Company lists · Data refreshed September 2026

Top 25 Software engineering companies based in France

Name: Software engineering companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 3,286 companies tracked

RevenueBase identified 3,286 software engineering companies headquartered in France as of September 2026 and tracks 105,234 professional contacts across them, including 29,598 with verified work emails and 3,297 with mobile numbers. Paris is the largest hub.

This list covers software engineering 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 6, 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 6, 2026 86% judged on-target in blind review

3,286Companies

105,234Contacts tracked

29,598Verified emails

3,297Mobile numbers

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The 25 largest software engineering companies based in France

Ranked by team size

Top 25 of 3,286 software engineering companies based in France, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software engineering companies: 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	ALTEN	Indirect evidence	Boulogne-billancourt Cedex, FranceHQ checked Sep 6, 2026	10001+	17,044 contacts →
	“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: company website · checked Sep 6, 2026
2	Groupe SII	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	10001+	4,928 contacts →
	“Le groupe SII est une société d’ingénierie et de conseil en technologies (ICT) et une entreprise de services numériques (ESN) créée en 1979 par Bernard HUVÉ, ingénieur de…” Source: company website · checked Sep 6, 2026
3	AUBAY	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 6, 2026	5,001-10,000	2,670 contacts →
	“Present in 7 countries in Europe, Aubay has more than 7800 employees and has generated revenues of € 513,5 million in 2022, with year on year growth consistently.” Source: company website · checked Sep 6, 2026
4	GFI World	Indirect evidence	Saint-ouen, FranceHQ checked Sep 6, 2026	10001+	2,169 contacts →
	“Gfi became Inetum in 2020.” Source: company website · checked Sep 6, 2026
5	Keyrus	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	1,001-5,000	1,964 contacts →
	“At Keyrus, we help organizations move from experimental AI to industrialized AI, from isolated agents to orchestrated systems, and from insight to execution.” Source: company website · checked Sep 6, 2026
6	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 6, 2026	1,001-5,000	1,735 contacts →
	“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: company website · checked Sep 6, 2026
7	Apside	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 6, 2026	1,001-5,000	1,537 contacts →
	“We are true to our word Expertise, trust, careers For 36 years, Apside has cooperated with the largest French and European groups on their IT and scientific projects.” Source: company website · checked Sep 6, 2026
8	IGA	Indirect evidence	Malakoff, FranceHQ checked Sep 6, 2026	n/a	1,530 contacts →
	“Métiers - Edition de composants/modules logiciels pour les métiers de l’assurance, du voyage et du négoce- Création de solutions spécifiques pour le compte des clients- Suivi et…” Source: company website · checked Sep 6, 2026
9	Solutec	Partial evidence	Villeurbanne, FranceHQ checked Sep 6, 2026	1,001-5,000	1,459 contacts →
	“SOLUTEC: An IT Services Company SOLUTEC is an IT services company specialized in engineering, consulting and services.” Source: company website · checked Sep 6, 2026
10	Prodware	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	1,001-5,000	1,394 contacts →
	“At Prodware, we believe that Trust, Audacity, and Passion are the driving forces behind meaningful digital transformation.” Source: company website · checked Sep 6, 2026
11	SMILE	Indirect evidence	Asnières Sur Seine, FranceHQ checked Sep 6, 2026	1,001-5,000	1,352 contacts →
	“We are Technology experts & Business partners.” Source: company website · checked Sep 6, 2026
12	SFEIR	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 6, 2026	501-1,000	904 contacts →
	“SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Source: company website · checked Sep 6, 2026
13	Acensi	Indirect evidence	Courbevoie, FranceHQ checked Sep 6, 2026	1,001-5,000	844 contacts →
	“You will be part of ACENSI network: 1650 co-workers involved in IS transformation projects at our clients through our multisectoral expertise.” Source: company website · checked Sep 6, 2026
14	Viveris	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 6, 2026	1,001-5,000	833 contacts →
	“Viveris is a consulting and engineering company with two main activities - IT consulting.” Source: company website · checked Sep 6, 2026
15	HN Services	Indirect evidence	Charenton Le Pont, FranceHQ checked Sep 6, 2026	1,001-5,000	816 contacts →
	“Ce qui nous différencie de nos concurrents?” Source: company website · checked Sep 6, 2026
