# The 30 largest SaaS companies in the Hauts-de-Seine department

Tamtam tracks 389 SaaS companies headquartered in the Hauts-de-Seine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Pluxee, Cegedim and Quadient. Their median headcount is 530. Half of them were founded in 2000 or later. The most common headquarters are Boulogne-Billancourt (10), Issy-les-Moulineaux (4) and Courbevoie (3).

These SaaS companies in Hauts-de-Seine primarily operate in software development, IT services, and information services, catering to diverse sectors such as healthcare, human resources, and business process optimization. The list includes a mix of established large groups and mid-sized firms.

Key companies include Pluxee, offering global digital products for employee benefits; Cegedim, providing technology for healthcare data management; Doctolib, a healthcare technology company; and Quadient, which simplifies customer connections. A notable pattern is the concentration of headquarters in Boulogne-Billancourt, suggesting a hub for these types of businesses within the department.

🇫🇷 Hauts-de-Seine · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Pluxee](https://www.tamtam.ai/c/pluxee) (pluxeegroup.com)<br>Leading global partner offering diverse digital products. These provide employees freedom of choice for daily expenses, culture, incentives, and gifts in 28 countries. | Consumer Services | 🇫🇷 Issy-les-Moulineaux | 5,644 |  |
| 2 | [Cegedim](https://www.tamtam.ai/c/cegedim) (cegedim.com)<br>Technology and services for digital data flow management in healthcare ecosystems and B2B, plus business software publishing for healthcare and insurance professionals. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 4,103 | 1969 |
| 3 | [Quadient](https://www.tamtam.ai/c/quadient) (quadient.com)<br>This company helps simplify customer connections through Intelligent Communication Automation, Parcel Locker Solutions, and Mail-Related Solutions, striving for customer experience excellence | Software Development | 🇫🇷 Bagneux | 3,963 | 1924 |
| 4 | [Doctolib](https://www.tamtam.ai/c/doctolib) (doctolib.com)<br>A healthcare technology company striving to create a healthier world by providing innovative solutions for care teams and individuals, emphasizing privacy and accessibility | Software Development | 🇫🇷 Levallois-Perret | 3,598 | 2013 |
| 5 | [Solocal](https://www.tamtam.ai/c/solocal-boulogne-billancourt) (solocal.com)<br>Providing digital solutions to businesses in France through Search Local and Digital Marketing services, focusing on local content, personalized marketing, and growth acceleration | Advertising Services | 🇫🇷 Boulogne-Billancourt | 2,935 |  |
| 6 | [Berger-Levrault](https://www.tamtam.ai/c/berger-levrault) (berger-levrault.com)<br>Provides software solutions for public sector, healthcare, education, and industry, focusing on HR, financial management, and maintenance management for global customers. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 2,064 | 1676 |
| 7 | [Sopra HR Software](https://www.tamtam.ai/c/sopra-hr-software) (soprahr.com)<br>Provides payroll, HR management, and digitalization solutions for medium to large organizations, leveraging digital and AI for HR transformation in local and international contexts. | Human Resources Services | 🇫🇷 Courbevoie | 1,880 | 2015 |
| 8 | [Free-Work](https://www.tamtam.ai/c/free-work) (free-work.com)<br>Platform supporting IT contractors and permanent employees with career development and professional journeys in the European tech industry. | Human Resources Services | 🇫🇷 Boulogne-Billancourt | 1,870 |  |
| 9 | [Planisware](https://www.tamtam.ai/c/planisware) (planisware.com)<br>Provides AI-powered SaaS platforms for organizations to strategize, plan, and deliver projects, portfolios, programs, and products efficiently. | Software Development | 🇫🇷 Châtillon | 791 | 1996 |
| 10 | [Lefebvre Dalloz](https://www.tamtam.ai/c/lefebvre-dalloz) (lefebvre-dalloz.fr)<br>A leading provider of legal and tax knowledge through publishing, training, and software services, catering to various professionals and businesses in France | Information Services | 🇫🇷 Courbevoie | 728 |  |
| 11 | [Odigo](https://www.tamtam.ai/c/odigo) (odigo.com)<br>Provides an omnichannel CCaaS platform, simplifying and automating customer experience. Offers AI, security, and sovereign cloud solutions to enhance customer service and operational efficiency. | Software Development | 🇫🇷 Boulogne-Billancourt | 636 | 1986 |
| 12 | [A2MAC1 - Decode the future](https://www.tamtam.ai/c/a2mac1-decode-the-future) (a2mac1.com)<br>Provides comprehensive data analysis, technical insights, and competitive analysis to automotive and mobility businesses for informed decisions, innovation, and sustainable growth. | Software Development | 🇫🇷 Boulogne-Billancourt | 623 | 1997 |
| 13 | [ChapsVision](https://www.tamtam.ai/c/chapsvision) (chapsvision.com)<br>French software company specializing in data intelligence and AI, providing industry-specific solutions for diverse sectors, supporting digital transformation globally. | Software Development | 🇫🇷 Suresnes | 558 | 2019 |
