# List of cybersecurity companies in France Tamtam tracks 958 cybersecurity companies headquartered in France. This list ranks the 100 largest by number of employees on LinkedIn, led by Capgemini, Orange and Airbus. Their median headcount is 643. Half of them were founded in 2000 or later. The most common headquarters are Paris (25), Boulogne-Billancourt (4) and Puteaux (4). This list covers some of the largest cybersecurity companies in France. The companies are mostly large groups in IT services, telecommunications, and defense, with a strong focus on digital transformation, cloud, and security solutions. These include Capgemini, which delivers end-to-end services, Orange, a global telecommunications operator, Airbus, a pioneer in sustainable aerospace, and Thales, specializing in defense and digital identity. A notable pattern is the concentration of headquarters in the Paris metropolitan area, with many key players located in Paris, Issy-les-Moulineaux, Meudon, and Bezons. This suggests a clustering of major cybersecurity and IT operations around the capital. πŸ‡«πŸ‡· France Β· 100 companies Β· Updated Nov 12, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Capgemini](https://www.tamtam.ai/c/capgemini-paris) (capgemini.com)
Imagine future organizations, making it real with AI, technology, and people, delivering end-to-end services and solutions across strategy, technology, design, engineering and business operations | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 342,989 | | | 2 | [Orange](https://www.tamtam.ai/c/orange-issy-les-moulineaux) (orange.com)
A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries | Telecommunications | πŸ‡«πŸ‡· Issy-les-Moulineaux | 146,935 | | | 3 | [Airbus](https://www.tamtam.ai/c/airbus) (airbus.com)
Pioneers sustainable aerospace, designs and manufactures commercial aircraft, offers space systems, defense, security, and provides civil and military rotorcraft solutions globally. | Aviation and Aerospace Component Manufacturing | πŸ‡«πŸ‡· Blagnac | 88,309 | 2014 | | 4 | [Atos](https://www.tamtam.ai/c/atos) (atos.net)
Provides tailored AI-powered, end-to-end solutions for all industries, specializing in cybersecurity, cloud, and high-performance computing, fostering a secure, decarbonized future. | IT Services and IT Consulting | πŸ‡«πŸ‡· 95877 Bezons | 85,294 | | | 5 | [Thales](https://www.tamtam.ai/c/thales) (thalesgroup.com)
Multinational specializing in cybersecurity, defense, aerospace, digital identity, and secure communications for governments and industries. | Defense and Space Manufacturing | πŸ‡«πŸ‡· Meudon | 65,031 | | | 6 | [Sopra Steria](https://www.tamtam.ai/c/sopra-steria) (soprasteria.com)
Offers consulting, digital services, and solutions, assisting large companies and organizations with digital transformation, improving competitiveness through technology and collaboration. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 47,609 | | | 7 | [Orange Business](https://www.tamtam.ai/c/orange-business) (orange-business.com)
Leading European network and digital integrator leveraging expertise in next-generation connectivity, cloud, and cybersecurity solutions for positive impact on customers and planet. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 28,626 | | | 8 | [IDEMIA](https://www.tamtam.ai/c/idemia) (idemia.com)
Provides payment, connectivity, cybersecurity, and biometric solutions to financial institutions, mobile operators, and public security organizations globally. | Software Development | πŸ‡«πŸ‡· Courbevoie | 12,233 | | | 9 | [Eviden](https://www.tamtam.ai/c/eviden) (eviden.com)
Eviden is a global leader in digital transformation, offering expertise in digital, cloud, data, advanced computing, and security solutions to industries worldwide | IT Services and IT Consulting | πŸ‡«πŸ‡· Bezons | 10,793 | | | 10 | [SPIE France](https://www.tamtam.ai/c/spie-france) (spie.fr)
Global actor in energy, digital, and industrial transitions, offering concrete solutions for decarbonizing buildings, industries, and territories through various technical services. | IT Services and IT Consulting | πŸ‡«πŸ‡· Cergy-Pontoise | 9,833 | | | 11 | [Thales Cyber and Digital](https://www.tamtam.ai/c/thales-cyber-and-digital) (thalesgroup.com)
Design and deliver digital identification, data protection products, software, and services for secure digital services globally. | IT Services and IT Consulting | πŸ‡«πŸ‡· Meudon | 8,199 | 2006 | | 12 | [Astek](https://www.tamtam.ai/c/astek) (astekgroup.fr)
