Company lists · Data refreshed September 2026

Top 25 Custom software development consultants based in France

Name: Custom software development consultants based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 2,708 companies tracked

RevenueBase identified 2,708 company matches for custom software development consultants associated with France as of September 2026 and tracks 25,214 professional contacts across them, including 7,868 with verified work emails and 777 with mobile numbers. Paris is the largest hub.

This list covers company matches for custom software development consultants 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 September 29, 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 Sep 29, 2026 How this list was built

2,708Companies

25,214Contacts tracked

7,868Verified emails

777Mobile numbers

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The 25 largest custom software development consultants based in France

Ranked by team size

Top 25 of 2,708 company matches for custom software development consultants based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	IGA	Exact match	Malakoff, FranceHQ recorded Sep 29, 2026	n/a	1,530 contacts →
	Exact match “Métiers - Edition de composants/modules logiciels pour les métiers de l’assurance, du voyage et du négoce- Création de solutions spécifiques pour le compte des clients- Suivi et…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	SMILE	Exact match	Asnières Sur Seine, FranceHQ recorded Sep 29, 2026	1,001-5,000	1,352 contacts →
	Exact match “We are Technology experts & Business partners.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	SFEIR	Exact match	Neuilly-sur-seine, FranceHQ recorded Sep 29, 2026	501-1,000	904 contacts →
	Exact match “SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	CELAD	Exact match	Toulouse, FranceHQ recorded Sep 29, 2026	1,001-5,000	570 contacts →
	Exact match “Consulting and Engineering in innovative technology Celad is a global software engineering company with over 1200 engineers.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Sully Group	Exact match	Saint-priest, FranceHQ recorded Sep 29, 2026	501-1,000	560 contacts →
	Exact match “Sully Group : Working together to create a useful and sustainable digital environment > 1 global digital services offering: Business Applications, Mobile Applications…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Noveo Group	Exact match	Paris, FranceHQ recorded Sep 29, 2026	501-1,000	327 contacts →
	Exact match “The Noveo group has specialized in design, development and maintenance of digital solutions since 1998.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Avanquest	Exact match	Courbevoie, FranceHQ recorded Sep 29, 2026	201-500	315 contacts →
	Exact match “At Avanquest, we develop software that makes digital simpler, smarter and more useful.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	Amiltone	Exact match	Villeurbanne, FranceHQ recorded Sep 29, 2026	201-500	314 contacts →
	Exact match “Bienvenue chez Amiltone.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	Infogene	Exact match	Neuilly-sur-seine, FranceHQ recorded Sep 29, 2026	501-1,000	291 contacts →
	Exact match “INFOGENE est une ESN spécialisée dans 3 domaines principaux (en AMOA et MOE): DIGITAL: Notre savoir faire : Conseil, architecture logiciel, conception, développement, maintenance…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Kaizen Solutions KZS	Exact match	Montbonnot-saint-martin, FranceHQ recorded Sep 29, 2026	201-500	261 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 · Sep 29, 2026 · View company records in RevenueBase
11	Ouidou	Exact match	Paris, FranceHQ recorded Sep 29, 2026	201-500	252 contacts →
	Exact match “Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Avisto	Exact match	Valbonne, FranceHQ recorded Sep 29, 2026	201-500	226 contacts →
	Exact match “The software development: your passion, our profession.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Younup	Exact match	Nantes, FranceHQ recorded Sep 29, 2026	201-500	225 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Takima	Exact match	Bagneux, FranceHQ recorded Sep 29, 2026	51-200	222 contacts →
	Exact match “Whether dealing with Opensource, B2B, B2C mobile apps, intranets or HA infrastructures, the same approach remains: Understanding the context, qualifying the use case, determining…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	MARGO	Exact match	Paris, FranceHQ recorded Sep 29, 2026	201-500	174 contacts →
	Exact match “More than a simple IT consulting group, MARGO is an alchemy of talents with constantly enriched expertise, always encouraged to be dynamic and to flourish.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	AXYUS	Exact match	Issy-les-moulineaux, FranceHQ recorded Sep 29, 2026	51-200	170 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 · Sep 29, 2026 · View company records in RevenueBase
17	HR Team Group	Exact match	Paris, FranceHQ recorded Sep 29, 2026	501-1,000	157 contacts →
	Exact match “Since 2005, HR Team, Digital Services Company, has been ensuring a digital strategy in line with the ambition of its customers.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Reactis Group	Exact match	Aix-en-provence Cedex 3, FranceHQ recorded Sep 29, 2026	201-500	145 contacts →
	Exact match “Nous sommes une ESN qui accompagne les entreprises dans leurs projets IT grâce à des modes d'intervention flexibles : Assistance Technique Unitaire (ATU), Assistance Technique…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Omnilog	Exact match	Boulogne-billancourt, FranceHQ recorded Sep 29, 2026	201-500	139 contacts →
	Exact match “Nos mots-clés :#Médias,#Technos,#Convivialité Plus qu'une SSII, Omnilog est une équipe de 300 ingénieurs spécialisés dans le développement web et mobile et les technologies.NET…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Groupe KEY Consulting	Exact match	Suresnes, FranceHQ recorded Sep 29, 2026	51-200	128 contacts →
	Exact match “Notre raison d'être est d'accompagner l'évolution des usages de nos clients (startup, éditeurs, grands comptes) grâce à l'impact de nos ingénieurs IT.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	SCUB	Exact match	Angoulême, FranceHQ recorded Sep 29, 2026	51-200	127 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 · Sep 29, 2026 · View company records in RevenueBase
22	IS Technologies	Exact match	Courbevoie Cedex, FranceHQ recorded Sep 29, 2026	n/a	127 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 · Sep 29, 2026 · View company records in RevenueBase
23	Web-Atrio	Exact match	Paris, FranceHQ recorded Sep 29, 2026	51-200	111 contacts →
	Exact match “Bienvenue chez WEB-ATRIO, l’#ESN qui change la donne!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Tritux	Exact match	Paris, FranceHQ recorded Sep 29, 2026	51-200	108 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 · Sep 29, 2026 · View company records in RevenueBase
25	Spark-It	Exact match	La Défense 5, FranceHQ recorded Sep 29, 2026	51-200	105 contacts →
	Exact match “Spark-it is an expert in software architecture.” Recorded in the RevenueBase company graph · Sep 29, 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 “custom software development consultants”. 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 25 of 2,708 custom software development consultants based in France

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Custom software development consultants based in France at a glance

As of Sep 29, 2026

31.2%Verified-email coverage

3.1%Mobile-number coverage

9.3Average contacts per company

1-10Median size (employees)

20.8%Largest-city concentration · Paris

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,070

11-50

493

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

3,3420–30

4,26531–60

22061–90

390–180

38180+

Company record updated

Median 88.0d

00–30

5,68531–60

7,51661–90

10,62390–180

1,390180+

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 software development consultants” 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 7,868 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 September 29, 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.

Custom software development consultants by metro

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 software development consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom software development consultants are there based in France?

RevenueBase identified 2,708 company matches for custom software development consultants associated with France as of September 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?

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

Which city has the most custom software development consultants?

Paris leads with 562 company records, followed by Lyon (96) and Toulouse (63).

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 7,868 professional contacts with verified work emails tracked across these 2,708 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 September 29, 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.