Company lists · Data refreshed September 2026

Top 25 Marine software developers based in France

Name: Marine software developers based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 202 companies tracked

RevenueBase identified 202 marine software developers headquartered in France as of September 2026 and tracks 5,441 professional contacts across them, including 1,676 with verified work emails. Marseille is the largest hub.

This list covers marine software 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 28, 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 28, 2026 86% judged on-target in blind review

202Companies

5,441Contacts tracked

1,676Verified emails

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The 25 largest marine software developers based in France

Ranked by team size

Top 25 of 202 marine software developers based in France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marine software 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	Chantiers DE L'atlantique	Partial evidence	Saint-nazaire, FranceHQ checked Sep 28, 2026	1,001-5,000	2,004 contacts →
	Partial evidence “Installée sur la façade Atlantique, Chantiers de l’Atlantique est une entreprise de construction maritime (paquebots, sous-stations…) et de services aux flottes.” Source: RevenueBase Database · checked Sep 28, 2026
2	Geocean	Partial evidence	Cassis, FranceHQ checked Sep 28, 2026	n/a	216 contacts →
	Partial evidence “GEOCEAN is a marine work contractor, based near Marseille, in the south of France, with 30 years experience worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
3	Chantier Naval Couach - CNC	Indirect evidence	Gujan-mestras, FranceHQ checked Sep 28, 2026	201-500	213 contacts →
	Indirect evidence “Couach est un acteur pionnier dans la construction de navires professionnels et de plaisance, comme dans les services navals.” Source: RevenueBase Database · checked Sep 28, 2026
4	Alseamar	Indirect evidence	Rousset, FranceHQ checked Sep 28, 2026	201-500	139 contacts →
	Indirect evidence “Founded in 2015, ALSEAMAR, a subsidiary of the ALCEN Group, develops, designs, operates and maintains high-performance underwater solutions that meet the requirements of…” Source: RevenueBase Database · checked Sep 28, 2026
5	Sirehna	Indirect evidence	Bouguenais, FranceHQ checked Sep 28, 2026	51-200	113 contacts →
	Indirect evidence “SIREHNA is a subsidiary of Naval Group (French naval system integrator).” Source: RevenueBase Database · checked Sep 28, 2026
6	D-Ice Engineering	Indirect evidence	Nantes, FranceHQ checked Sep 28, 2026	11-50	49 contacts →
	Indirect evidence “We are a deeptech company based in France.” Source: RevenueBase Database · checked Sep 28, 2026
7	Hydroconsult Sarl	Partial evidence	Kervignac, FranceHQ checked Sep 28, 2026	11-50	49 contacts →
	Partial evidence “Hydroconsult is a recognized actor in worldwide Hydrographic and Geophysical Survey's assistance and Marine Consulting, with 20 years experience.” Source: RevenueBase Database · checked Sep 28, 2026
8	Maxsea	Partial evidence	Bidart, FranceHQ checked Sep 28, 2026	51-200	41 contacts →
	Partial evidence “MaxSea, the leader in marine navigation, has been at the forefront of innovation in the industry for almost 40 years.” Source: RevenueBase Database · checked Sep 28, 2026
9	Kent Marine Equipment	Partial evidence	Saint-herblain, FranceHQ checked Sep 28, 2026	51-200	39 contacts →
	Partial evidence “Depuis 1974, Kent Marine Equipment accompagne les professionnels du naval et du fluvial.” Source: RevenueBase Database · checked Sep 28, 2026
10	Thalos	Partial evidence	Ploemeur, FranceHQ checked Sep 28, 2026	11-50	38 contacts →
	Partial evidence “Créateur de solutions de communication et d'outils d'analyse innovants pour le monde maritime.” Source: RevenueBase Database · checked Sep 28, 2026
11	MACOR	Indirect evidence	Marseille, FranceHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “MACOR is a company specializing in ship repair and maintenance for 40 years.” Source: RevenueBase Database · checked Sep 28, 2026
12	Opsealog	Partial evidence	Marseille, FranceHQ checked Sep 28, 2026	11-50	35 contacts →
	Partial evidence “Opsealog is a French SaaS company specialized in the Marine Offshore sector.” Source: RevenueBase Database · checked Sep 28, 2026
13	Pixel SUR MER	Partial evidence	Lorient, FranceHQ checked Sep 28, 2026	11-50	31 contacts →
	Partial evidence “16 years of consulting and services: mechatronic systems integration, fiber optic instrumentation, navigation, routing, hardware & software development.” Source: RevenueBase Database · checked Sep 28, 2026
14	Foure Lagadec Marine	Indirect evidence	Le Havre, FranceHQ checked Sep 28, 2026	1,001-5,000	27 contacts →
	Indirect evidence “Héritier du savoir-faire d’ACH Engineering, l’entreprise a évolué au travers de son activité de maintenance des équipements livrés.” Source: RevenueBase Database · checked Sep 28, 2026
15	Tenderlift	Indirect evidence	Canet En Roussillon, FranceHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Tenderlift conçoit des solutions de modularité pour simplifier la vie à bord et la navigation.” Source: RevenueBase Database · checked Sep 28, 2026
