Company lists · Data refreshed September 2026

Top 25 Custom web application developers based in France

Name: Custom web application developers based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,262 companies tracked

RevenueBase identified 1,262 custom web application developers headquartered in France as of September 2026 and tracks 4,303 professional contacts across them, including 1,126 with verified work emails. Paris is the largest hub.

This list covers custom web application developers 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

1,262Companies

4,303Contacts tracked

1,126Verified emails

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The 25 largest custom web application developers based in France

Ranked by team size

Top 25 of 1,262 custom web application developers 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 custom web application developers: 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	Spark-It	Indirect evidence	La Défense 5, FranceHQ checked Sep 19, 2026	51-200	105 contacts →
	Indirect evidence “Spark-it is an expert in software architecture.” Source: RevenueBase Database · checked Sep 19, 2026
2	Fidesio	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “Located in the heart of Paris, our team puts all its expertise to their clients, to facilitate the implementation and sustainability of their projects to create websites and web…” Source: RevenueBase Database · checked Sep 19, 2026
3	Wemoov	Indirect evidence	Carquefou, FranceHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “QUI SOMMES-NOUS?” Source: RevenueBase Database · checked Sep 19, 2026
4	Jehann	Indirect evidence	Nantes, FranceHQ checked Sep 19, 2026	11-50	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
5	Vigicorp	Partial evidence	Saint-herblain, FranceHQ checked Sep 19, 2026	11-50	44 contacts →
	Partial evidence “Créée en 2007, Vigicorp est une agence nantaise spécialisée dans le développement web et mobile dont la mission est d’accompagner les organisations dans leurs projets de création…” Source: RevenueBase Database · checked Sep 19, 2026
6	Kernix	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	38 contacts →
	Strong evidence “Kernix est une agence digitale experte en développement d'applications web et mobile : Kernix propose des solutions sur mesure et accompagne ses clients tout au long de leur…” Source: RevenueBase Database · checked Sep 19, 2026
7	Page UP	Partial evidence	Dijon, FranceHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Nous sommes spécialisés dans la conception et le développement de solutions web et mobiles professionnelles s’adressant aux PME, Grandes Entreprises, Grands Comptes et Secteur…” Source: RevenueBase Database · checked Sep 19, 2026
8	ALTEO	Partial evidence	Cergy-pontoise, FranceHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Alteo Web agency : Une agence spécialisée dans la création de sites Internet.” Source: RevenueBase Database · checked Sep 19, 2026
9	Poyesis	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Poyesis est une agence digitale spécialisée dans la conception et le développement de solutions web, mobiles et IA sur mesure.” Source: RevenueBase Database · checked Sep 19, 2026
10	Dotsafe	Indirect evidence	Bordeaux, FranceHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Société de services à taille humaine et en pleine progression.” Source: RevenueBase Database · checked Sep 19, 2026
11	Optavis	Partial evidence	Cesson-sévigné, FranceHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “Optavis est une agence web basée à Cesson-Sévigné, près de Rennes- Des sites Internet personnalisés - Des prestations de référencement naturel - Des prestations de community…” Source: RevenueBase Database · checked Sep 19, 2026
12	Énéance	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong evidence “Nous sommes Énéance, spécialiste de la conception et du développement d’applications web et mobiles sur mesure.” Source: RevenueBase Database · checked Sep 19, 2026
13	LES Fabricants	Strong evidence	Villeneuve-d’ascq, FranceHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong evidence “Les Fabricants, Agence digitale lilloise spécialisée dans la conception et le développement d'outils numériques au service des métiers : Logiciel métier, application web…” Source: RevenueBase Database · checked Sep 19, 2026
14	Symdrik	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “Symdrik est une agence de développement web et mobile.” Source: RevenueBase Database · checked Sep 19, 2026
15	Cognix Systems	Strong evidence	Rennes, FranceHQ checked Sep 19, 2026	11-50	29 contacts →
	Strong evidence “Cognix Systems est spécialisée en conseil, conception et développement de site Internet, d'applications évoluées et logiciels sur technologie Web (Internet/intranet/extranet).” Source: RevenueBase Database · checked Sep 19, 2026
16	Axelites	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “Nous sommes une société spécialisée dans le développement de sites web et de logiciels sur mesure pour tout type d'entreprise.” Source: RevenueBase Database · checked Sep 19, 2026
17	Umanit	Indirect evidence	Nantes, FranceHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Depuis près de 15 ans, nous sommes spécialisés dans la conception et le développement de solutions techniques sur mesure pour réaliser les ambitions de nos clients.” Source: RevenueBase Database · checked Sep 19, 2026
18	FTEL	Strong evidence	Rouen, FranceHQ checked Sep 19, 2026	11-50	25 contacts →
	Strong evidence “Agence d'édition de logiciels web & mobile depuis Réalisation sur mesure de vos applications web & mobile.” Source: RevenueBase Database · checked Sep 19, 2026
19	Devcorp	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Devcorp est une agence de développement informatique et de marketing digital, dont les capacités larges et diversifiées dans le secteur du multimédia et d'Internet permettent de…” Source: RevenueBase Database · checked Sep 19, 2026
20	Tekoway	Strong evidence	Marseille, FranceHQ checked Sep 19, 2026	11-50	24 contacts →
	Strong evidence “Tekoway is a full-stack technology company, that accompanies you on all your digital projects: web applications, mobile applications, or business tools.” Source: RevenueBase Database · checked Sep 19, 2026
21	Grow Your Business	Indirect evidence	Arras, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 19, 2026
22	Digital Garden	Indirect evidence	Nantes, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Digital Garden (une agence du Groupe Province_) est une agence nantaise d’idées, d’expertises et de développements digitaux recherche de nouveaux talents pour soutenir sa forte…” Source: RevenueBase Database · checked Sep 19, 2026
23	Evodev	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	22 contacts →
	Partial evidence “L’équipe Evodev vous aide à passer de l'idée à la web-app en un Que vous ayez un projet de marketplace, CRM, SaaS ou encore de réseau social, nous le développons pour vous en 6…” Source: RevenueBase Database · checked Sep 19, 2026
24	Feel And Clic	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	21 contacts →
	Strong evidence “Feel & Clic a pour mission d'accompagner ses clients PME et Grands Groupes dans le choix et la réalisation de solutions applicatives Web et mobiles adaptées à leurs besoins…” Source: RevenueBase Database · checked Sep 19, 2026
25	Gettingapp	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “We offer high-end full-stack development services at prices tailored to your needs.” 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: custom web application developers. 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 custom web application developers.
Partial evidence: Its own public description names part of custom web application developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom web application developers. 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 1,262 custom web application developers based in France

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Custom web application developers based in France at a glance

As of Sep 19, 2026

26.2%Verified-email coverage

3.4Average contacts per company

1-10Median size (employees)

16.3%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,136

11-50

113

51-200

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 1,262 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 custom web application developers, 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 “custom web application developers”. 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 custom web application developers), 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 custom web application developers, 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, 1,126 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.

Custom web application developers by metro

Custom web application developers in Paris206
Custom web application developers in Lyon44
Custom web application developers in Toulouse33
Custom web application developers in Bordeaux31

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 custom web application developers, 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 custom web application developers are there based in France?

RevenueBase identified 1,262 custom web application developers 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?

Spark-It, headquartered in Courbevoie, tops this list with the largest team on record.

Which city has the most custom web application developers?

Paris leads with 206 headquartered companies, followed by Lyon (44) and Toulouse (33).

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 1,126 verified decision-maker contacts tracked across these 1,262 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.