Supports clients with high-value service, deep technical expertise across technology, operations, and engineering, focusing on sustainable digital transformation with humans at the core. | IT Services and IT Consulting | πŸ‡«πŸ‡· Boulogne-Billancourt | 6,035 | 1988 | | 13 | [Orange Cyberdefense](https://www.tamtam.ai/c/orange-cyberdefense) (orangecyberdefense.com)
Expert cybersecurity business unit of the Orange Group. They are a leading security provider, striving to build a safer digital society. | IT Services and IT Consulting | πŸ‡«πŸ‡· Nanterre | 4,274 | | | 14 | [SFR Business](https://www.tamtam.ai/c/sfr-business) (sfrbusiness.fr)
Provides innovative services supporting company growth and digital transformation. Offers high-performance fixed and mobile connectivity and ICT solutions to businesses and public administrations. | Telecommunications | πŸ‡«πŸ‡· Paris | 3,520 | 2008 | | 15 | [Dekra France](https://www.tamtam.ai/c/dekra-france) (dekra.fr)
Inspection, certification, risk management, audits, training, and consulting services for automotive, transport, industry, environment, and safety sectors. | Environmental Services | πŸ‡«πŸ‡· Le Plessis Robinson | 3,188 | 1925 | | 16 | [DOCAPOSTE](https://www.tamtam.ai/c/docaposte) (docaposte.com)
Supports companies and public institutions in digital transformation, providing secure, simple digital experiences, processing sensitive data, and ensuring digital independence with regulatory compliance. | IT Services and IT Consulting | πŸ‡«πŸ‡· Ivry-sur-Seine | 3,076 | 2007 | | 17 | [Exclusive Networks](https://www.tamtam.ai/c/exclusive-networks) (exclusive-networks.com)
Global cybersecurity specialist driving transition to a trusted digital future, offering distribution services with innovative technologies, business models, and worldwide reach | Computer and Network Security | πŸ‡«πŸ‡· Paris | 3,021 | 2003 | | 18 | [CS GROUP](https://www.tamtam.ai/c/cs-group) (cs-soprasteria.com)
Designs, builds, deploys, and maintains critical systems with innovative solutions and products, ensuring operational efficiency and security for client missions. | IT Services and IT Consulting | πŸ‡«πŸ‡· Le Plessis Robinson | 2,968 | 1968 | | 19 | [SPIE ICS](https://www.tamtam.ai/c/spie-ics) (spie.fr)
Supports digital transformation for businesses with ICT solutions, providing expertise in IT infrastructure, cloud, cybersecurity, and data & IoT for enhanced performance and user well-being. | IT Services and IT Consulting | πŸ‡«πŸ‡· Malakoff | 2,930 | 2001 | | 20 | [IN Groupe](https://www.tamtam.ai/c/in-groupe) (ingroupe.com)
Provides identity solutions, secure digital services integrating electronics and biometrics for states, citizens, and businesses, ensuring digital sovereignty. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 1,852 | 1538 | | 21 | [Airbus Protect](https://www.tamtam.ai/c/airbus-protect) (airbus.com)
A subsidiary of Airbus specializing in cybersecurity, safety, and sustainability services, offering advisory, consulting, training, and software solutions for risk management | Business Consulting and Services | πŸ‡«πŸ‡· Blagnac | 1,614 | | | 22 | [Visiativ](https://www.tamtam.ai/c/visiativ) (visiativ.com)
Delivers smarter working methods for agility, efficiency, and collaboration. Provides digital tools and practices, driving sustainable performance for businesses through tailored roadmaps. | IT Services and IT Consulting | πŸ‡«πŸ‡· Lyon | 1,578 | 1987 | | 23 | [HeadMind Partners](https://www.tamtam.ai/c/headmind-partners) (headmind.com)
Advises major companies on cybersecurity, digital projects, and Artificial Intelligence, with expertise in digital risks. | Business Consulting and Services | πŸ‡«πŸ‡· Paris | 1,500 | 2000 | | 24 | [SCC France](https://www.tamtam.ai/c/scc-france) (scc.com)
Provides comprehensive IT solutions, including cybersecurity, digital workplace, and hybrid infrastructure, enabling businesses to optimize operations and achieve their goals. | IT Services and IT Consulting | πŸ‡«πŸ‡· Nanterre | 1,422 | 1975 | | 25 | [SOC LLC](https://www.tamtam.ai/c/soc-llc) (soc-usa.com)
Provides global mission support solutions, including security, cyber security, canine services, and base operations for government agencies and Fortune 500 companies worldwide. | Defense and Space Manufacturing | πŸ‡«πŸ‡· Chantilly | 1,407 | | | 26 | [RSM France](https://www.tamtam.ai/c/rsm-france) (rsm.global)
International network providing audit, accounting, and consulting services through eighteen regional locations with over thirteen hundred employees and ninety partners delivering tailored solutions. | Accounting | πŸ‡«πŸ‡· Paris | 1,398 | | | 27 | [SERMA Group](https://www.tamtam.ai/c/serma-group) (serma.com)
An independent, international platform specializing in electronics solutions and services for high-stress environments, offering expertise in 5 core business lines | Business Consulting and Services | πŸ‡«πŸ‡· Pessac | 1,268 | 1991 | | 28 | [XEFI](https://www.tamtam.ai/c/xefi) (xefi.fr)
