, ITS Group has supported companies in their digital transformation projects thanks to the strength of its specialized areas of expertise.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 291 contacts → | ||||
Indirect evidence “INFOGENE est une ESN spécialisée dans 3 domaines principaux (en AMOA et MOE): DIGITAL: Notre savoir faire : Conseil, architecture logiciel, conception, développement, maintenance…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 290 contacts → | ||||
Indirect evidence “SEA TPI est une ESN de 450 personnes spécialisée dans les domaines des opérations informatiques.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 279 contacts → | ||||
Indirect evidence “Chez Cyllene, on couvre le spectre complet de votre besoin en termes de : Conseils 🧬 Définition d’architectures Hébergement & Services managés Cybersécurité & Formations…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 213 contacts → | ||||
Strong evidence “Edifixio is an IT services company working mainly for large international companies, in the areas of Industry, Retail, Insurance and Services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 182 contacts → | ||||
Indirect evidence “Implantée à Reims depuis 1997, la société HEXANET est constituée d'une équipe de professionnels, ayant une expérience reconnue dans le domaine d'internet, des réseaux et des…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 182 contacts → | ||||
Strong evidence “With 5,400 experts, the NEURONES Group specializes in Consulting (Management, Organization and Digital) and IT Services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 179 contacts → | ||||
Strong evidence “DEODIS est un Groupe de sociétés de conseil, spécialisé dans la gestion des services IT et la transformation numérique des organisations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 178 contacts → | ||||
Indirect evidence “la croisée de l'informatique, des télécommunications et de la bureautique, l'entreprise OMR occupe une position unique sur le Grand Ouest, avec un siège social au sud de Nantes et…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 174 contacts → | ||||
Strong evidence “More than a simple IT consulting group, MARGO is an alchemy of talents with constantly enriched expertise, always encouraged to be dynamic and to flourish.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 170 contacts → | ||||
Indirect evidence “Concevoir, rationaliser et optimiser votre SI avec de véritables garanties, voilà les ambitions du Permis Informatique.” Source: RevenueBase Database · checked Sep 27, 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: IT services 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 IT services firms.
- Partial evidence
- Its own public description names part of IT services firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT services 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 3,217 IT services firms based in France
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IT services firms based in France at a glance
As of Sep 27, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 29.0dCompany record updated
Median 86.0dHow 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 IT services 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 “IT services 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 IT services 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 IT services 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, 13,079 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 27, 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.
IT services 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 IT services 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 IT services firms are there based in France?
RevenueBase identified 3,217 IT services 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?
ALTEN, headquartered in Boulogne-Billancourt Cedex, tops this list with the largest team on record.
Which city has the most IT services firms?
Paris leads with 551 headquartered companies, followed by Lyon (74) and Toulouse (54).
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 13,079 verified decision-maker contacts tracked across these 3,217 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 27, 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.