Company lists · Data refreshed September 2026

Top 25 Software modernization services based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 85 companies tracked

RevenueBase identified 85 software modernization services headquartered in France as of September 2026 and tracks 1,025 professional contacts across them, including 372 with verified work emails. Paris is the largest hub.

This list covers software modernization 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

85Companies

1,025Contacts tracked

372Verified emails

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The 25 largest software modernization services based in France

Ranked by team size

Top 25 of 85 software modernization services based in France, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to software modernization 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	Ouidou	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	201-500	252 contacts →
	Indirect evidence “Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Source: RevenueBase Database · checked Sep 29, 2026
2	Adservio	Indirect evidence	Puteaux, FranceHQ checked Sep 29, 2026	201-500	161 contacts →
	Indirect evidence “We build a resilient digital experience.” Source: RevenueBase Database · checked Sep 29, 2026
3	Syspertec Group	Partial evidence	Saint-cloud, FranceHQ checked Sep 29, 2026	11-50	53 contacts →
	Partial evidence “Since 1993, Syspertec Group has been developing software solutions designed to simplify information system integration and modernize complex technical environments.” Source: RevenueBase Database · checked Sep 29, 2026
4	Move Solutions	Partial evidence	69002, FranceHQ checked Sep 29, 2026	51-200	35 contacts →
	Partial evidence “Move Solutions is an IT services company specialized in development and transformation of information systems : Data Migration, Modernization and Maintenance.” Source: RevenueBase Database · checked Sep 29, 2026
5	Cloudnausor Technologies	Partial evidence	Paris, FranceHQ checked Sep 29, 2026	51-200	34 contacts →
	Partial evidence “Cloudnausor Technologies is a forward-thinking technology company specializing in cloud-native digital transformation, enterprise software solutions, and AI-driven innovations.” Source: RevenueBase Database · checked Sep 29, 2026
6	JLL Solutions IT	Indirect evidence	Bois-colombes, FranceHQ checked Sep 29, 2026	11-50	30 contacts →
	Indirect evidence “JLL Solutions IT est une entreprise de services informatiques spécialisée dans la modernisation des environnements de travail, le conseil et le déploiement des infrastructures…” Source: RevenueBase Database · checked Sep 29, 2026
7	PIT	Indirect evidence	Lille, FranceHQ checked Sep 29, 2026	11-50	30 contacts →
	Indirect evidence “Pit est une ESN lilloise, créée en 2015 (anciennement Progress‑IT), composée de développeurs, product managers et Scrum Masters.” Source: RevenueBase Database · checked Sep 29, 2026
8	We ARE Beebay	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	51-200	27 contacts →
	Indirect evidence “We Are Beebay is an IT consulting agency.” Source: RevenueBase Database · checked Sep 29, 2026
9	Devoteam Nexdigital	Indirect evidence	Levallois-perret, FranceHQ checked Sep 29, 2026	51-200	27 contacts →
	Indirect evidence “Devoteam nexDigital est une société de conseil IT spécialisée dans la modernisation et la transformation des Systèmes d'Information.” Source: RevenueBase Database · checked Sep 29, 2026
10	Codezys	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	11-50	19 contacts →
	Indirect evidence “Codezys est une ESN spécialisée sur les technologies innovantes.” Source: RevenueBase Database · checked Sep 29, 2026
11	Euraxiel	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	11-50	18 contacts →
	Indirect evidence “Notre ADN : la qualité des développements et l’industrialisation des processus.” Source: RevenueBase Database · checked Sep 29, 2026
12	Belharra Numérique	Indirect evidence	Bassussarry, FranceHQ checked Sep 29, 2026	51-200	18 contacts →
	Indirect evidence “BELHARRA est une Entreprise de Services du Numérique spécialisée dans l'ingénierie informatique décisionnelle, les solutions collaboratives et le développement d'applications.” Source: RevenueBase Database · checked Sep 29, 2026
13	Scorpulting	Indirect evidence	Massy, FranceHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Entreprise spécialisée dans le conseil en systèmes d'informations innovants intervenant dans des secteurs d’activité variés.” Source: RevenueBase Database · checked Sep 29, 2026
14	Energy WAY	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect evidence “Energy Way est une ESN spécialisée dans la modernisation et la transformation digitale des systèmes d’information critiques, avec une expertise reconnue en environnements…” Source: RevenueBase Database · checked Sep 29, 2026
15	Appy Makers	Indirect evidence	Lyon, FranceHQ checked Sep 29, 2026	1-10	12 contacts →