Provides comprehensive IT services for small and medium businesses, including maintenance, cloud, security, and digitalization, across Europe with over 200 agencies. | IT Services and IT Consulting | πŸ‡«πŸ‡· Rillieux-la-Pape | 1,213 | 1997 | | 29 | [NXO France](https://www.tamtam.ai/c/nxo-france) (nxo.eu)
Independent leader in French Telecom integration, undertaking complex projects, anticipating customer needs, attracting talent, and focusing on well-done work. | IT Services and IT Consulting | πŸ‡«πŸ‡· Puteaux | 1,200 | | | 30 | [Axians France](https://www.tamtam.ai/c/axians-france) (axians.fr)
Supports clients with digital infrastructure and solutions, covering applications, data, networks, cloud, telecom, and cybersecurity through consulting, design, integration, and services. | IT Services and IT Consulting | πŸ‡«πŸ‡· Nanterre | 1,137 | 1999 | | 31 | [Marlink](https://www.tamtam.ai/c/marlink) (marlink.com)
Designs, builds, and manages hybrid network solutions, combining satellite, terrestrial, and digital services to optimize remote business operations with digital technologies. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 1,127 | 1940 | | 32 | [Fime](https://www.tamtam.ai/c/fime) (fime.com)
Enables creation, launch of secure solutions across payments, smart mobility, and digital identity. Provides strategic consulting, testing expertise globally. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 1,108 | 1962 | | 33 | [TIBCO](https://www.tamtam.ai/c/tibco-beaupreau-en-mauges) (tibco.fr)
Provides IT solutions, including digital workplace, cloud, cybersecurity, data, and AI, focusing on technological performance, data sovereignty, and environmental responsibility, with strong local presence. | IT Services and IT Consulting | πŸ‡«πŸ‡· Saint-Aignan-de-Grand-Lieu | 1,069 | 1985 | | 34 | [IDEMIA Public Security](https://www.tamtam.ai/c/idemia-public-security) (idemia.com)
Provides biometric identity platform for public security, offering secure credentials and document authentication for citizens as they interact, pay, connect, and travel. | IT Services and IT Consulting | πŸ‡«πŸ‡· Courbevoie | 1,056 | | | 35 | [OWN.Security](https://www.tamtam.ai/c/own-security) (own.security)
Pure player in cybersecurity, offering auditing, consulting, threat intelligence, incident response, and managed SOC services to organizations of all sizes. | Computer and Network Security | πŸ‡«πŸ‡· Paris | 947 | 2008 | | 36 | [Nomios Group](https://www.tamtam.ai/c/nomios-group) (nomios.com)
Designs, secures, and manages digital infrastructures, developing innovative cybersecurity and networking solutions through consulting, managed, and professional services for organizations. | Computer and Network Security | πŸ‡«πŸ‡· Boulogne-Billancourt | 887 | 2004 | | 37 | [ITS Group S.A.](https://www.tamtam.ai/c/its-group-s-a) (itsgroup.com)
Supports companies in digital transformation projects, offering turnkey IT solutions and managed services in cloud, mobility, infrastructure, cybersecurity, and data management. | IT Services and IT Consulting | πŸ‡«πŸ‡· Boulogne-Billancourt | 868 | 1997 | | 38 | [ANSSI - Agence nationale de la sΓ©curitΓ© des systΓ¨mes d'information](https://www.tamtam.ai/c/anssi-agence-nationale-de-la-securite-des-systemes-d-information) (cyber.gouv.fr)
National authority for cybersecurity and cyber defense, protecting the nation from cyberattacks by defending critical systems, sharing knowledge, and regulating cybersecurity. | Computer and Network Security | πŸ‡«πŸ‡· Paris | 867 | | | 39 | [SQUAD - Cabinet de conseils et dexpertises](https://www.tamtam.ai/c/squad-cabinet-de-conseils-et-dexpertises) (squadgroup.com)
Offers cybersecurity consulting and expert services, adapting to evolving IT practices like cloud computing and DevOps for major companies. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 803 | 2011 | | 40 | [Ledger](https://www.tamtam.ai/c/ledger) (ledger.com)
Develops products and services for individuals and companies to securely buy, store, swap, grow, and manage crypto assets, including hardware wallets. | Computer and Network Security | πŸ‡«πŸ‡· Paris | 796 | 2014 | | 41 | [OCI Informatique](https://www.tamtam.ai/c/oci-informatique) (oci.fr)
OCI is a local IT solutions company for SMEs with 8 branches in the Grand Est region, offering personalized and diverse services including networking, telecom, cloud, and web solutions | IT Services and IT Consulting | πŸ‡«πŸ‡· Partout en France | 796 | 1979 | | 42 | [Claranet France](https://www.tamtam.ai/c/claranet-france) (claranet.com)