16	Groupe Intm	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	1,001-5,000	714 contacts →
	“Le Groupe INTM est une société de conseil et de services en ingénierie numérique, dont le positionnement s'inscrit depuis plusieurs années dans une volonté de proximité, d'écoute…” Source: company website · checked Sep 6, 2026
17	Softeam	Indirect evidence	Courbevoie, FranceHQ checked Sep 6, 2026	1,001-5,000	705 contacts →
	“Softeam is the Consulting and Services brand of Docaposte.” Source: company website · checked Sep 6, 2026
18	Catamania	Indirect evidence	Saint-herblain, FranceHQ checked Sep 6, 2026	1,001-5,000	696 contacts →
	“Depuis plus de 25 ans, Catamania fait partie des Entreprises de Services du Numérique dynamiques et innovantes qui s’appuie sur ses expertises métiers, techniques et…” Source: company website · checked Sep 6, 2026
19	Coexya	Indirect evidence	Saint-didier-au-mont-d'or, FranceHQ checked Sep 6, 2026	501-1,000	668 contacts →
	“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: company website · checked Sep 6, 2026
20	Focus Corporation	Partial evidence	Europe France, FranceHQ checked Sep 6, 2026	201-500	648 contacts →
	“Focus is an international group specializing in Software development and IT services.” Source: company website · checked Sep 6, 2026
21	Intalio	Indirect evidence	Fontenay-sous-bois, FranceHQ checked Sep 6, 2026	501-1,000	586 contacts →
	“With more than 30 years of expertise in the industry, Intalio -(previously known as Everteam Global Services) aims at accelerating an organization’s business evolution by offering…” Source: company website · checked Sep 6, 2026
22	Klanik	Partial evidence	Marseille, FranceHQ checked Sep 6, 2026	501-1,000	585 contacts →
	“KLANIK is a consulting company specialized in IT Engineering which accompanies its partners in their digital and technological projects.” Source: company website · checked Sep 6, 2026
23	CELAD	Strong evidence	Toulouse, FranceHQ checked Sep 6, 2026	1,001-5,000	570 contacts →
	“Consulting and Engineering in innovative technology Celad is a global software engineering company with over 1200 engineers.” Source: company website · checked Sep 6, 2026
24	DCS Easyware	Indirect evidence	Lyon, FranceHQ checked Sep 6, 2026	1,001-5,000	532 contacts →
	“Filiale du Groupe SYNERGIE, DCS SYNERGIE GROUP capitalise sur son histoire pour accompagner chaque jour les enjeux IT de ses clients.” Source: company website · checked Sep 6, 2026
25	Zenika	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	430 contacts →
	“Zenika is an IT consulting firm with 550 employees that helps companies with their digital transformation.” Source: company website · checked Sep 6, 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: software engineering 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 software engineering companies.
Partial evidence: Its own public description names part of software engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software engineering 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 3,286 software engineering companies based in France

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Software engineering companies based in France at a glance

As of Sep 6, 2026

28.1%Verified-email coverage

3.1%Mobile-number coverage

32.0Average contacts per company

1-10Median size (employees)

22.8%Largest-city concentration · Paris

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

1,933

11-50

888

51-200

319

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

27,6410–30

1,81431–60

561–90

490–180

134180+

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 software engineering 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 “software engineering 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 software engineering 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 software engineering 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, 29,598 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 6, 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.

Software engineering 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 software engineering 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 software engineering companies are there based in France?

RevenueBase identified 3,286 software engineering 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?

ALTEN, headquartered in Boulogne-Billancourt Cedex, tops this list with the largest team on record.

Which city has the most software engineering companies?

Paris leads with 749 headquartered companies, followed by Lyon (106) and Toulouse (66).

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 29,598 verified decision-maker contacts tracked across these 3,286 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 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 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.