Company lists · Data refreshed September 2026

Top 25 App modernization companies based in France

Name: 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 19, 2026 90 companies tracked

RevenueBase identified 90 app modernization companies headquartered in France as of September 2026 and tracks 968 professional contacts across them, including 343 with verified work emails. Paris is the largest hub.

This list covers app modernization companies 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

90Companies

968Contacts tracked

343Verified emails

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The 25 largest app modernization companies based in France

Ranked by team size

Top 25 of 90 app modernization companies 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 app modernization companies: 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 19, 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 19, 2026
2	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
3	SCUB	Indirect evidence	Angoulême, FranceHQ checked Sep 19, 2026	51-200	127 contacts →
	Indirect 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 19, 2026
4	Elipce Solutions, Votre Spécialiste Logiciel & Data	Indirect evidence	Valence, FranceHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “Chez Elipce Solutions, nous concevons, déployons et maintenons des solutions logicielles adaptées à vos enjeux spécifiques, qu'il s'agisse d'outils internes dans tous les…” Source: RevenueBase Database · checked Sep 19, 2026
5	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
6	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
7	Thera Soft	Indirect evidence	Limoges, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Nous vous apportons nos compétences en développement logiciel et nos connaissances du métier afin de vous apporter rentabilité, économie, et gain de productivité.” Source: RevenueBase Database · checked Sep 19, 2026
8	Steamulo Lyon	Indirect evidence	Lyon, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “STEAMULO Lyon accompagne ses clients sur des projets à forts enjeux métiers et technologiques, de la conception et du développement des solutions sur-mesure, jusqu'à leur…” Source: RevenueBase Database · checked Sep 19, 2026
9	Albalogic	Indirect evidence	Aubagne, FranceHQ checked Sep 19, 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 19, 2026
10	ELANZ	Indirect evidence	La Garenne Colombes, FranceHQ checked Sep 19, 2026	201-500	11 contacts →
	Indirect evidence “Entreprise de Services Numériques, le groupe Elanz (250 collaborateurs, consultants & ingénieurs) vous accompagne dans l'atteinte de vos enjeux stratégiques en proposant des…” Source: RevenueBase Database · checked Sep 19, 2026
11	Craftmania	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
12	2le Logiciel Libre Pour L Entreprise	Indirect evidence	Mulhouse, FranceHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “2LE est une entreprise de développement logiciels entreprise sur mesure.” Source: RevenueBase Database · checked Sep 19, 2026
13	Tekteo	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “Tekteo est née d'une véritable passion commune pour le numérique.” Source: RevenueBase Database · checked Sep 19, 2026
14	Aosora	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “Aosora est une société de conseil, éditrice de produits logiciels, d’ingénierie et de transformation digitale, qui assure la conception et le développement de vos projets et qui…” Source: RevenueBase Database · checked Sep 19, 2026
15	A3is	Indirect evidence	Charenton Le Pont, FranceHQ checked Sep 19, 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 19, 2026
16	GENEE	Indirect evidence	Lyon, FranceHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Découvrez Genee, votre partenaire en transformation numérique!” Source: RevenueBase Database · checked Sep 19, 2026
17	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
18	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
19	Siliceum	Indirect evidence	Clermont-ferrand, FranceHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “siliceum : Créateurs de solutions IT simples, rapides et opérationnelles Chez siliceum, nous vous proposons des solutions claires et taillées sur mesure pour vos enjeux IT.” Source: RevenueBase Database · checked Sep 19, 2026
20	Digitalusor	Indirect evidence	Région De Saint-nazaire, FranceHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Digitalusor propose des services de développement de logiciels desktop, web et mobiles.” Source: RevenueBase Database · checked Sep 19, 2026
21	Mosaic LAB	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Mosaic Lab offers an integrated range of services from consulting to custom software development and integration.” Source: RevenueBase Database · checked Sep 19, 2026
22	Hécate	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Hécate est une structure de services IT fondée par des experts et spécialisée dans le développement.” Source: RevenueBase Database · checked Sep 19, 2026
23	Clicsystemes	Indirect evidence	Guipavas, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
24	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
25	Salto Consulting	Indirect evidence	Roubaix, FranceHQ checked Sep 19, 2026	11-50	2 contacts →
	Indirect evidence “Créée en 2002, Salto Consulting est une ESN spécialisée dans l’architecture et l’expertise de systèmes informatiques de plus en plus volumineux, complexes et hétérogènes.” 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: app modernization companies. 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 app modernization companies.
Partial evidence: Its own public description names part of app modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name app modernization companies. 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 90 app modernization companies based in France

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App modernization companies based in France at a glance

As of Sep 19, 2026

35.4%Verified-email coverage

10.8Average contacts per company

1-10Median size (employees)

25.6%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 90 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 app modernization companies, 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 “app modernization companies”. 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 app modernization companies), 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 app modernization companies, 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, 343 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.

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 app modernization companies, 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 app modernization companies are there based in France?

RevenueBase identified 90 app modernization companies 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 app modernization companies?

Paris leads with 23 headquartered companies, followed by Lyon (4) 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 343 verified decision-maker contacts tracked across these 90 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.