# Software Development companies headquartered in the Hauts-de-Seine department
Tamtam tracks 301 Software Development companies headquartered in the Hauts-de-Seine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Quadient, Doctolib and Linedata. Their median headcount is 466. Half of them were founded in 1996 or later. The most common headquarters are Boulogne-Billancourt (7), Courbevoie (3) and Issy-les-Moulineaux (2).
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.
馃嚝馃嚪 Hauts-de-Seine 路 30 companies 路 Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Quadient](https://www.tamtam.ai/c/quadient) (quadient.com)
This company helps simplify customer connections through Intelligent Communication Automation, Parcel Locker Solutions, and Mail-Related Solutions, striving for customer experience excellence | Software Development | 馃嚝馃嚪 Bagneux | 3,963 | 1924 |
| 2 | [Doctolib](https://www.tamtam.ai/c/doctolib) (doctolib.com)
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 | 馃嚝馃嚪 Levallois-Perret | 3,598 | 2013 |
| 3 | [Linedata](https://www.tamtam.ai/c/linedata) (linedata.com)
Provides humanized technology solutions and services for asset management and credit industries, helping clients evolve and operate at high levels. | Software Development | 馃嚝馃嚪 Neuilly-sur-Seine | 2,228 | 1998 |
| 4 | [IGA](https://www.tamtam.ai/c/iga) (iga.fr)
Develops software components, creates custom solutions, implements installations, and provides specific services like hosting and accounting outsourcing for insurance, travel, and trade. | Software Development | 馃嚝馃嚪 Malakoff | 1,358 | 1985 |
| 5 | [Vusion](https://www.tamtam.ai/c/vusion) (vusion.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. | Software Development | 馃嚝馃嚪 Nanterre | 1,113 | 1992 |
| 6 | [Viveris](https://www.tamtam.ai/c/viveris) (viveris.fr)
consulting and engineering company for information systems, technical computing, and embedded systems, providing support from definition to integration. | Software Development | 馃嚝馃嚪 Boulogne-Billancourt | 899 | 1986 |
| 7 | [Planisware](https://www.tamtam.ai/c/planisware) (planisware.com)
Provides AI-powered SaaS platforms for organizations to strategize, plan, and deliver projects, portfolios, programs, and products efficiently. | Software Development | 馃嚝馃嚪 Ch芒tillon | 791 | 1996 |
| 8 | [Odigo](https://www.tamtam.ai/c/odigo) (odigo.com)
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 | 馃嚝馃嚪 Boulogne-Billancourt | 636 | 1986 |
| 9 | [Flowbird Group](https://www.tamtam.ai/c/flowbird-group) (flowbird.com)
Provides frictionless technology solutions for urban mobility, parking, and transport across 4,350 cities in 80 countries, making travel easier, safer, and faster. | Software Development | 馃嚝馃嚪 Neuilly-sur-Seine | 628 | 2018 |
| 10 | [A2MAC1 - Decode the future](https://www.tamtam.ai/c/a2mac1-decode-the-future) (a2mac1.com)
Provides comprehensive data analysis, technical insights, and competitive analysis to automotive and mobility businesses for informed decisions, innovation, and sustainable growth. | Software Development | 馃嚝馃嚪 Boulogne-Billancourt | 623 | 1997 |
| 11 | [SES-imagotag](https://www.tamtam.ai/c/ses-imagotag) (ses-imagotag.com)
Provides smart digital labels and an IoT platform to retailers, connecting physical stores, automating processes, improving efficiency, and serving customers. | Software Development | 馃嚝馃嚪 Nanterre | 560 | 1992 |
| 12 | [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 | 馃嚝馃嚪 Clichy | 559 | |
| 13 | [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 | 馃嚝馃嚪 Suresnes | 558 | 2019 |
| 14 | [Trace One](https://www.tamtam.ai/c/trace-one) (traceone.com)
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 | 馃嚝馃嚪 Puteaux | 526 | 2001 |
| 15 | [Talentia Software](https://www.tamtam.ai/c/talentia-software) (talentia-software.com)
Offers HR and Finance software solutions specifically designed for mid-size companies, helping CFOs and CHROs navigate complexity and achieve business objectives. | Software Development | 馃嚝馃嚪 Puteaux | 466 | 1988 |
| 16 | [Cegedim Sant茅](https://www.tamtam.ai/c/cegedim-sante) (cegedim-sante.com)
Covers health brands. Professionals, patients support. Software, hosting. 1100 employees. HDS, ISO 27001 certified. Regional agencies. 100,000+ health professionals. | Software Development | 馃嚝馃嚪 Boulogne-Billancourt | 451 | 2021 |
| 17 | [Dalet](https://www.tamtam.ai/c/dalet) (dalet.com)
Empowers media organizations to transform production, distribution workflows, accelerating media operations, maximizing collaboration, and creating higher value from content with software solutions. | Software Development | 馃嚝馃嚪 Levallois-Perret | 447 | 1990 |
| 18 | [Sidetrade](https://www.tamtam.ai/c/sidetrade) (sidetrade.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. | Software Development | 馃嚝馃嚪 Boulogne-Billancourt | 405 | 2000 |