Leading European provider of managed hosting, network, and communication services, serving thousands of businesses across multiple countries and data centers. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 750 | 1996 | | 43 | [QESTIT Group](https://www.tamtam.ai/c/qestit-group) (qestit.com)
Specializing in software testing and quality assurance for high demand industries in Europe, with 900+ employees across 7 countries Transforming good software into perfect solutions | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 749 | 1998 | | 44 | [adista](https://www.tamtam.ai/c/adista) (adista.fr)
Provides comprehensive IT services, including hosting, telecommunications, and system integration, for SMEs, public entities, and healthcare organizations, offering high-speed internet access and disaster recovery. | IT Services and IT Consulting | πŸ‡«πŸ‡· MaxΓ©ville | 745 | 1981 | | 45 | [YesWeHack](https://www.tamtam.ai/c/yeswehack) (yeswehack.com)
Bug Bounty and Vulnerability Management Platform connecting organizations with ethical hackers for website, app, and infrastructure security, with ISO certifications | Computer and Network Security | πŸ‡«πŸ‡· Paris | 744 | 2015 | | 46 | [I-TRACING](https://www.tamtam.ai/c/i-tracing) (i-tracing.com)
This company offers comprehensive cybersecurity services globally, managing cyber risks, anticipating threats, ensuring system security, and providing rapid incident response to minimize attack consequences. | Computer and Network Security | πŸ‡«πŸ‡· Courbevoie | 683 | 2005 | | 47 | [NEVERHACK](https://www.tamtam.ai/c/neverhack) (neverhack.com)
Provides innovative and ethical cybersecurity solutions, supporting businesses and individuals in protecting their data through consulting, training, risk assessment, and AI-driven innovations. | Computer and Network Security | πŸ‡«πŸ‡· Paris | 672 | 2021 | | 48 | [Advens](https://www.tamtam.ai/c/advens) (advens.com)
Leading cybersecurity firm protecting organizations 24/7 from cyber attackers, supporting impact projects through an endowment fund. | Computer and Network Security | πŸ‡«πŸ‡· Paris | 652 | 2000 | | 49 | [Hub One](https://www.tamtam.ai/c/hub-one) (hubone.fr)
Hub One, a technology group, provides digital evolution services for businesses in various sectors They offer connectivity solutions for communication, networking, and mobility | Telecommunications | πŸ‡«πŸ‡· Tremblay-en-France | 645 | 2001 | | 50 | [mipih](https://www.tamtam.ai/c/mipih) (mipih.fr)
Certified digital healthcare provider supporting medical and social institutions with payroll processing and digital transformation across multiple French regions. | IT Services and IT Consulting | πŸ‡«πŸ‡· Toulouse | 643 | 1993 | | 51 | [Free Pro](https://www.tamtam.ai/c/free-pro) (freepro.com)
Provides telecommunications, cybersecurity, IT, and cloud solutions for all businesses, from small to large, including public organizations, ensuring data connectivity and security. | Telecommunications | πŸ‡«πŸ‡· Marseille | 630 | 2001 | | 52 | [Tenexa](https://www.tamtam.ai/c/tenexa) (tenexa.com)
Offers digital services through subsidiaries, focusing on Cloud, cybersecurity, and global IT outsourcing from data centers to users, supporting client innovation strategies. | IT Services and IT Consulting | πŸ‡«πŸ‡· Roissy CDG Cedex | 624 | 1985 | | 53 | [Groupe Sigma](https://www.tamtam.ai/c/groupe-sigma-la-chapelle-sur-erdre) (sigma.fr)
The company aims to enhance performance through digital impact, innovate eco-friendly solutions, and build digital ecosystems with expert dialogue | IT Services and IT Consulting | πŸ‡«πŸ‡· La Chapelle-sur-Erdre | 607 | 1972 | | 54 | [CNPP](https://www.tamtam.ai/c/cnpp) (cnpp.com)
Develops risk prevention solutions, including cybersecurity, safety, climate, occupational health, fire, explosion, and crisis management, through consulting, training, testing, inspection, certification, and publishing. | Security and Investigations | πŸ‡«πŸ‡· Saint Marcel | 601 | 1987 | | 55 | [CHEOPS TECHNOLOGY](https://www.tamtam.ai/c/cheops-technology-canejan) (cheops-technology.com)
Specializing in secure IT infrastructure, this company is a leader in Cloud Computing in France With 4 divisions, they offer expertise in Cloud, Cybersecurity, and Technology Modernization | IT Services and IT Consulting | πŸ‡«πŸ‡· CanΓ©jan | 601 | 1998 | | 56 | [oXya](https://www.tamtam.ai/c/oxya) (oxya.com)
Leading provider of SAP technical services, cloud solutions, and hosting for midsize and global organizations, enhancing efficiency and flexibility of SAP infrastructure worldwide | IT Services and IT Consulting | πŸ‡«πŸ‡· Issy-les-Moulineaux | 586 | | | 57 | [Devoteam \| Google Cloud Partner](https://www.tamtam.ai/c/devoteam-google-cloud-partner) (gcloud.devoteam.com)
