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SaaS companies headquartered in the Yvelines department

Tamtam tracks 49 SaaS companies headquartered in the Yvelines department. This list ranks the 30 largest by number of employees on LinkedIn, led by Dassault Systèmes, SELL and Avanteam. Their median headcount is 32. Half of them were founded in 2009 or later. The most common headquarters are Versailles (6), Velizy-Villacoublay (5) and Montigny-le-Bretonneux (3).

🇫🇷 Yvelines30 companiesUpdated Nov 11, 2026

The SaaS companies in Yvelines are primarily software development firms, ranging from large groups to mid-sized companies, with a focus on specialized business solutions. Dassault Systèmes, with over 27,000 employees, offers a platform for sustainable innovation across industries. SELL provides a cloud platform for product information management, while Avanteam specializes in BPM and ECM solutions with AI. Coptis focuses on advanced technology for Cosmetic R&D, and Veryswing offers SaaS management software for IT services.

A notable pattern among these companies is the concentration of headquarters in specific towns. Vélizy-Villacoublay hosts Dassault Systèmes, Avanteam, FraudBuster, and Vistory. Croissy-sur-Seine is home to SELL and Coptis, while Versailles counts COSIUM and Pomelo-Paradigm among its companies. This suggests a localized cluster of technological expertise within the department.

#CompanyIndustryHeadquarters EmployeesFounded
1
Dassault Systèmes3ds.com

Pioneering virtual worlds since 1981, this company offers a platform enabling customers across industries to collaborate, imagine, and create sustainable innovations for real-life impact.

Software Development 🇫🇷 Velizy-Villacoublay 27,414 n/a
2
SELLsell-marketing.com

A French independent company helps businesses master product information to optimize their sales strategy using the SELL BASE cloud platform

Software Development 🇫🇷 Croissy-sur-Seine 587 2006
3
Avanteamavanteam.fr

A software editor specializing in BPM and ECM solutions, using innovative technologies like AI, serving over 500 customers in Europe

Software Development 🇫🇷 Velizy-Villacoublay 104 2003
4
Ardansardans.fr

Ardans specializes in knowledge management solutions, offering consulting, training, information systems, and software for organizations across various industries and sectors

Business Consulting and Services 🇫🇷 Montigny-le-Bretonneux 69 1999
5
COSIUMcosium.com

Cloud-based software and hardware solutions for healthcare industry, offering ICT outsourcing, Business Intelligence tools, and custom-designed electronics for optical retail and domiciliary care

Software Development 🇫🇷 Versailles 65 2003
6
Coptiscoptis.com

A company specializing in advanced technology solutions for Cosmetic R&D, offering software for product development, compliance management, and toxicology information

Software Development 🇫🇷 Croissy-sur-Seine 58 1999
7
Pomelo-Paradigmpomelo-paradigm.com

An innovative company designing collaborative applications with simple tools to enhance human productivity across all media platforms

Software Development 🇫🇷 Versailles 47 2013
8
Hesionhesion.fr

Hesion digitizes parking management systems to simplify complexity, offers plug-and-play solutions with real-time decision support, and provides expertise in operation and maintenance

Internet Publishing 🇫🇷 Achères 46 1975
9
Allshareallshare.fr

Helps HR, C&B, and Finance teams align workforce with company strategy and build compensation policies to attract, retain, and engage employees.

Software Development 🇫🇷 Guyancourt 46 1992
10
PHOENIX FLEET EXPERTphoenix-fleetexpert.com

PHOENIX FLEET EXPERT offers fleet management solutions including outsourcing, software, and shared management to optimize clients' vehicle fleets effectively

Software Development 🇫🇷 Méré 45 2011
11
FraudBusterfraudbuster.mobi

Antifraud services for mobile network operators worldwide with disruptive approach and unique solutions like SIMBuster, and MoMoSe.

Telecommunications 🇫🇷 Velizy-Villacoublay 39 2010
12
Vistoryvistory.com

Development of cybersecurity software leveraging blockchain, cloud, and big data technologies to enable digital transformation and industry disruption.

Program Development 🇫🇷 Velizy-Villacoublay 38 2015
13
Veryswingveryswing.com

French editor providing SaaS management software for IT services, consulting firms, design offices, and umbrella companies, ensuring high security and regulatory compliance.

