Company lists · Data refreshed September 2026

Top 25 Software outsourcing companies based in France

Name: Software outsourcing 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 1,704 companies tracked

RevenueBase identified 1,704 software outsourcing companies headquartered in France as of September 2026 and tracks 18,398 professional contacts across them, including 5,527 with verified work emails and 600 with mobile numbers. Paris is the largest hub.

This list covers software 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 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

1,704Companies

18,398Contacts tracked

5,527Verified emails

600Mobile numbers

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The 25 largest software outsourcing companies based in France

Ranked by team size

Top 25 of 1,704 software outsourcing 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 outsourcing 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	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
2	Sully Group	Indirect evidence	Saint-priest, FranceHQ checked Sep 6, 2026	501-1,000	560 contacts →
	“Sully Group : Working together to create a useful and sustainable digital environment > 1 global digital services offering: Business Applications, Mobile Applications…” Source: company website · checked Sep 6, 2026
3	Objectware	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	395 contacts →
	“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: company website · checked Sep 6, 2026
4	Infogene	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 6, 2026	501-1,000	291 contacts →
	“INFOGENE est une ESN spécialisée dans 3 domaines principaux (en AMOA et MOE): DIGITAL: Notre savoir faire : Conseil, architecture logiciel, conception, développement, maintenance…” Source: company website · checked Sep 6, 2026
5	Kaizen Solutions KZS	Indirect evidence	Montbonnot-saint-martin, FranceHQ checked Sep 6, 2026	201-500	261 contacts →
	“Nous sommes une ESN (entreprise de services numériques) spécialisée dans la conception, le développement et la maintenabilité de solutions informatiques, techniques et…” Source: company website · checked Sep 6, 2026
6	Ouidou	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	252 contacts →
	“Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Source: company website · checked Sep 6, 2026
7	Avisto	Partial evidence	Valbonne, FranceHQ checked Sep 6, 2026	201-500	226 contacts →
	“The software development: your passion, our profession.” Source: company website · checked Sep 6, 2026
8	Younup	Indirect evidence	Nantes, FranceHQ checked Sep 6, 2026	201-500	225 contacts →
	“Bienvenue chez Younup : la néo-ESN, agile, humaine, faite de passionnés, avec une ambition simple et forte : remettre l’humain et l’expertise technique au cœur du service IT.” Source: company website · checked Sep 6, 2026
9	Cegedim Outsourcing	Partial evidence	Vélizy-villacoublay, FranceHQ checked Sep 6, 2026	201-500	224 contacts →
	“Cegedim Outsourcing, business unit Cegedim, est spécialisée dans deux domaines d'activité : IT et BPO.” Source: company website · checked Sep 6, 2026
10	Takima	Indirect evidence	Bagneux, FranceHQ checked Sep 6, 2026	51-200	222 contacts →
	“Whether dealing with Opensource, B2B, B2C mobile apps, intranets or HA infrastructures, the same approach remains: Understanding the context, qualifying the use case, determining…” Source: company website · checked Sep 6, 2026
11	Edifixio	Indirect evidence	Bezons, FranceHQ checked Sep 6, 2026	201-500	213 contacts →
	“Edifixio is an IT services company working mainly for large international companies, in the areas of Industry, Retail, Insurance and Services.” Source: company website · checked Sep 6, 2026
12	MARGO	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	174 contacts →
	“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: company website · checked Sep 6, 2026
13	AXYUS	Indirect evidence	Issy-les-moulineaux, FranceHQ checked Sep 6, 2026	51-200	170 contacts →
	“Une SSII avec de vraies valeurs."S'engager au forfait, respecter, les attentes de nos clients, leur budget en favorisant notamment la réutilisation affichée de nos composants…” Source: company website · checked Sep 6, 2026
14	Reactis Group	Indirect evidence	Aix-en-provence Cedex 3, FranceHQ checked Sep 6, 2026	201-500	145 contacts →
	“Nous sommes une ESN qui accompagne les entreprises dans leurs projets IT grâce à des modes d'intervention flexibles : Assistance Technique Unitaire (ATU), Assistance Technique…” Source: company website · checked Sep 6, 2026
15	DHS	Indirect evidence	Bezons, FranceHQ checked Sep 6, 2026	51-200	139 contacts →
