Company lists · Data refreshed November 2026

Top 23 Custom application contractors based in France

RevenueBase identified 1,146 company matches for custom application contractors associated with France as of November 2026 and tracks 8,231 professional contacts across them, including 2,785 with verified work emails. Paris is the largest hub.

This list covers company matches for custom application contractors 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
1,146Companies
8,231Contacts tracked
2,785Verified emails
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The 23 largest custom application contractors based in France

Ranked by team size
Top 23 of 1,146 company matches for custom application contractors 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMontbonnot-saint-martin, FranceHQ recorded Nov 6, 2026201-500275 contacts →

Exact match

“Nous sommes une ESN (entreprise de services numériques) spécialisée dans la conception, le développement et la maintenabilité de solutions informatiques, techniques et…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchIssy-les-moulineaux, FranceHQ recorded Nov 6, 202651-200159 contacts →

Exact match

“Une SSII avec de vraies valeurs."S'engager au forfait, respecter, les attentes de nos clients, leur budget en favorisant notamment la réutilisation affichée de nos composants…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAngoulême, FranceHQ recorded Nov 6, 202651-200131 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCourbevoie Cedex, FranceHQ recorded Nov 6, 2026n/a127 contacts →

Exact match

“IS Technologies est une société de conseils et de services en informatique basée à La Défense.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchParis, FranceHQ recorded Nov 6, 202651-200103 contacts →

Exact match

“Depuis sa création en 2006, TRITUX a développé une expertise et un savoir faire lui permettant de mener à bien tous ses projets de l’amont à l’aval.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIvry Sur Seine, FranceHQ recorded Nov 6, 202651-200101 contacts →

Exact match

“Castelis, c'est l'histoire d'une entreprise en croissance continue.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchRennes, FranceHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“6TM accompagne ses clients vers un monde toujours plus communicant grâce à ses solutions web, mobiles et logiciels.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchRoubaix, FranceHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“Eh non,"Développeurs de progrès", n’est pas qu'un joli slogan pour nos T-shirts; c'est une véritable philosophie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchParis, FranceHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“The Coding Machine is an IT company that provides bespoke web & mobile development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLe Haillan, FranceHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“4SH est une entreprise de services du numérique.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBlagnac, FranceHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“IPANOVA a pour mission de développer des solutions informatiques innovantes et adaptées aux besoins de nos clients, tout en favorisant une approche collaborative et inclusive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNeuilly-sur-seine, FranceHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“BOCASAY est une entreprise de services du numérique (ESN / SSII) spécialisée dans le développement web et applicatif.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNantes, FranceHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“En 2025, theTribe célèbre 10 ans d’expertise dans le développement de solutions numériques sur-mesure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLyon, FranceHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“L'entreprise Axopen propose toute une gamme de produits et services informatique allant du conseil en système d'informations, développement de solutions sur mesure ou intégration…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchParis, FranceHQ recorded Nov 6, 202611-5071 contacts →

Exact match

“Created in 2005, FWA is a software engineering company, specialized in business computing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNantes, FranceHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Nous sommes une ESN experte, engagée et résolument humaine.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchParis, FranceHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Ipsosenso manages from end-to-end (design, development and outsourcing) e-applications projects of large accounts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchToulouse, FranceHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“Désirade est une entreprise de services du numérique spécialisée dans les petites applications depuis 27 ans à Toulouse et Lyon.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchVersailles, FranceHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Bilog SAS est une ESN basée à Versailles qui, forte de ses plus de 530 projets réalisés (à l'été 2016), propose aux éditeurs de logiciels et aux ETI, des compétences dans la…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchParis, FranceHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“STEAMULO - Digital & IA Factory STEAMULO est une équipe d’experts techniques apportant des solutions innovantes aux problématiques web, mobile & IA de ses clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLa Rochelle, FranceHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“repply est une société basée à La Rochelle, spécialisée dans le développement d'applications métiers sur les technologies web et mobiles.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchValence, FranceHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRennes, FranceHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“SpikeeLabs travaille auprès de ses clients sur la conception et la réalisation de leur système d’information.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 23 of 1,146 custom application contractors based in France

See the full list, filter by size, metro and specialty, and access 2,785 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom application contractors based in France at a glance

As of Nov 6, 2026
33.8%Verified-email coverage
7.2Average contacts per company
1-10Median size (employees)
18.4%Largest-city concentration · Paris
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
871
11-50
213
51-200
42
201-500
4
1,001-5,000
1
10001+
1

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 1,146 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 “custom application contractors” 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 2,785 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.

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 “custom application contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom application contractors are there based in France?

RevenueBase identified 1,146 company matches for custom application contractors 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?

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

Which city has the most custom application contractors?

Paris leads with 211 company records, followed by Lyon (43) and Toulouse (29).

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 2,785 professional contacts with verified work emails tracked across these 1,146 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.