| 14 | [Cegedim Business Services](https://www.tamtam.ai/c/cegedim-business-services) (cegedim-business-services.com)<br>Develop digital solutions to optimize and automate invoicing, purchasing, payroll, and HR processes, enabling focus on strategic activities. | Business Consulting and Services | 🇫🇷 Boulogne-Billancourt | 537 | 2000 |
| 15 | [VIDAL](https://www.tamtam.ai/c/vidal) (vidalfrance.com)<br>A company specializing in health product information and prescription safety solutions, reaching medical professionals across France and internationally | IT Services and IT Consulting | 🇫🇷 Issy-les-Moulineaux | 530 | 1914 |
| 16 | [Trace One](https://www.tamtam.ai/c/trace-one) (traceone.com)<br>Partners with brands across industries to accelerate product development and turn regulatory complexity into a competitive advantage using an AI-powered PLM platform. | Software Development | 🇫🇷 Puteaux | 526 | 2001 |
| 17 | [Cegedim Business Services - Human Resources](https://www.tamtam.ai/c/cegedim-business-services-human-resources) (cegedim-business-services.com)<br>Specializes in outsourced payroll and HR services with a modular SaaS platform covering payroll, personnel management, time tracking, and HR analytics. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 499 | 1985 |
| 18 | [Talentia Software](https://www.tamtam.ai/c/talentia-software) (talentia-software.com)<br>Offers HR and Finance software solutions specifically designed for mid-size companies, helping CFOs and CHROs navigate complexity and achieve business objectives. | Software Development | 🇫🇷 Puteaux | 466 | 1988 |
| 19 | [Cegedim Santé](https://www.tamtam.ai/c/cegedim-sante) (cegedim-sante.com)<br>Covers health brands. Professionals, patients support. Software, hosting. 1100 employees. HDS, ISO 27001 certified. Regional agencies. 100,000+ health professionals. | Software Development | 🇫🇷 Boulogne-Billancourt | 451 | 2021 |
| 20 | [Dalet](https://www.tamtam.ai/c/dalet) (dalet.com)<br>Empowers media organizations to transform production, distribution workflows, accelerating media operations, maximizing collaboration, and creating higher value from content with software solutions. | Software Development | 🇫🇷 Levallois-Perret | 447 | 1990 |
| 21 | [Stormshield](https://www.tamtam.ai/c/stormshield) (stormshield.com)<br>Provides certified cybersecurity solutions for critical infrastructure, sensitive data, and operational environments to ensure cyber-serenity for clients globally. | Computer and Network Security | 🇫🇷 Issy-les-Moulineaux | 433 | 2014 |
| 22 | [Sidetrade](https://www.tamtam.ai/c/sidetrade) (sidetrade.com)<br>Provides agentic AI for finance teams, managing Order-to-Cash cycles including cash collection, application, dispute resolution, credit analysis, and risk using extensive B2B transaction data. | Software Development | 🇫🇷 Boulogne-Billancourt | 405 | 2000 |
| 23 | [XXII](https://www.tamtam.ai/c/xxii) (xxiiai.com)<br>Specializing in real-time video analysis and AI, the company develops software to detect and analyze various situations in infrastructure and cities to enhance human vision | IT Services and IT Consulting | 🇫🇷 Puteaux | 381 | 2015 |
| 24 | [OUTSCALE](https://www.tamtam.ai/c/outscale) (outscale.com)<br>Sovereign cloud operator providing virtual twin solutions for data control, cyber governance, and sustainable infrastructure optimization for organizations. | IT Services and IT Consulting | 🇫🇷 Saint-Cloud | 355 | 2010 |
| 25 | [Amex GBT Neo](https://www.tamtam.ai/c/amex-gbt-neo) (amexglobalbusinesstravel.com)<br>Offers integrated travel and expense management solutions, helping companies save on spend, improve productivity, and gain better visibility on total trip costs. | Software Development | 🇫🇷 Issy-les-Moulineaux | 344 |  |
| 26 | [Avanquest](https://www.tamtam.ai/c/avanquest) (avanquestgroup.com)<br>A leading software publisher offering PDF, Security, and Photo products, utilizing cutting edge technology to enhance user experience worldwide | Software Development | 🇫🇷 Courbevoie | 340 | 1984 |
| 27 | [ARISTID Retail Technology](https://www.tamtam.ai/c/aristid-retail-technology) (aristid.com)<br>French technology company, digital transformation leader for retail, providing a promotional data-centric platform for commercial operations, enabling localized and personalized content for shoppers. | IT Services and IT Consulting | 🇫🇷 Clichy | 315 |  |
| 28 | [Ringover France](https://www.tamtam.ai/c/ringover-france) (ringover.fr)<br>It provides SaaS solutions for managing client interactions, integrating AI technology, and enhancing productivity for businesses worldwide. | Software Development | 🇫🇷 Montrouge | 289 | 2018 |
| 29 | [Edenred Solutions CSE](https://www.tamtam.ai/c/edenred-solutions-cse) (solutionscse.edenred.fr)<br>Software solutions for CSEs to manage communication, administration, accounting, and distribute benefits, enhancing employee well-being and simplifying elected officials' tasks. | Technology, Information and Internet | 🇫🇷 Malakoff | 276 |  |
| 30 | [Weezevent](https://www.tamtam.ai/c/weezevent) (weezevent.com)<br>An innovative company providing ticketing and cashless solutions for event organisers and venues worldwide, with a strong presence in major markets | Events Services | 🇫🇷 Clichy | 247 |  |