	Indirect evidence “La donnée est stratégique au fonctionnement des organisations.” Source: RevenueBase Database · checked Sep 29, 2026
16	Albalogic	Indirect evidence	Aubagne, FranceHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “DEVELOPPEMENT Conception d’architectures logicielles modernes, robustes et stables selon l’environnement de déploiement de vos applications en tenant compte de vos habitudes…” Source: RevenueBase Database · checked Sep 29, 2026
17	Craftmania	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	51-200	11 contacts →
	Indirect evidence “Dans un marché obsédé par le time-to-market, nous défendons une idée simple : une application n'est pas un livrable, c'est un actif.” Source: RevenueBase Database · checked Sep 29, 2026
18	Daka Team Data In Action Knowledge For ALL	Indirect evidence	Lille, FranceHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “DAKA•TEAM est une ESN hydride, Spécialiste de la et de son écosystème!” Source: RevenueBase Database · checked Sep 29, 2026
19	Square System	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “Square a pour ambition d’accompagner les entreprises dans la modernisation de leur système d’information et leur mouvement vers l’hybridation de leur infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026
20	A3is	Indirect evidence	Charenton Le Pont, FranceHQ checked Sep 29, 2026	201-500	9 contacts →
	Indirect evidence “A3IS, une marque du groupe BLUE SOFT, est une ESN spécialisée dans la transformation digitale et le développement d’applications Mobiles et web marchand.” Source: RevenueBase Database · checked Sep 29, 2026
21	Global Info	Indirect evidence	Pompey, FranceHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “Fondée en 2007, Global Info est une Entreprise de Services du Numérique (ESN) qui délivre ses compétences dans trois domaines d’expertise différents : o L’intégration de solutions…” Source: RevenueBase Database · checked Sep 29, 2026
22	Itheis	Partial evidence	Aix En Provence Cedex 3, FranceHQ checked Sep 29, 2026	1-10	7 contacts →
	Partial evidence “itheis is a major actor in the IBM i iSeries System i modernization market.” Source: RevenueBase Database · checked Sep 29, 2026
23	Humanperf Software	Strong evidence	Lille, FranceHQ checked Sep 29, 2026	1-10	6 contacts →
	Strong evidence “Since 2004, Humanperf Software offers new generation software solutions, dedicated to the modernization and acceleration of innovation and continuous improvement activities in…” Source: RevenueBase Database · checked Sep 29, 2026
24	Qwadran	Indirect evidence	Schiltigheim, FranceHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “Qwadran – Your digital sky guide Chez Qwadran, nous ne faisons pas du développement pour cocher des cases.” Source: RevenueBase Database · checked Sep 29, 2026
25	Hozzeo Infra & Cloud	Indirect evidence	Lyon, FranceHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “Par son positionnement de spécialiste des infrastructures techniques et applicatives, Hozzeo Infra & Cloud, entité de l'écosystème Hozzeo Group, s’applique à moderniser…” Source: RevenueBase Database · checked Sep 29, 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 modernization 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 software modernization services.
Partial evidence: Its own public description names part of software modernization services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software modernization 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 85 software modernization services based in France

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Software modernization services based in France at a glance

As of Sep 29, 2026

36.3%Verified-email coverage

12.1Average contacts per company

1-10Median size (employees)

32.9%Largest-city concentration · Paris

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 85 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 software modernization 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 “software modernization 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 software modernization 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 software modernization 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, 372 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.

Software modernization services by metro

Software modernization services in Paris28

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 modernization 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 software modernization services are there based in France?

RevenueBase identified 85 software modernization 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?

Ouidou, headquartered in Paris, tops this list with the largest team on record.

Which city has the most software modernization services?

Paris leads with 28 headquartered companies, followed by Lyon (5) and Lille (3).

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 372 verified decision-maker contacts tracked across these 85 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.