Software Development 🇫🇷 Versailles 36 2012
14
Comerceacomercea.fr

Digital platform boosting city centers & local shops, promoting in-store purchases through loyalty programs, sales promotions, gift vouchers, and online options for convenience

Technology, Information and Internet 🇫🇷 Montesson 34 2014
15
MédiFirstmedifirst.com

Dedicated to serving medical professionals in Assisted Reproduction (ART) and Genetics, the company provides an EMR system to streamline patient journeys and boost operational efficiency.

Software Development 🇫🇷 Montigny-le-Bretonneux 32 2002

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16
ULiTusersloveit.com

A software publisher offering a cloud-based platform, negOptim, for cost-effective data exchanges, business processes, and collaboration between suppliers and retailers

IT Services and IT Consulting 🇫🇷 Le Port-Marly 29 2015
17
INOVATICinovatic.fr

French specialist in automated data extraction from structured documents for businesses, focusing on financial industry professionals, optimizing client journeys for online financing offers.

IT Services and IT Consulting 🇫🇷 Montigny-le-Bretonneux 25 2000
18
MonEcho - logiciel médicalmonecho.com

Provides an online software solution for ultrasound practitioners and hospitals, integrating with all ultrasound machines and ensuring data security and efficient workflow.

Software Development 🇫🇷 Plaisir 25 2009
19
EVOGEST LOGESTevogest.fr

EVOGEST is your partner for integrated ERP solutions and computer hardware in Orgeval, France, specializing in business management and IT equipment

Software Development 🇫🇷 Orgeval 24 2007
20
MAIDIS SASmaidis.fr

Development and marketing of comprehensive electronic health record software for medical and dental practices, hospitals, and health centers.

Software Development 🇫🇷 Chatou 19 2003
21
Gestimumgestimum.com

Manufacturer of user-friendly ERP software, Gestimum, tailored for 20-500 employee companies Constantly updates with new features and offers related services

Software Development 🇫🇷 Rambouillet 19 2004
22
KERLOGkerlog.com

Software publisher specializing in waste management for environmental and recycling industries, serving over 350 clients with 4,000+ users across France and overseas territories

Software Development 🇫🇷 Le Pecq 19 2003
23
LINKVIEWlinkview.fr

Provider of connected security solutions, utilizing patented technology for remote access supervision Specializing in monitoring, repairing, and servicing access installations for doors, gates, barriers, and parking systems

Computer and Network Security 🇫🇷 Le Pecq 18 2018
24
TomTom Telematics Francetomtom.com

A leading international telematics solutions provider, offering fleet management, vehicle performance optimization, fuel savings, and driver support services to businesses worldwide

IT Services and IT Consulting 🇫🇷 Noisy-le-Roi 17 n/a
25
A-Systems SASa-systems.com

Develops and sells advanced feed formulation software, Allix, for the animal feed industry, offering features like optimization, ration calculation, and quality control.

Software Development 🇫🇷 Versailles 17 2001
26
Kiwee.carekiwee.care

Simplifies healthcare payments and administrative processes, supports patients and professionals with an intuitive, secure digital solution and attentive service.

Hospitals and Health Care 🇫🇷 Chatou 17 2021
27
Wakanda.ious.4d.com

Revolutionizing development with an open-source JavaScript platform for building and maintaining mobile and web applications quickly and effectively

Software Development 🇫🇷 Le Pecq 15 2014
28
Intuitemintuitem.com

Company creates cybersecurity software, focusing on governance, risk management, and compliance, using expertise in cloud, data, and AI to help organizations manage cyber challenges.

IT Services and IT Consulting 🇫🇷 Velizy-Villacoublay 14 2018
29
Entropyentropy.fr

Develops predictive and decision-making AI models, aiding businesses and territories in piloting activities, including multimodal mobility observation and anticipating point of interest footfall.

IT Services and IT Consulting 🇫🇷 Versailles 13 2019
30
LIAISON VOCALE

Develops and sells specialized CRM software for voice interactions, offering virtual voice-activated switchboards, biometric voice authentication, and intelligent conversational agents.

Software Development 🇫🇷 Versailles 12 2013

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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