	“DHS - 50 Ans d'Excellence Informatique Depuis 1973, DHS se distingue comme un leader dans le domaine informatique, combinant une riche histoire de 50 ans d'expertise et une vision…” Source: company website · checked Sep 6, 2026
16	Groupe KEY Consulting	Indirect evidence	Suresnes, FranceHQ checked Sep 6, 2026	51-200	128 contacts →
	“Notre raison d'être est d'accompagner l'évolution des usages de nos clients (startup, éditeurs, grands comptes) grâce à l'impact de nos ingénieurs IT.” Source: company website · checked Sep 6, 2026
17	SCUB	Indirect evidence	Angoulême, FranceHQ checked Sep 6, 2026	51-200	127 contacts →
	“Scub est une société de service en informatique qui a pour but de fournir du conseil et de développer des applications spécifiques afin de résoudre vos problématiques les plus…” Source: company website · checked Sep 6, 2026
18	IS Technologies	Indirect evidence	Courbevoie Cedex, FranceHQ checked Sep 6, 2026	n/a	127 contacts →
	“IS Technologies est une société de conseils et de services en informatique basée à La Défense.” Source: company website · checked Sep 6, 2026
19	METI	Partial evidence	Larmor-plage, FranceHQ checked Sep 6, 2026	201-500	119 contacts →
	“Software development company specialised in business process management solutions for the retail industry.” Source: company website · checked Sep 6, 2026
20	Team-It	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 6, 2026	51-200	115 contacts →
	“Mais qui sommes-nous?” Source: company website · checked Sep 6, 2026
21	Web-Atrio	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	111 contacts →
	“Bienvenue chez WEB-ATRIO, l’#ESN qui change la donne!” Source: company website · checked Sep 6, 2026
22	Tritux	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	108 contacts →
	“Depuis sa création en 2006, TRITUX a développé une expertise et un savoir faire lui permettant de mener à bien tous ses projets de l’amont à l’aval.” Source: company website · checked Sep 6, 2026
23	Spark-It	Partial evidence	La Défense 5, FranceHQ checked Sep 6, 2026	51-200	105 contacts →
	“Spark-it is an expert in software architecture.” Source: company website · checked Sep 6, 2026
24	Castelis	Indirect evidence	Ivry Sur Seine, FranceHQ checked Sep 6, 2026	51-200	97 contacts →
	“Castelis, c'est l'histoire d'une entreprise en croissance continue.” Source: company website · checked Sep 6, 2026
25	Bharti Soft Tech Pvt. LTD	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	97 contacts →
	“Bharti Soft Tech Pvt.” 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 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 software outsourcing companies.
Partial evidence: Its own public description names part of software outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software 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 1,704 software outsourcing companies based in France

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Software outsourcing companies based in France at a glance

As of Sep 6, 2026

30.0%Verified-email coverage

3.3%Mobile-number coverage

10.8Average contacts per company

1-10Median size (employees)

19.8%Largest-city concentration · Paris

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

1,154

11-50

395

51-200

115

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

5,1560–30

34731–60

161–90

290–180

21180+

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 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 “software 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 software 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 software 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, 5,527 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 outsourcing companies by metro

Software outsourcing companies in Paris337
Software outsourcing companies in Lyon64
Software outsourcing companies in Toulouse42
Software outsourcing companies in Marseille29

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 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 software outsourcing companies are there based in France?

RevenueBase identified 1,704 software 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?

IGA, headquartered in Malakoff, tops this list with the largest team on record.

Which city has the most software outsourcing companies?

Paris leads with 337 headquartered companies, followed by Lyon (64) and Toulouse (42).

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 5,527 verified decision-maker contacts tracked across these 1,704 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.