Provides innovative Google Cloud solutions across AI, IT modernization, security, and work transformation, with expertise in migrating users and assisting organizations. | IT Services and IT Consulting | πŸ‡«πŸ‡· Levallois-Perret | 579 | | | 58 | [Nexpublica](https://www.tamtam.ai/c/nexpublica) (nexpublica.com)
Develops innovative, secure software solutions for public, parapublic, and private sectors, supporting over 4,000 public and 1,200 private organizations. | Software Development | πŸ‡«πŸ‡· Clichy | 559 | | | 59 | [ChapsVision](https://www.tamtam.ai/c/chapsvision) (chapsvision.com)
French software company specializing in data intelligence and AI, providing industry-specific solutions for diverse sectors, supporting digital transformation globally. | Software Development | πŸ‡«πŸ‡· Suresnes | 558 | 2019 | | 60 | [Klanik](https://www.tamtam.ai/c/klanik) (klanik.com)
Provides IT engineering consulting, assisting partners with digital and technological projects, leveraging expert talent across various technological verticals globally for digital transformation. | IT Services and IT Consulting | πŸ‡«πŸ‡· Marseille | 548 | 2011 | | 61 | [CELESTE](https://www.tamtam.ai/c/celeste-champs-sur-marne) (celeste.fr)
A national provider of internet access and connectivity solutions for businesses, offering innovative, high-availability, and eco-friendly services such as fiber optic connections and cloud hosting | Telecommunications | πŸ‡«πŸ‡· Champs-sur-Marne | 537 | 2001 | | 62 | [Ekinops](https://www.tamtam.ai/c/ekinops) (ekinops.com)
Provides open, trusted, and innovative network connectivity solutions. Delivers high value-added software-driven solutions for optical transport and virtualized managed enterprise services. | Telecommunications | πŸ‡«πŸ‡· Lannion | 509 | 2003 | | 63 | [Groupe ADSN](https://www.tamtam.ai/c/groupe-adsn) (groupeadsn.fr)
A group of experts in digital technology and data protection providing tools and solutions for notaries and regulated professions to secure sensitive data | IT Services and IT Consulting | πŸ‡«πŸ‡· Venelles | 501 | 1983 | | 64 | [Paritel](https://www.tamtam.ai/c/paritel) (paritel.fr)
Paritel, a telecom operator for small businesses, prioritizes performance and individual talent while fostering teamwork and career development for its 700 employees | Telecommunications | πŸ‡«πŸ‡· Bois-Colombes | 501 | 1991 | | 65 | [HENSOLDT in France](https://www.tamtam.ai/c/hensoldt-in-france) (hensoldt.net)
Manufactures and maintains critical electronic products, cyber security equipment, and energy solutions for aerospace, defence, energy, and transport sectors in France. | Computers and Electronics Manufacturing | πŸ‡«πŸ‡· Toulouse | 501 | 1982 | | 66 | [HervΓ© Schauer Consultants (HSC)](https://www.tamtam.ai/c/herve-schauer-consultants-hsc) (hs2.fr)
Provides information security consulting, audits, penetration tests, risk management, and training services to secure diverse infrastructures and systems. | Computer and Network Security | πŸ‡«πŸ‡· Neuilly-sur-Seine | 500 | 1989 | | 67 | [SIB \[numΓ©rique, santΓ© et secteur public\]](https://www.tamtam.ai/c/sib-numerique-sante-et-secteur-public) (sib.fr)
Innovative cooperative in digital health and public sector, serving 620+ institutions in modernizing their IT systems with a wide range of services and expertise | IT Services and IT Consulting | πŸ‡«πŸ‡· Rennes | 499 | 1993 | | 68 | [Equans Digital](https://www.tamtam.ai/c/equans-digital) (equans-digital.com)
Connects operational and information technology systems to structure infrastructure data, improving energy efficiency, asset availability, and security through cybersecurity and applied artificial intelligence. | IT Services and IT Consulting | πŸ‡«πŸ‡· Courbevoie | 499 | | | 69 | [Thales Cybersecurity Services](https://www.tamtam.ai/c/thales-cybersecurity-services) (thalesgroup.com)
Delivering cybersecurity products and services. Protecting organizations by identifying, detecting, and responding to cyber threats. Specializing in data security and digital infrastructure protection for diverse sectors. | Computer and Network Security | πŸ‡«πŸ‡· Meudon | 495 | 2018 | | 70 | [QUADRIA](https://www.tamtam.ai/c/quadria) (heliaq.fr)
French-owned company focused on network and telecom architectures, infrastructure solutions, cloud computing, and management solutions for SMEs across France, Germany, and Switzerland. | IT Services and IT Consulting | πŸ‡«πŸ‡· Le Haillan | 495 | 1957 | | 71 | [Scutum France](https://www.tamtam.ai/c/scutum-france) (scutum-group.com)