16	Seaber	Indirect evidence	Lorient, FranceHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “SEABER is an innovative company that designs and manufactures highly reliable micro-AUVs, for research and commercial applications.” Source: RevenueBase Database · checked Sep 28, 2026
17	Atlantic Propulsion Service	Indirect evidence	St Brevin Les Pins, FranceHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Atlantic Propulsion Service is a company based in France near the Atlantic Coast close to Saint Nazaire.” Source: RevenueBase Database · checked Sep 28, 2026
18	Geps Techno	Partial evidence	Guérande, FranceHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “GEPS Techno builds and operates autonomous, connected offshore platforms serving as persistent floating infrastructure for maritime monitoring & surveillance, along with other…” Source: RevenueBase Database · checked Sep 28, 2026
19	GOIOT	Partial evidence	St Herblain, FranceHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “GOIOT know-how for quality aluminium, stainless and plastics parts for marine applications is renowned since 1928.” Source: RevenueBase Database · checked Sep 28, 2026
20	D2m Engineering	Partial evidence	Six Fours Les Plages, FranceHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “At d2m, our expert team of marine engineers, naval architects, and offshore contractors have been committed to crafting innovative solutions for complex maritime projects for over…” Source: RevenueBase Database · checked Sep 28, 2026
21	Delair Marine	Partial evidence	Marseille, FranceHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Delair Marine is the company behind Seasam, the world's first compact autonomous underwater drone made for professional applications.” Source: RevenueBase Database · checked Sep 28, 2026
22	Gwen Service	Partial evidence	Les Sables D'olonne, FranceHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Basée aux Sables d’Olonne en Vendée, GWEN MARINE SERVICE, Centre VOLVO PENTA, est spécialisé dans la maintenance et la réparation navale, ainsi que la vente de moteur.” Source: RevenueBase Database · checked Sep 28, 2026
23	Marine Tech	Partial evidence	Six Fours Les Plages, FranceHQ checked Sep 28, 2026	1-10	17 contacts →
	Partial evidence “Plus de 20 années d'expérience dans les opérations maritimes - Créée par les fondateurs de Nymphea Environnement, la société MARINE TECH propose les activités suivantes-…” Source: RevenueBase Database · checked Sep 28, 2026
24	Marine Weather Intelligence MWI	Partial evidence	Auray, FranceHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Marine Weather Intelligence (MWI) is a deep tech company that uses artificial intelligence and its expertise to improve weather routing and safety at sea.” Source: RevenueBase Database · checked Sep 28, 2026
25	AJ Marine	Partial evidence	Valbonne, FranceHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “AJ Marine, an official Caterpillar AMD, are experienced, quick response marine engineers that can attend to your yacht anywhere, anytime.” Source: RevenueBase Database · checked Sep 28, 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: marine software 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 marine software developers.
Partial evidence: Its own public description names part of marine software developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine software 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 202 marine software developers based in France

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Marine software developers based in France at a glance

As of Sep 28, 2026

30.8%Verified-email coverage

26.9Average contacts per company

1-10Median size (employees)

4.5%Largest-city concentration · Marseille

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

126

11-50

51-200

201-500

1,001-5,000

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 202 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 marine software 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 “marine software 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 marine software 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 marine software 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, 1,676 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 28, 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 marine software 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 marine software developers are there based in France?

RevenueBase identified 202 marine software 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?

Chantiers DE L'atlantique, headquartered in Saint-Nazaire, tops this list with the largest team on record.

Which city has the most marine software developers?

Marseille leads with 9 headquartered companies, followed by Paris (7) and Antibes (6).

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 1,676 verified decision-maker contacts tracked across these 202 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 28, 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.