| 19 | [Amex GBT Neo](https://www.tamtam.ai/c/amex-gbt-neo) (amexglobalbusinesstravel.com)
Offers integrated travel and expense management solutions, helping companies save on spend, improve productivity, and gain better visibility on total trip costs. | Software Development | 馃嚝馃嚪 Issy-les-Moulineaux | 344 | |
| 20 | [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 | 馃嚝馃嚪 Courbevoie | 340 | 1984 |
| 21 | [Ringover France](https://www.tamtam.ai/c/ringover-france) (ringover.fr)
It provides SaaS solutions for managing client interactions, integrating AI technology, and enhancing productivity for businesses worldwide. | Software Development | 馃嚝馃嚪 Montrouge | 289 | 2018 |
| 22 | [Webnet](https://www.tamtam.ai/c/webnet) (webnet.fr)
Established in 1996, the company is an internet solutions integrator offering services like consulting, development, hosting, multimedia creation, and mobility solutions for clients | Software Development | 馃嚝馃嚪 S猫vres | 275 | 1996 |
| 23 | [ESRI France](https://www.tamtam.ai/c/esri-france) (esrifrance.fr)
The company designs and develops the most comprehensive and widely used GIS range in the world, essential tools for businesses and organizations | Software Development | 馃嚝馃嚪 Meudon | 268 | 1988 |
| 24 | [SoftAtHome](https://www.tamtam.ai/c/softathome) (softathome.com)
An independent software provider offering solutions in broadband, Wi-Fi, security, smart home, video, analytics, and QoE monitoring for operators worldwide | Software Development | 馃嚝馃嚪 Colombes | 264 | 2008 |
| 25 | [Cloudity](https://www.tamtam.ai/c/cloudity) (cloudity.com)
International digital company specializing in Salesforce consulting, digital transformation, sales increase, customer service improvement, and process automation solutions. | Software Development | 馃嚝馃嚪 Courbevoie | 256 | 2014 |
| 26 | [Sunstice](https://www.tamtam.ai/c/sunstice) (sunstice.com)
Leading software vendor providing advanced Supply Chain Planning and Trade Promotion Management solutions to help companies optimize their supply chains and drive growth | Software Development | 馃嚝馃嚪 Boulogne-Billancourt | 230 | 1994 |
| 27 | [ITESOFT](https://www.tamtam.ai/c/itesoft) (itesoft.com)
A software vendor offering solutions for automating document-centric processes, including financial process automation and intelligent document capture for businesses and organizations | Software Development | 馃嚝馃嚪 Rueil-Malmaison | 221 | 1984 |
| 28 | [AYMAX鈩(https://www.tamtam.ai/c/aymax) (aymax.fr)
Expert in digital consulting, app development, and SAP integration Specializing in new technologies, providing tailored solutions to enhance flexibility and innovation for clients worldwide | Software Development | 馃嚝馃嚪 Courbevoie | 216 | 2014 |
| 29 | [Smart Rx](https://www.tamtam.ai/c/smart-rx) (smart-rx.com)
Provides innovative software solutions to pharmacists for patient care, management, and animation of their pharmacies, supporting connected pharmacies for over 30 years. | Software Development | 馃嚝馃嚪 Boulogne-Billancourt | 214 | 1969 |
| 30 | [Tinubu](https://www.tamtam.ai/c/tinubu) (tinubu.com)
Provides enterprise software for specialty insurance, managing complex risks from submission to renewal, serving carriers and underwriting teams globally. | Software Development | 馃嚝馃嚪 Issy-les-Moulineaux | 212 | 2000 |
## 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)
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- [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)
- [SaaS companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/saas-companies-hauts-de-seine) (389)
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- [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)
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## The same list elsewhere in France
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- [Software Development companies in Grand Est](https://www.tamtam.ai/l/software-development-companies-grand-est) (211)
- [Software Development companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/software-development-companies-nouvelle-aquitaine) (210)
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- [Software Development companies in Hauts-de-France](https://www.tamtam.ai/l/software-development-companies-hauts-de-france) (177)
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- [Software Development companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/software-development-companies-ille-et-vilaine) (80)
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- [Software Development companies in Lyon](https://www.tamtam.ai/l/software-development-companies-lyon) (178)
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- [Software Development companies in Lille](https://www.tamtam.ai/l/software-development-companies-lille) (77)
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Source: https://www.tamtam.ai/l/software-development-companies-hauts-de-seine