Company lists · Data refreshed September 2026

Top 25 Application modernization consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 857 companies tracked

RevenueBase identified 857 application modernization consulting firms headquartered in France as of September 2026 and tracks 22,429 professional contacts across them, including 8,853 with verified work emails. Paris is the largest hub.

This list covers application modernization consulting 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 21, 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 21, 2026 86% judged on-target in blind review

857Companies

22,429Contacts tracked

8,853Verified emails

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The 25 largest application modernization consulting firms based in France

Ranked by team size

Top 25 of 857 application modernization consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to application modernization consulting 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	Wavestone	Partial evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 21, 2026	1,001-5,000	6,190 contacts →
	Partial evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 21, 2026
2	GFI World	Indirect evidence	Saint-ouen, FranceHQ checked Sep 21, 2026	10001+	2,169 contacts →
	Indirect evidence “Gfi became Inetum in 2020.” Source: RevenueBase Database · checked Sep 21, 2026
3	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 21, 2026	1,001-5,000	1,735 contacts →
	Indirect evidence “Infotel accompagne les directions Informatiques et Métiers des grandes entreprises depuis 45 ans (Airbus, Air France, PSA, BNP Paribas, Banque de France ou encore BPCE, etc.).” Source: RevenueBase Database · checked Sep 21, 2026
4	Prodware	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	1,001-5,000	1,394 contacts →
	Indirect evidence “At Prodware, we believe that Trust, Audacity, and Passion are the driving forces behind meaningful digital transformation.” Source: RevenueBase Database · checked Sep 21, 2026
5	SFEIR	Partial evidence	Neuilly-sur-seine, FranceHQ checked Sep 21, 2026	501-1,000	904 contacts →
	Partial evidence “SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Source: RevenueBase Database · checked Sep 21, 2026
6	Zenika	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	501-1,000	430 contacts →
	Partial evidence “Zenika is an IT consulting firm with 550 employees that helps companies with their digital transformation.” Source: RevenueBase Database · checked Sep 21, 2026
7	Cyllene	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	279 contacts →
	Indirect evidence “Chez Cyllene, on couvre le spectre complet de votre besoin en termes de : Conseils 🧬 Définition d’architectures Hébergement & Services managés Cybersécurité & Formations…” Source: RevenueBase Database · checked Sep 21, 2026
8	Younup	Indirect evidence	Nantes, FranceHQ checked Sep 21, 2026	201-500	225 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
9	Meltone Advisory	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	206 contacts →
	Partial evidence “MeltOne is a consulting firm specialized in Organization and Solution Integration that helps companies and their employees in journey toward their transformation.” Source: RevenueBase Database · checked Sep 21, 2026
10	OXYL	Indirect evidence	Arcueil, FranceHQ checked Sep 21, 2026	51-200	198 contacts →
	Indirect evidence “Oxyl Groupe \| L’humain au cœur de la technologie Chez Oxyl Groupe, nous accompagnons les entreprises dans leurs transformations digitales avec une conviction simple : la…” Source: RevenueBase Database · checked Sep 21, 2026
11	Neos-Sdi	Strong evidence	Levallois-perret, FranceHQ checked Sep 21, 2026	51-200	187 contacts →
	Strong evidence “Founded in 2001, Neos-SDI is a global business and technology consulting firm that leads organizations toward innovative growth faster through the identification, application and…” Source: RevenueBase Database · checked Sep 21, 2026
12	Wemanity Reply Paris	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	178 contacts →
	Partial evidence “Wemanity Reply is a consulting and delivery firm specialized in technological, organizational, and cultural transformation.” Source: RevenueBase Database · checked Sep 21, 2026
13	Calliope Business Solutions By TVH Consulting	Indirect evidence	Saint-denis, FranceHQ checked Sep 21, 2026	201-500	162 contacts →
	Indirect evidence “Partenaire reconnu de la transformation digitale, Calliope Business Solutions est spécialisé dans l’édition et l’intégration de solutions ERP, CRM et collaboratives sur les…” Source: RevenueBase Database · checked Sep 21, 2026
14	Alenia Consulting	Indirect evidence	Puteaux, FranceHQ checked Sep 21, 2026	51-200	161 contacts →
	Indirect evidence “Alenia is a Tribe of IT consultants united and inclusive.” Source: RevenueBase Database · checked Sep 21, 2026