Providing customized safety and security solutions including electronic security, defense, and fire prevention for governments and organizations. | Security and Investigations | πŸ‡«πŸ‡· Rungis | 492 | 1989 | | 72 | [Forward Global](https://www.tamtam.ai/c/forward-global) (forwardglobal.com)
Anticipating managing risks, addressing crises conflicts. Delivering services solutions integrating human expertise with technology for diverse risks. | Business Consulting and Services | πŸ‡«πŸ‡· Paris | 486 | 2002 | | 73 | [Linkt](https://www.tamtam.ai/c/linkt) (linkt.fr)
Provides managed services, telecom, and cybersecurity expertise for mid-sized and large companies, and local authorities, to optimize and secure their digital infrastructure. | Telecommunications | πŸ‡«πŸ‡· Puteaux | 463 | 2016 | | 74 | [METSYS](https://www.tamtam.ai/c/metsys) (metsys.fr)
Advises clients on cybersecurity, infrastructure, and cloud solution design and implementation. Over 500 employees across France, 93.2M in revenue. | IT Services and IT Consulting | πŸ‡«πŸ‡· Boulogne-Billancourt | 435 | 2011 | | 75 | [Stormshield](https://www.tamtam.ai/c/stormshield) (stormshield.com)
Provides certified cybersecurity solutions for critical infrastructure, sensitive data, and operational environments to ensure cyber-serenity for clients globally. | Computer and Network Security | πŸ‡«πŸ‡· Issy-les-Moulineaux | 433 | 2014 | | 76 | [Almond](https://www.tamtam.ai/c/almond) (almond.eu)
Formed from NetXP and Provadys, positioned as a major independent French player in audit and consulting for Cybersecurity, Cloud, and Infrastructure. | IT Services and IT Consulting | πŸ‡«πŸ‡· SΓ¨vres | 424 | 2006 | | 77 | [Oodrive](https://www.tamtam.ai/c/oodrive) (oodrive.com)
Provides transparent tools for businesses to collaborate, communicate, and streamline operations, ensuring security, sovereignty, and compliance for users. | Software Development | πŸ‡«πŸ‡· Paris | 385 | 2000 | | 78 | [Sewan Groupe](https://www.tamtam.ai/c/sewan-groupe) (sewan.fr)
Cloud operator and host providing essential communication services to businesses, with a national network of over 1000 partners serving 75,000 companies and 2000 mid-sized enterprises | Telecommunications | πŸ‡«πŸ‡· Paris | 384 | 2007 | | 79 | [Saphir Group](https://www.tamtam.ai/c/saphir-group) (quariq.com)
Provides Industry 4.0 solutions, industrial automation, MES/MOM, PLM, data and AI, OT security for manufacturers, from strategy to execution globally. | IT Services and IT Consulting | πŸ‡«πŸ‡· Montigny-le-Bretonneux | 380 | 2024 | | 80 | [Devoteam \| Cyber Trust](https://www.tamtam.ai/c/devoteam-cyber-trust) (devoteam.com)
Empowering clients to protect digital transformation by managing risks and deploying innovative cybersecurity solutions, ensuring resilience in the digital age | IT Services and IT Consulting | πŸ‡«πŸ‡· Levallois-Perret | 374 | 1995 | | 81 | [ADENTIS](https://www.tamtam.ai/c/adentis) (adentis.fr)
High-tech consulting company developing software and embedded systems for digital TV, telecom, medical electronics, defense, and aeronautics. Research lab. | IT Services and IT Consulting | πŸ‡«πŸ‡· Boulogne-Billancourt | 362 | 2000 | | 82 | [SYNETIS](https://www.tamtam.ai/c/synetis) (synetis.com)
Leading French cybersecurity consulting firm, assisting companies with information systems security, offering audits, GRC, digital identity, operational security, and training. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 351 | 2010 | | 83 | [iQanto](https://www.tamtam.ai/c/iqanto) (iqanto.net)
Industrial transformation through automation, robotics, AI, and cybersecurity to improve processes and deploy intelligent systems across diverse sectors for small and large enterprises. | IT Services and IT Consulting | πŸ‡«πŸ‡· Marseille | 349 | | | 84 | [Avanquest](https://www.tamtam.ai/c/avanquest) (avanquestgroup.com)
A leading software publisher offering PDF, Security, and Photo products, utilizing cutting edge technology to enhance user experience worldwide | Software Development | πŸ‡«πŸ‡· Courbevoie | 340 | 1984 | | 85 | [Foliateam](https://www.tamtam.ai/c/foliateam) (foliateam.com)
FOLIATEAM offers secure cloud telephony, IT, and cybersecurity solutions for businesses and public organizations, providing reliable networks, cloud services, and tailored support | IT Services and IT Consulting | πŸ‡«πŸ‡· Saint-Maur-des-FossΓ©s | 335 | 2002 | | 86 | [IMPRIMERIE NATIONALE S.A.](https://www.tamtam.ai/c/imprimerie-nationale-s-a) (ingroupe.com)
Provides secure identity solutions including electronic components, biometrics integration, polycarbonate cards, digital services, and complex printing for governments and businesses worldwide. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 328 | 1538 | | 87 | [Ciril GROUP](https://www.tamtam.ai/c/ciril-group) (cirilgroup.com)
