Company lists · Data refreshed September 2026

Top 20 Legacy app modernization companies based in France

Name: Legacy app modernization companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 56 companies tracked

RevenueBase identified 56 company matches for legacy app modernization companies associated with France as of September 2026 and tracks 603 professional contacts across them, including 186 with verified work emails. Paris is the largest hub.

This list covers company matches for legacy app modernization companies associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

56Companies

603Contacts tracked

186Verified emails

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The 20 largest legacy app modernization companies based in France

Ranked by team size

Top 20 of 56 company matches for legacy app modernization companies based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Adservio	Exact match	Puteaux, FranceHQ recorded Sep 20, 2026	201-500	161 contacts →
	Exact match “We build a resilient digital experience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	L'atelier	Exact match	Paris, FranceHQ recorded Sep 20, 2026	11-50	60 contacts →
	Exact match “L’Atelier est une société de conseil tech au service des entreprises pour la création de produits web et mobiles.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Syspertec Group	Exact match	Saint-cloud, FranceHQ recorded Sep 20, 2026	11-50	53 contacts →
	Exact match “Since 1993, Syspertec Group has been developing software solutions designed to simplify information system integration and modernize complex technical environments.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Move Solutions	Exact match	69002, FranceHQ recorded Sep 20, 2026	51-200	35 contacts →
	Exact match “Move Solutions is an IT services company specialized in development and transformation of information systems : Data Migration, Modernization and Maintenance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	PIT	Exact match	Lille, FranceHQ recorded Sep 20, 2026	11-50	30 contacts →
	Exact match “Pit est une ESN lilloise, créée en 2015 (anciennement Progress‑IT), composée de développeurs, product managers et Scrum Masters.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	We ARE Beebay	Exact match	Paris, FranceHQ recorded Sep 20, 2026	51-200	27 contacts →
	Exact match “We Are Beebay is an IT consulting agency.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Crafteam	Exact match	Paris, FranceHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “Crafteam est un cabinet de conseil en informatique qui rassemble une communauté d’experts passionnés et spécialisés dans le développement d'applications de pointe.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Euraxiel	Exact match	Paris, FranceHQ recorded Sep 20, 2026	11-50	18 contacts →
	Exact match “Notre ADN : la qualité des développements et l’industrialisation des processus.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Energy WAY	Exact match	Paris, FranceHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Energy Way est une ESN spécialisée dans la modernisation et la transformation digitale des systèmes d’information critiques, avec une expertise reconnue en environnements…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Albalogic	Exact match	Aubagne, FranceHQ recorded Sep 20, 2026	11-50	12 contacts →
	Exact match “DEVELOPPEMENT Conception d’architectures logicielles modernes, robustes et stables selon l’environnement de déploiement de vos applications en tenant compte de vos habitudes…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Craftmania	Exact match	Paris, FranceHQ recorded Sep 20, 2026	51-200	11 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	2le Logiciel Libre Pour L Entreprise	Exact match	Mulhouse, FranceHQ recorded Sep 20, 2026	11-50	10 contacts →
	Exact match “2LE est une entreprise de développement logiciels entreprise sur mesure.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Daka Team Data In Action Knowledge For ALL	Exact match	Lille, FranceHQ recorded Sep 20, 2026	11-50	10 contacts →
	Exact match “DAKA•TEAM est une ESN hydride, Spécialiste de la et de son écosystème!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	A3is	Exact match	Charenton Le Pont, FranceHQ recorded Sep 20, 2026	201-500	9 contacts →
	Exact match “A3IS, une marque du groupe BLUE SOFT, est une ESN spécialisée dans la transformation digitale et le développement d’applications Mobiles et web marchand.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Itheis	Exact match	Aix En Provence Cedex 3, FranceHQ recorded Sep 20, 2026	1-10	7 contacts →
	Exact match “itheis is a major actor in the IBM i iSeries System i modernization market.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Qwadran	Exact match	Schiltigheim, FranceHQ recorded Sep 20, 2026	1-10	6 contacts →
	Exact match “Qwadran – Your digital sky guide Chez Qwadran, nous ne faisons pas du développement pour cocher des cases.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Lysilabs	Exact match	Blagnac, FranceHQ recorded Sep 20, 2026	1-10	5 contacts →
	Exact match “Spécialisé dans le développement agile de solutions logicielles, LYSILABS vous accompagne pour faire évoluer vos outils numériques, initier une transition numérique, améliorer vos…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Clicsystemes	Exact match	Guipavas, FranceHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “ClicSystèmes est une SSII innovante spécialisée dans le développement de logiciels full web, mettant l'accent sur la personnalisation et la création d'applications métier sur…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	VEDUS	Exact match	Paris, FranceHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Nexaby	Exact match	Paris, FranceHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Nexaby - Simple make IT better Nexaby est une société de conseil spécialisée en développements logiciels et architecture des SI.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “legacy app modernization companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 20 of 56 legacy app modernization companies based in France

See the full list, filter by size, metro and specialty, and access 186 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy app modernization companies based in France at a glance

As of Sep 20, 2026

30.8%Verified-email coverage

10.8Average contacts per company

1-10Median size (employees)

42.9%Largest-city concentration · Paris

Sep 20, 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 56 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with France whose business descriptions match “legacy app modernization companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 186 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “legacy app modernization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy app modernization companies are there based in France?

RevenueBase identified 56 company matches for legacy app modernization companies associated with France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Adservio tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most legacy app modernization companies?

Paris leads with 24 company records, followed by Lille (2) and Lyon (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 186 professional contacts with verified work emails tracked across these 56 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.