15	Adservio	Indirect evidence	Puteaux, FranceHQ checked Sep 21, 2026	201-500	161 contacts →
	Indirect evidence “We build a resilient digital experience.” Source: RevenueBase Database · checked Sep 21, 2026
16	Harington	Indirect evidence	Levallois-perret, FranceHQ checked Sep 21, 2026	201-500	151 contacts →
	Indirect evidence “Harington est un cabinet de conseil et de services technologiques créée en 2008.” Source: RevenueBase Database · checked Sep 21, 2026
17	Discovery Intech	Indirect evidence	Puteaux, FranceHQ checked Sep 21, 2026	201-500	140 contacts →
	Indirect evidence “Depuis plus de 30 ans, Discovery a accompagné plus de entreprises dans 26 pays à travers le monde dans leur digitalisation en développant et en intégrant des solutions et des…” Source: RevenueBase Database · checked Sep 21, 2026
18	RBI	Indirect evidence	Rennes, FranceHQ checked Sep 21, 2026	11-50	133 contacts →
	Indirect evidence “Dans un monde où tout s’accélère, la transformation numérique n’est plus une option : c’est un levier de compétitivité.” Source: RevenueBase Database · checked Sep 21, 2026
19	SCUB	Partial evidence	Angoulême, FranceHQ checked Sep 21, 2026	51-200	127 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
20	IS Technologies	Indirect evidence	Courbevoie Cedex, FranceHQ checked Sep 21, 2026	n/a	127 contacts →
	Indirect evidence “IS Technologies est une société de conseils et de services en informatique basée à La Défense.” Source: RevenueBase Database · checked Sep 21, 2026
21	Spark-It	Indirect evidence	La Défense 5, FranceHQ checked Sep 21, 2026	51-200	105 contacts →
	Indirect evidence “Spark-it is an expert in software architecture.” Source: RevenueBase Database · checked Sep 21, 2026
22	ENGIT	Indirect evidence	Valbonne, FranceHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “engIT \| Innovation IT & Transformation digitale - Faire du conseil différemment Depuis 2017, engIT accompagne les entreprises dans leurs projets stratégiques d'innovation…” Source: RevenueBase Database · checked Sep 21, 2026
23	G4	Indirect evidence	Arpajon, FranceHQ checked Sep 21, 2026	11-50	88 contacts →
	Indirect evidence “G4 Boosting Information est : conjuguer la connaissance métier, la maîtrise des outils et la capacité à personnaliser vos projets.” Source: RevenueBase Database · checked Sep 21, 2026
24	Simphonis	Indirect evidence	Beaucouzé, FranceHQ checked Sep 21, 2026	51-200	84 contacts →
	Indirect evidence “Unlock Your Digital Potential with SIMPHONIS!” Source: RevenueBase Database · checked Sep 21, 2026
25	Vaganet	Indirect evidence	Velizy-villacoublay, FranceHQ checked Sep 21, 2026	51-200	79 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 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 consulting 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 consulting firms.
Partial evidence: Its own public description names part of application modernization consulting 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 consulting 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 857 application modernization consulting firms based in France

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Application modernization consulting firms based in France at a glance

As of Sep 21, 2026

39.5%Verified-email coverage

26.2Average contacts per company

1-10Median size (employees)

29.8%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

522

11-50

234

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 857 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 consulting 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 consulting 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 consulting 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 consulting 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, 8,853 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 21, 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 consulting firms by metro

Application modernization consulting firms in Paris255
Application modernization consulting firms in Lyon36

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 consulting 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 consulting firms are there based in France?

RevenueBase identified 857 application modernization consulting 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?

Wavestone, headquartered in La Defense, tops this list with the largest team on record.

Which city has the most application modernization consulting firms?

Paris leads with 255 headquartered companies, followed by Lyon (36) and Neuilly-Sur-Seine (17).

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 8,853 verified decision-maker contacts tracked across these 857 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 21, 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.