A French software and Cloud industry player offering reliable solutions for public sector financial, HR, and technical management, geospatial applications, innovative GMAO and BIM technologies, and secure cloud services | Software Development | πŸ‡«πŸ‡· Villeurbanne | 322 | 1978 | | 88 | [SEA TPI](https://www.tamtam.ai/c/sea-tpi) (seatpi.com)
ESN specializing in IT operations, offering services in supervision, system administration, cybersecurity, and support Constantly hiring various IT professionals nationwide Visit website for job opportunities | IT Services and IT Consulting | πŸ‡«πŸ‡· La Ciotat | 321 | 1996 | | 89 | [Nomios France](https://www.tamtam.ai/c/nomios-france) (nomios.fr)
Integrator specializing in cybersecurity since 2004, offering tailored support, integration, and operational maintenance of cybersecurity solutions for businesses across France and Europe. | Computer and Network Security | πŸ‡«πŸ‡· | 314 | 2004 | | 90 | [AntemetA](https://www.tamtam.ai/c/antemeta) (antemeta.fr)
French SME, expertise in IT infrastructure, cloud computing, and cybersecurity since 1995. They help companies transform their information systems. | IT Services and IT Consulting | πŸ‡«πŸ‡· Guyancourt | 310 | 1995 | | 91 | [Cloud Temple](https://www.tamtam.ai/c/cloud-temple) (cloud-temple.com)
Provides IT transformation, hosting, and outsourcing for critical business applications. Guides customers from conception to maintenance across various IT verticals, specializing in private cloud. | IT Services and IT Consulting | πŸ‡«πŸ‡· Puteaux | 310 | 2017 | | 92 | [EvaBssi](https://www.tamtam.ai/c/evabssi) (evabssi.com)
International consulting firm specializing in cybersecurity and information system performance, helping clients manage cyber risks and build innovative, efficient IS. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 310 | 2007 | | 93 | [Airbus Defence and Space Cyber](https://www.tamtam.ai/c/airbus-defence-and-space-cyber) (cyber.airbus.com)
Designing, developing, integrating, and deploying reliable cyber security solutions for defense, governmental, and institutional customers, leveraging 30 years of expertise. | IT Services and IT Consulting | πŸ‡«πŸ‡· Γ‰lancourt | 308 | | | 94 | [NEXTEDIA](https://www.tamtam.ai/c/nextedia) (nextedia.com)
The Nextedia Group specializes in Cybersecurity, Cloud, Digital Workspace, and Customer Experience, providing expertise and solutions to large companies across various sectors | IT Services and IT Consulting | πŸ‡«πŸ‡· Puteaux | 305 | | | 95 | [APIXIT](https://www.tamtam.ai/c/apixit) (apixit.fr)
Provides cybersecurity, infrastructure, and cloud solutions, supporting clients through audits, consulting, integration, maintenance, and managed services for digital transformation. | IT Services and IT Consulting | πŸ‡«πŸ‡· Les Ulis | 303 | 1992 | | 96 | [Cyllene](https://www.tamtam.ai/c/cyllene) (groupe-cyllene.com)
Provides digital transformation through consulting, architecture, hosting, cybersecurity, application deployment, and data intelligence, emphasizing human expertise in technology solutions. | IT Services and IT Consulting | πŸ‡«πŸ‡· Paris | 295 | 1986 | | 97 | [act digital EMEA - Alter Solutions](https://www.tamtam.ai/c/act-digital-emea-alter-solutions) (actdigital.com)
AI-first multinational technology company providing customized, scalable solutions with local agility and global expertise to create business value. | IT Services and IT Consulting | πŸ‡«πŸ‡· Versailles | 284 | 2006 | | 98 | [SCT](https://www.tamtam.ai/c/sct) (sct-solutions.fr)
Providing high-speed internet, professional telephony, comprehensive cybersecurity, cloud backup, and GDPR compliance support for small and medium enterprises. | Telecommunications | πŸ‡«πŸ‡· Valbonne | 279 | 1997 | | 99 | [WALLIX Group](https://www.tamtam.ai/c/wallix-group) (wallix.com)
A European cybersecurity specialist providing digital identity and access security solutions to enable business continuity, regulatory compliance, and ethical digital transformation | Software Development | πŸ‡«πŸ‡· Paris | 277 | 2003 | | 100 | [Axess](https://www.tamtam.ai/c/axess-durham) (axess.fr)
