These large and mid-sized software development companies in Hauts-de-Seine specialize in diverse applications, from customer experience to urban mobility. Quadient, founded in 1924, focuses on intelligent communication and parcel locker solutions, while Doctolib (2013) provides healthcare technology. Linedata (1998) offers solutions for asset management, and Flowbird Group (2018) develops urban mobility technology. Vusion (1992) specializes in AI-powered digitalization for physical commerce.
The companies show a concentration in the northern part of Hauts-de-Seine, with a notable cluster in Boulogne-Billancourt, Neuilly-sur-Seine, and Nanterre. Their founding dates span from the early 20th century to the 2010s, indicating a mix of established enterprises and younger firms.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Quadientquadient.com
This company helps simplify customer connections through Intelligent Communication Automation, Parcel Locker Solutions, and Mail-Related Solutions, striving for customer experience excellence |
3,963 | |||
| 2 |
Doctolibdoctolib.com
A healthcare technology company striving to create a healthier world by providing innovative solutions for care teams and individuals, emphasizing privacy and accessibility |
3,598 | |||
| 3 |
Linedatalinedata.com
Provides humanized technology solutions and services for asset management and credit industries, helping clients evolve and operate at high levels. |
2,228 | |||
| 4 | 1,358 | ||||
| 5 |
Vusionvusion.com
Develops AI-powered digitalization solutions for physical commerce, transforming stores into intelligent environments, improving operations, enabling e-commerce, and activating in-store retail media. |
1,113 | |||
| 6 |
Viverisviveris.fr
consulting and engineering company for information systems, technical computing, and embedded systems, providing support from definition to integration. |
899 | |||
| 7 |
Planiswareplanisware.com
Provides AI-powered SaaS platforms for organizations to strategize, plan, and deliver projects, portfolios, programs, and products efficiently. |
791 | |||
| 8 | 636 | ||||
| 9 |
Flowbird Groupflowbird.com
Provides frictionless technology solutions for urban mobility, parking, and transport across 4,350 cities in 80 countries, making travel easier, safer, and faster. |
628 | |||
| 10 |
A2MAC1 - Decode the futurea2mac1.com
Provides comprehensive data analysis, technical insights, and competitive analysis to automotive and mobility businesses for informed decisions, innovation, and sustainable growth. |
623 | |||
| 11 |
SES-imagotagses-imagotag.com
Provides smart digital labels and an IoT platform to retailers, connecting physical stores, automating processes, improving efficiency, and serving customers. |
560 | |||
| 12 |
Nexpublicanexpublica.com
Develops innovative, secure software solutions for public, parapublic, and private sectors, supporting over 4,000 public and 1,200 private organizations. |
559 | |||
| 13 |
ChapsVisionchapsvision.com
French software company specializing in data intelligence and AI, providing industry-specific solutions for diverse sectors, supporting digital transformation globally. |
558 | |||
| 14 |
Trace Onetraceone.com
Partners with brands across industries to accelerate product development and turn regulatory complexity into a competitive advantage using an AI-powered PLM platform. |
526 | |||
| 15 |
Talentia Softwaretalentia-software.com
Offers HR and Finance software solutions specifically designed for mid-size companies, helping CFOs and CHROs navigate complexity and achieve business objectives. |
466 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Cegedim Santécegedim-sante.com
Covers health brands. Professionals, patients support. Software, hosting. 1100 employees. HDS, ISO 27001 certified. Regional agencies. 100,000+ health professionals. |
451 | |||
| 17 | 447 | ||||
| 18 |
Sidetradesidetrade.com
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. |
405 | |||
| 19 |
Amex GBT Neoamexglobalbusinesstravel.com
Offers integrated travel and expense management solutions, helping companies save on spend, improve productivity, and gain better visibility on total trip costs. |
344 | |||
| 20 |
Avanquestavanquestgroup.com
A leading software publisher offering PDF, Security, and Photo products, utilizing cutting edge technology to enhance user experience worldwide |
340 | |||
| 21 |
Ringover Franceringover.fr
It provides SaaS solutions for managing client interactions, integrating AI technology, and enhancing productivity for businesses worldwide. |
289 | |||
| 22 | 275 | ||||
| 23 |
ESRI Franceesrifrance.fr
The company designs and develops the most comprehensive and widely used GIS range in the world, essential tools for businesses and organizations |
268 | |||
| 24 |
SoftAtHomesoftathome.com
An independent software provider offering solutions in broadband, Wi-Fi, security, smart home, video, analytics, and QoE monitoring for operators worldwide |
264 | |||
| 25 |
Clouditycloudity.com
International digital company specializing in Salesforce consulting, digital transformation, sales increase, customer service improvement, and process automation solutions. |
256 | |||
| 26 |
Sunsticesunstice.com
Leading software vendor providing advanced Supply Chain Planning and Trade Promotion Management solutions to help companies optimize their supply chains and drive growth |
230 | |||
| 27 |
ITESOFTitesoft.com
A software vendor offering solutions for automating document-centric processes, including financial process automation and intelligent document capture for businesses and organizations |
221 | |||
| 28 | 216 | ||||
| 29 |
Smart Rxsmart-rx.com
Provides innovative software solutions to pharmacists for patient care, management, and animation of their pharmacies, supporting connected pharmacies for over 30 years. |
214 | |||
| 30 |
Tinubutinubu.com
Provides enterprise software for specialty insurance, managing complex risks from submission to renewal, serving carriers and underwriting teams globally. |
212 | |||
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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.
More company lists in the Hauts-de-Seine department
- The largest companies in the Hauts-de-Seine department 5,160
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- Manufacturers in the Hauts-de-Seine department 285
- Advertising Services companies in the Hauts-de-Seine department 281
- Marketing and communications agencies in the Hauts-de-Seine department 235
- Subscription businesses in the Hauts-de-Seine department 228
- Hardware manufacturers in the Hauts-de-Seine department 199
- Financial services firms in the Hauts-de-Seine department 198
- Companies with a mobile app in the Hauts-de-Seine department 189
- Critical infrastructure operators in the Hauts-de-Seine department 169
- AI companies in the Hauts-de-Seine department 159
- Education providers in the Hauts-de-Seine department 159
- Cybersecurity companies in the Hauts-de-Seine department 154
- Distributors and wholesalers in the Hauts-de-Seine department 154
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- Energy companies in the Hauts-de-Seine department 144
The same list elsewhere in France
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