Company lists · Data refreshed November 2026

Top 24 Legacy application modernization companies based in France

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 163 companies tracked

RevenueBase identified 163 company matches for legacy application modernization companies associated with France as of November 2026 and tracks 4,033 professional contacts across them, including 1,813 with verified work emails. Paris is the largest hub.

This list covers company matches for legacy application 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 November 6, 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 Nov 6, 2026 How this list was built

163Companies

4,033Contacts tracked

1,813Verified emails

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The 24 largest legacy application modernization companies based in France

Ranked by team size

Top 24 of 163 company matches for legacy application modernization companies based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Cyllene	Exact match	Paris, FranceHQ recorded Nov 6, 2026	201-500	283 contacts →
	Exact match “Chez Cyllene, on couvre le spectre complet de votre besoin en termes de : Conseils 🧬 Définition d’architectures Hébergement & Services managés Cybersécurité & Formations…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Harington	Exact match	Levallois-perret, FranceHQ recorded Nov 6, 2026	201-500	156 contacts →
	Exact match “Harington est un cabinet de conseil et de services technologiques créée en 2008.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Adservio	Exact match	Puteaux, FranceHQ recorded Nov 6, 2026	201-500	145 contacts →
	Exact match “We build a resilient digital experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Web-Atrio	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	122 contacts →
	Exact match “Bienvenue chez WEB-ATRIO, l’#ESN qui change la donne!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Simphonis	Exact match	Beaucouzé, FranceHQ recorded Nov 6, 2026	51-200	82 contacts →
	Exact match “Unlock Your Digital Potential with SIMPHONIS!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Vaganet	Exact match	Velizy-villacoublay, FranceHQ recorded Nov 6, 2026	51-200	79 contacts →
	Exact match “Pionnier du delivery agile depuis 2014, VAGANET met à disposition de ses clients des expertises techniques et fonctionnelles spécialisées dans la transformation et l’actualisation…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	FOKUS	Exact match	Lyon, FranceHQ recorded Nov 6, 2026	51-200	68 contacts →
	Exact match “FOKUS, où l’Humain et la Technologie se rencontrent.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Activus Group	Exact match	Toulouse, FranceHQ recorded Nov 6, 2026	11-50	67 contacts →
	Exact match “ACTIVUS Group c’est 4 agences, 5 métiers, 6 offres technologiques pour 95 salariés.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Diggers	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	60 contacts →
	Exact match “Diggers est un cabinet de conseil facilitateur de projets et de transformations, spécialisé dans les métiers de l'IT (développement, data & IA, devops, cloud) et une agence de…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Neoxia	Exact match	Paris, FranceHQ recorded Nov 6, 2026	201-500	49 contacts →
	Exact match “Since octobre 2023, Neoxia is a Deloitte business!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Agilia Technology	Exact match	Entzheim, FranceHQ recorded Nov 6, 2026	11-50	49 contacts →
	Exact match “Agilia Technology est une entreprise de services numériques spécialisée dans le conseil et l’expertise technologique.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Move Solutions	Exact match	69002, FranceHQ recorded Nov 6, 2026	51-200	37 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 · Nov 6, 2026 · View company records in RevenueBase
13	Management Square	Exact match	Montigny-le-bretonneux, FranceHQ recorded Nov 6, 2026	51-200	33 contacts →
	Exact match “Depuis sa création, Management Square s'est positionné comme un acteur de référence dans l'accompagnement des entreprises face aux défis actuels du monde numérique.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	ATM Consulting	Exact match	Valence, FranceHQ recorded Nov 6, 2026	11-50	32 contacts →
	Exact match “Société de conseil informatique, ATM Consulting vous accompagne dans vos projets d'organisation et de modernisation de votre système d'information.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	We ARE Beebay	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	28 contacts →
	Exact match “We Are Beebay is an IT consulting agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	PIT	Exact match	Lille, FranceHQ recorded Nov 6, 2026	11-50	27 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 · Nov 6, 2026 · View company records in RevenueBase
17	Kp2i	Exact match	Paris, FranceHQ recorded Nov 6, 2026	51-200	27 contacts →
	Exact match “KP2i est un cabinet de Conseil & de Services qui vous accompagne pour transformer votre système d’information en un véritable partenaire business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Devoteam Nexdigital	Exact match	Levallois-perret, FranceHQ recorded Nov 6, 2026	51-200	26 contacts →
	Exact match “Devoteam nexDigital est une société de conseil IT spécialisée dans la modernisation et la transformation des Systèmes d'Information.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	BEK Advisory	Exact match	Paris, FranceHQ recorded Nov 6, 2026	11-50	25 contacts →
	Exact match “Bek Advisory est un cabinet de conseil en management et en organisation spécialisé dans la gestion de projets de transformation SI et métier.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Euraxiel	Exact match	Paris, FranceHQ recorded Nov 6, 2026	11-50	23 contacts →
	Exact match “Notre ADN : la qualité des développements et l’industrialisation des processus.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Squareone	Exact match	Puteaux, FranceHQ recorded Nov 6, 2026	51-200	20 contacts →
	Exact match “Fondée en 2018, Square One est une entreprise de service numérique (ESN), du Top 100 français, en pleine expansion proposant à une clientèle grands comptes de bénéficier de…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Eita Consulting	Exact match	Montesson, FranceHQ recorded Nov 6, 2026	11-50	20 contacts →
	Exact match “Fondée en 2017, EITA Consulting compte aujourd'hui plus de 50 collaborateurs spécialisés dans la mise en œuvre de projets de transformation numérique.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Energy WAY	Exact match	Paris, FranceHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
24	clicsoft.io	Exact match	Paris, FranceHQ recorded Nov 6, 2026	11-50	13 contacts →
	Exact match “TRANSFORMATION DIGITALE / MODERNISATION DE PLATEFORME Nous vous aidons à améliorer l'expérience de vos clients et augmenter votre efficacité opérationnelle grâce au digital.” Recorded in the RevenueBase company graph · Nov 6, 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 application 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 24 of 163 legacy application modernization companies based in France

See the full list, filter by size, metro and specialty, and access 1,813 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy application modernization companies based in France at a glance

As of Nov 6, 2026

45.0%Verified-email coverage

24.7Average contacts per company

1-10Median size (employees)

38.7%Largest-city concentration · Paris

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 163 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 application 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 1,813 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 November 6, 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.

Legacy application modernization companies by metro

Legacy application modernization companies in Paris63

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 application modernization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 163 company matches for legacy application modernization companies associated with France as of November 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?

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

Which city has the most legacy application modernization companies?

Paris leads with 63 company records, followed by Lyon (10) and Montpellier (4).

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 1,813 professional contacts with verified work emails tracked across these 163 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 November 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 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.