Provides digital transformation solutions, offering software, cloud computing, infrastructure management, and value-added services and consulting for businesses and administrations. | IT Services and IT Consulting | πŸ‡«πŸ‡· Durham | 274 | 2003 | ## 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 12, 2026. ## More company lists in France - [The largest companies in France](https://www.tamtam.ai/l/largest-companies-france) (90,812) - [Multinational companies in France](https://www.tamtam.ai/l/multinational-companies-france) (11,864) - [Companies with in-house R&D in France](https://www.tamtam.ai/l/r-and-d-companies-france) (8,749) - [Retail chains in France](https://www.tamtam.ai/l/retail-chains-france) (7,525) - [Manufacturers in France](https://www.tamtam.ai/l/manufacturers-france) (6,697) - [Professional services firms in France](https://www.tamtam.ai/l/professional-services-firms-france) (6,610) - [IT services companies in France](https://www.tamtam.ai/l/it-services-companies-france) (5,000) - [IT Services and IT Consulting companies in France](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-france) (4,943) - [Hardware manufacturers in France](https://www.tamtam.ai/l/hardware-companies-france) (4,256) - [Consulting firms in France](https://www.tamtam.ai/l/consulting-firms-france) (4,251) - [Software Development companies in France](https://www.tamtam.ai/l/software-development-companies-france) (4,209) - [Public sector organisations in France](https://www.tamtam.ai/l/public-sector-organisations-france) (4,006) - [Family-owned companies in France](https://www.tamtam.ai/l/family-owned-companies-france) (3,859) - [Distributors and wholesalers in France](https://www.tamtam.ai/l/distributors-and-wholesalers-france) (3,598) - [Business Consulting and Services companies in France](https://www.tamtam.ai/l/business-consulting-and-services-companies-france) (3,392) - [Financial services firms in France](https://www.tamtam.ai/l/financial-services-firms-france) (3,095) - [Critical infrastructure operators in France](https://www.tamtam.ai/l/critical-infrastructure-operators-france) (2,721) - [Real Estate companies in France](https://www.tamtam.ai/l/real-estate-companies-france) (2,514) - [Law Practice companies in France](https://www.tamtam.ai/l/law-practice-companies-france) (2,454) - [Subscription businesses in France](https://www.tamtam.ai/l/subscription-businesses-france) (2,405) - [Advertising Services companies in France](https://www.tamtam.ai/l/advertising-services-companies-france) (2,360) - [Companies with a mobile app in France](https://www.tamtam.ai/l/companies-with-mobile-app-france) (2,270) - [Retail companies in France](https://www.tamtam.ai/l/retail-companies-france) (2,254) - [Contract manufacturers in France](https://www.tamtam.ai/l/contract-manufacturers-france) (2,250) ## The same list elsewhere in France - [Cybersecurity companies in Île-de-France](https://www.tamtam.ai/l/cybersecurity-companies-ile-de-france) (525) - [Cybersecurity companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/cybersecurity-companies-hauts-de-seine) (154) - [Cybersecurity companies in Auvergne-RhΓ΄ne-Alpes](https://www.tamtam.ai/l/cybersecurity-companies-auvergne-rhone-alpes) (91) - [Cybersecurity companies in Occitanie](https://www.tamtam.ai/l/cybersecurity-companies-occitanie) (49) - [Cybersecurity companies in Provence-Alpes-CΓ΄te d'Azur](https://www.tamtam.ai/l/cybersecurity-companies-provence-alpes-cote-dazur) (48) - [Cybersecurity companies in the RhΓ΄ne department](https://www.tamtam.ai/l/cybersecurity-companies-rhone) (48) - [Cybersecurity companies in Hauts-de-France](https://www.tamtam.ai/l/cybersecurity-companies-hauts-de-france) (44) - [Cybersecurity companies in Grand Est](https://www.tamtam.ai/l/cybersecurity-companies-grand-est) (40) - [Cybersecurity companies in Brittany](https://www.tamtam.ai/l/cybersecurity-companies-brittany) (37) - [Cybersecurity companies in the Bouches-du-RhΓ΄ne department](https://www.tamtam.ai/l/cybersecurity-companies-bouches-du-rhone) (36) - [Cybersecurity companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/cybersecurity-companies-nouvelle-aquitaine) (35) - [Cybersecurity companies in the Nord department](https://www.tamtam.ai/l/cybersecurity-companies-nord) (30) - [Cybersecurity companies in Pays de la Loire](https://www.tamtam.ai/l/cybersecurity-companies-pays-de-la-loire) (28) - [Cybersecurity companies in the Haute-Garonne department](https://www.tamtam.ai/l/cybersecurity-companies-haute-garonne) (27) - [Cybersecurity companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/cybersecurity-companies-ille-et-vilaine) (25) - [Cybersecurity companies in the Yvelines department](https://www.tamtam.ai/l/cybersecurity-companies-yvelines) (25) - [Cybersecurity companies in Paris](https://www.tamtam.ai/l/cybersecurity-companies-paris) (290) ## The same list elsewhere - [Cybersecurity companies in the world](https://www.tamtam.ai/l/cybersecurity-companies-in-the-world) (3,776) - [Cybersecurity companies in Europe](https://www.tamtam.ai/l/cybersecurity-companies-in-europe) (2,197) --- Source: https://www.tamtam.ai/l/cybersecurity-companies-france