Company lists · Data refreshed September 2026

Top 25 Application modernization firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 71 companies tracked

RevenueBase identified 71 application modernization firms headquartered in France as of September 2026 and tracks 826 professional contacts across them, including 219 with verified work emails. Paris is the largest hub.

This list covers application modernization 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 19, 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 19, 2026 86% judged on-target in blind review

71Companies

826Contacts tracked

219Verified emails

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The 25 largest application modernization firms based in France

Ranked by team size

Top 25 of 71 application modernization firms based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to application modernization firms: 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	Adservio	Indirect evidence	Puteaux, FranceHQ checked Sep 19, 2026	201-500	161 contacts →
	Indirect evidence “We build a resilient digital experience.” Source: RevenueBase Database · checked Sep 19, 2026
2	L'atelier	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	60 contacts →
	Indirect evidence “L’Atelier est une société de conseil tech au service des entreprises pour la création de produits web et mobiles.” Source: RevenueBase Database · checked Sep 19, 2026
3	Syspertec Group	Indirect evidence	Saint-cloud, FranceHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect 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 19, 2026
4	Move Solutions	Partial evidence	69002, FranceHQ checked Sep 19, 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 19, 2026
5	Cloudnausor Technologies	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	34 contacts →
	Indirect 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 19, 2026
6	JLL Solutions IT	Indirect evidence	Bois-colombes, FranceHQ checked Sep 19, 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 19, 2026
7	PIT	Indirect evidence	Lille, FranceHQ checked Sep 19, 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 19, 2026
8	Devoteam Nexdigital	Indirect evidence	Levallois-perret, FranceHQ checked Sep 19, 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 19, 2026
9	Euraxiel	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Notre ADN : la qualité des développements et l’industrialisation des processus.” Source: RevenueBase Database · checked Sep 19, 2026
10	clicsoft.io	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “TRANSFORMATION DIGITALE / MODERNISATION DE PLATEFORME Nous vous aidons à améliorer l'expérience de vos clients et augmenter votre efficacité opérationnelle grâce au digital.” Source: RevenueBase Database · checked Sep 19, 2026
11	Energy WAY	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
12	Albalogic	Partial evidence	Aubagne, FranceHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial 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 19, 2026
13	Craftmania	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	11 contacts →
	Partial 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 19, 2026
14	Daka Team Data In Action Knowledge For ALL	Indirect evidence	Lille, FranceHQ checked Sep 19, 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 19, 2026
15	Wappizy	Partial evidence	Mont Saint Aignan, FranceHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Nous créons des plateformes web et applications mobiles, design, performantes et cross plateformes.” Source: RevenueBase Database · checked Sep 19, 2026
16	A3is	Partial evidence	Charenton Le Pont, FranceHQ checked Sep 19, 2026	201-500	9 contacts →
	Partial 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 19, 2026
17	Global Info	Indirect evidence	Pompey, FranceHQ checked Sep 19, 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 19, 2026
18	Itheis	Partial evidence	Aix En Provence Cedex 3, FranceHQ checked Sep 19, 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 19, 2026
19	53js	Indirect evidence	Nice, FranceHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “53JS : Expert in Web technology Design, programming, integration design.” Source: RevenueBase Database · checked Sep 19, 2026
20	Qwadran	Indirect evidence	Schiltigheim, FranceHQ checked Sep 19, 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 19, 2026
21	Rebaze	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “REBAZE est un cabinet de conseil, design et développement agile spécialisé dans l’accélération de l’IT de ses clients.” Source: RevenueBase Database · checked Sep 19, 2026
22	Slamflow	Partial evidence	Valence, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Slamflow est une société de conseil en informatique qui édite également sa solution nocode de conception d'applications de gestion pour entreprises.” Source: RevenueBase Database · checked Sep 19, 2026
23	VEDUS	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Vedus is a leading IT consulting firm specializing in delivering cutting-edge software solutions and providing top-notch software engineering services to companies of all sizes.” Source: RevenueBase Database · checked Sep 19, 2026
24	Web'ap	Indirect evidence	Dijon, FranceHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Web and mobile apps development.” Source: RevenueBase Database · checked Sep 19, 2026
25	Nexaby	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Nexaby - Simple make IT better Nexaby est une société de conseil spécialisée en développements logiciels et architecture des SI.” Source: RevenueBase Database · checked Sep 19, 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: application modernization 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 application modernization firms.
Partial evidence: Its own public description names part of application modernization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name application modernization 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 71 application modernization firms based in France

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Application modernization firms based in France at a glance

As of Sep 19, 2026

26.5%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

38.0%Largest-city concentration · Paris

Sep 19, 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 71 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 application modernization 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 “application modernization 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 application modernization 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 application modernization 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, 219 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 19, 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.

Application modernization firms by metro

Application modernization firms in Paris27

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 application modernization 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 application modernization firms are there based in France?

RevenueBase identified 71 application modernization 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?

Adservio, headquartered in Puteaux, tops this list with the largest team on record.

Which city has the most application modernization firms?

Paris leads with 27 headquartered companies, followed by Lyon (3) and Courbevoie (2).

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 219 verified decision-maker contacts tracked across these 71 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 19, 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.