Company lists · Data verified August 2026

Top 25 Custom software development agencies based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,983 companies tracked

There are 1,983 custom software development agencies headquartered in France (RevenueBase, August 2026). RevenueBase tracks 11,836 professional contacts across them, including 3,647 with verified work emails and 374 with mobile numbers. Paris is the largest hub.

This list covers custom software development agencies headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,983Companies

11,836Contacts tracked

3,647Verified emails

374Mobile numbers

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The 25 largest custom software development agencies based in France

Ranked by team size

Top 25 of 1,983 custom software development agencies based in France, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	SSW	Strasbourg	51-200	279	53
2	Kaizen Solutions KZS	Paris	201-500	268	173
3	Takima	Bagneux	51-200	219	108
4	Galadrim	Paris	51-200	166	1
5	SCUB	Bordeaux	51-200	125	47
6	Spark-It	Courbevoie	51-200	105	46
7	DIROX	Paris	51-200	105	9
8	Nextoo	Roubaix	51-200	96	60
9	Castelis	Ivry Sur Seine	51-200	95	47
10	6tm	Rennes	51-200	92	73
11	4sh	Le Haillan	51-200	85	67
12	SERLI	Niort	51-200	80	29
13	Thetribe	Nantes	51-200	79	45
14	Square1	Mougins	51-200	76	42
15	Bocasay	Neuilly-Sur-Seine	51-200	76	29
16	Ipanova	Blagnac	51-200	70	52
17	Exomind	Boulogne-Billancourt	51-200	70	32
18	Désirade	Lyon	51-200	69	41
19	Elephant Technologies	Nantes	51-200	65	11
20	Ipsosenso	Paris	51-200	64	48
21	Arkeup	Paris	501-1,000	64	25
22	Diggers	Lille	51-200	58	32
23	Kreactive	Paris	51-200	53	21
24	BILOG	Versailles	51-200	51	11
25	Groupe Koncept Komet	Toulouse	51-200	50	4

Showing 25 of 1,983 custom software development agencies based in France

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Custom software development agencies based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 363 HQs

374Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

1,568

11-50

329

51-200

201-500

501-1,000

1,001-5,000

10001+

Custom software development agencies by metro

Metro	Companies
Custom software development agencies in Paris	363
Custom software development agencies in Lyon	80
Custom software development agencies in Toulouse	52
Custom software development agencies in Bordeaux	50
Custom software development agencies in Marseille	31
Custom software development agencies in Nantes	29
Custom software development agencies in Strasbourg	28

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “custom software development agencies”, with match quality audited by blind human judging, and headquartered in France.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 1,983 custom software development agencies headquartered in France as of August 2026 (RevenueBase).

What is the largest company on this list?

SSW, headquartered in Strasbourg, tops this list with the largest team on record.

Which city has the most custom software development agencies?

Paris leads with 363 headquartered companies, followed by Lyon (80) and Toulouse (52).

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 3,647 verified decision-maker contacts tracked across these 1,983 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.