## 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.

## More company lists in the Hauts-de-Seine department

- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [Multinational companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/multinational-companies-hauts-de-seine) (1,231)
- [IT services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-companies-hauts-de-seine) (737)
- [IT Services and IT Consulting companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-hauts-de-seine) (706)
- [Professional services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/professional-services-firms-hauts-de-seine) (629)
- [Consulting firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/consulting-firms-hauts-de-seine) (563)
- [Companies with in-house R&D in the Hauts-de-Seine department](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-seine) (510)
- [Business Consulting and Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/business-consulting-and-services-companies-hauts-de-seine) (304)
- [Software Development companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/software-development-companies-hauts-de-seine) (301)
- [Retail chains in the Hauts-de-Seine department](https://www.tamtam.ai/l/retail-chains-hauts-de-seine) (292)
- [Manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/manufacturers-hauts-de-seine) (285)
- [Advertising Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/advertising-services-companies-hauts-de-seine) (281)
- [Marketing and communications agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/marketing-agencies-hauts-de-seine) (235)
- [Subscription businesses in the Hauts-de-Seine department](https://www.tamtam.ai/l/subscription-businesses-hauts-de-seine) (228)
- [Hardware manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/hardware-companies-hauts-de-seine) (199)
- [Financial services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/financial-services-firms-hauts-de-seine) (198)
- [Companies with a mobile app in the Hauts-de-Seine department](https://www.tamtam.ai/l/companies-with-mobile-app-hauts-de-seine) (189)
- [Critical infrastructure operators in the Hauts-de-Seine department](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-seine) (169)
- [AI companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/ai-companies-hauts-de-seine) (159)
- [Education providers in the Hauts-de-Seine department](https://www.tamtam.ai/l/education-companies-hauts-de-seine) (159)
- [Cybersecurity companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/cybersecurity-companies-hauts-de-seine) (154)
- [Distributors and wholesalers in the Hauts-de-Seine department](https://www.tamtam.ai/l/distributors-and-wholesalers-hauts-de-seine) (154)
- [Recruitment and staffing agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/recruitment-agencies-hauts-de-seine) (152)
- [Energy companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/energy-companies-hauts-de-seine) (144)

## The same list elsewhere in France

- [SaaS companies in Île-de-France](https://www.tamtam.ai/l/saas-companies-ile-de-france) (2,859)
- [SaaS companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/saas-companies-auvergne-rhone-alpes) (476)
- [SaaS companies in Occitanie](https://www.tamtam.ai/l/saas-companies-occitanie) (317)
- [SaaS companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/saas-companies-provence-alpes-cote-dazur) (285)
- [SaaS companies in the Rhône department](https://www.tamtam.ai/l/saas-companies-rhone) (284)
- [SaaS companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/saas-companies-nouvelle-aquitaine) (236)
- [SaaS companies in Grand Est](https://www.tamtam.ai/l/saas-companies-grand-est) (216)
- [SaaS companies in Hauts-de-France](https://www.tamtam.ai/l/saas-companies-hauts-de-france) (194)
- [SaaS companies in Pays de la Loire](https://www.tamtam.ai/l/saas-companies-pays-de-la-loire) (180)
- [SaaS companies in the Nord department](https://www.tamtam.ai/l/saas-companies-nord) (163)
- [SaaS companies in the Haute-Garonne department](https://www.tamtam.ai/l/saas-companies-haute-garonne) (147)
- [SaaS companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/saas-companies-bouches-du-rhone) (146)
- [SaaS companies in the Gironde department](https://www.tamtam.ai/l/saas-companies-gironde) (141)
- [SaaS companies in the Loire-Atlantique department](https://www.tamtam.ai/l/saas-companies-loire-atlantique) (135)
- [SaaS companies in Brittany](https://www.tamtam.ai/l/saas-companies-brittany) (128)
- [SaaS companies in the Hérault department](https://www.tamtam.ai/l/saas-companies-herault) (110)
- [SaaS companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/saas-companies-ille-et-vilaine) (85)
- [SaaS companies in Paris](https://www.tamtam.ai/l/saas-companies-paris) (2,218)
- [SaaS companies in Lyon](https://www.tamtam.ai/l/saas-companies-lyon) (211)
- [SaaS companies in Lille](https://www.tamtam.ai/l/saas-companies-lille) (104)
- [SaaS companies in Toulouse](https://www.tamtam.ai/l/saas-companies-toulouse) (102)
- [SaaS companies in Nantes](https://www.tamtam.ai/l/saas-companies-nantes) (90)
- [SaaS companies in Bordeaux](https://www.tamtam.ai/l/saas-companies-bordeaux) (88)
- [SaaS companies in Boulogne-Billancourt](https://www.tamtam.ai/l/saas-companies-boulogne-billancourt) (79)

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Source: https://www.tamtam.ai/l/saas-companies-hauts-de-seine