# Top 30 SaaS companies in the Loire-Atlantique department

Tamtam tracks 135 SaaS companies headquartered in the Loire-Atlantique department. This list ranks the 30 largest by number of employees on LinkedIn, led by RCA, Shops and Akeneo. Their median headcount is 98. Half of them were founded in 2009 or later. The most common headquarters are Nantes (17) and Saint-Herblain (7).

The SaaS companies in Loire-Atlantique are mostly mid-sized firms, with a strong presence in software development. RCA develops software for accounting professionals, Shops simplifies online presence for merchants, Akeneo offers product experience management solutions, and ARPÈGE SAS provides digital solutions for local governments. Other notable companies include Proginov, a publisher of cloud-hosted management software, and Obat, which specializes in invoicing software for the construction sector.

A clear pattern in this data is the concentration of headquarters in Nantes and Saint-Herblain. These two cities host the majority of the larger SaaS companies in the department, indicating a regional hub for software and technology development. The companies also show a mix of founding eras, from established firms founded in the 1970s and 1980s to more recent ventures from the 2010s.

🇫🇷 Loire-Atlantique · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [RCA](https://www.tamtam.ai/c/rca) (rca.fr)<br>Develops innovative software solutions for accounting professionals and their clients, streamlining management, advisory services, and digital transition for accounting firms. | Software Development | 🇫🇷 Saint-Herblain | 1,626 | 1999 |
| 2 | [Shops](https://www.tamtam.ai/c/shops-nantes) (go-shops.fr)<br>Shops simplifies online presence for merchants, connecting customers with local stores based on product search, promotions, and community recommendations | Technology, Information and Internet | 🇫🇷 Nantes | 810 | 2018 |
| 3 | [Akeneo](https://www.tamtam.ai/c/akeneo) (akeneo.com)<br>Empowering business leaders with software, education, and community for product experience management. Offering intelligent Product Cloud for data enrichment, management, and syndication. | Software Development | 🇫🇷 Nantes | 427 | 2013 |
| 4 | [ARPÈGE SAS](https://www.tamtam.ai/c/arpege-sas) (arpege.fr)<br>Provides innovative digital solutions for local governments, focusing on population management, decision systems, and e-service platforms to enhance citizen experience. | Software Development | 🇫🇷 Saint-Sébastien-sur-Loire | 331 | 1989 |
| 5 | [Proginov](https://www.tamtam.ai/c/proginov) (proginov.com)<br>French publisher of cloud-hosted management software and ERP solutions specializing in industrial, distribution, and healthcare sectors with dedicated secure data hosting services. | Software Development | 🇫🇷 La Chevrolière | 283 | 1996 |
| 6 | [Obat](https://www.tamtam.ai/c/obat) (obat.fr)<br>Specialized invoicing software designed for contractors and self-employed individuals within the construction sector Streamlining financial processes and improving efficiency | Software Development | 🇫🇷 Nantes | 274 | 2019 |
| 7 | [DYNABUY](https://www.tamtam.ai/c/dynabuy) (dynabuy.fr)<br>A world of benefits to save money, boost sales, motivate employees, and retain customers Free networking guide available for download | Business Consulting and Services | 🇫🇷 Saint-Herblain | 244 | 2009 |
| 8 | [iAdvize](https://www.tamtam.ai/c/iadvize) (iadvize.com)<br>Building AI shopping assistants, transforming digital conversations into over $1 billion in annual online revenue for e-commerce brands. | Technology, Information and Internet | 🇫🇷 Nantes | 184 | 2010 |
| 9 | [Lengow](https://www.tamtam.ai/c/lengow) (lengow.com)<br>E-commerce automation solution enabling brands to improve performance, automate processes, and expand internationally by integrating with 200+ marketplaces and 1,400+ channels | Software Development | 🇫🇷 Nantes | 177 | 2009 |
| 10 | [Services Epargne Entreprise](https://www.tamtam.ai/c/services-epargne-entreprise) (s2e-services-epargne-entreprise.com)<br>Management platform for employee savings accounts, serving over 80,000 companies and 2.6 million employees with secure, certified services. | Financial Services | 🇫🇷 Nantes | 148 | 2006 |
| 11 | [MONEWEB - JES](https://www.tamtam.ai/c/moneweb-jes) (jes.fr)<br>A French leader in collective space management solutions, providing a comprehensive approach for catering, payment, and other services with a focus on improving consumer experience | Software Development | 🇫🇷 Saint-Herblain | 126 | 1975 |
| 12 | [proLogistik France (DSIA)](https://www.tamtam.ai/c/prologistik-france-dsia) (logistar-dsia.com)<br>French subsidiary of a pan-European group, publishing, integrating, and hosting supply chain solutions, including WMS, OMS, LMS, TMS, ensuring optimal security and accessibility. | Software Development | 🇫🇷 Nantes | 114 | 1985 |
| 13 | [Smartway](https://www.tamtam.ai/c/smartway) (smartway.ai)<br>Development of AI-based system helping stores identify soon-to-expire food products, enabling discounts or donations to reduce waste and increase profits. | Retail Groceries | 🇫🇷 Saint-Herblain | 104 | 2012 |
| 14 | [ISILOG](https://www.tamtam.ai/c/isilog) (isilog.fr)<br>A comprehensive service management solution with modules for asset, service, project management, and continuous improvement, aligning with ITIL and ISO 20000 standards | Software Development | 🇫🇷 Saint-Herblain | 103 | 1992 |
| 15 | [Wiztivi](https://www.tamtam.ai/c/wiztivi) (wiztivi.com)<br>Empowering telecom, media, and content providers to deliver next-generation entertainment experiences through cutting-edge video applications and a world-class cloud gaming solution. | Software Development | 🇫🇷 Carquefou | 98 | 2007 |
| 16 | [MyScript](https://www.tamtam.ai/c/myscript) (myscript.com)<br>Leader in real-time handwriting recognition using AI, offering interactive ink technology for digital content creation across various industries Innovating natural human-machine interfaces | Software Development | 🇫🇷 Nantes | 93 | 1998 |
| 17 | [Operis](https://www.tamtam.ai/c/operis) (web.operis.fr)<br>Operis specializes in digital solutions for French local authorities in urban planning, land management, heritage, and education, aiming to improve services for citizens and stakeholders | Software Development | 🇫🇷 Orvault | 89 | 2009 |
| 18 | [PerformanSe](https://www.tamtam.ai/c/performanse) (performanse.com)<br>A leader in behavioral and cognitive skills assessments, providing innovative solutions for HR professionals in recruitment, talent management, and vocational guidance | Software Development | 🇫🇷 Nantes | 86 | 1988 |
| 19 | [Clever Cloud](https://www.tamtam.ai/c/clever-cloud) (clever-cloud.com)<br>The company helps people and companies deliver software faster and ensure its sustainability by providing great hosting and deployment experiences | IT Services and IT Consulting | 🇫🇷 Nantes | 85 | 2010 |
| 20 | [iRaiser](https://www.tamtam.ai/c/iraiser) (iraiser.com)<br>providing innovative, ethical, and secure fundraising software tailored to nonprofit donor journeys, supporting over 900 organizations across Europe | Technology, Information and Internet | 🇫🇷 Saint-Sébastien-sur-Loire | 74 | 2012 |
| 21 | [Voxaly](https://www.tamtam.ai/c/voxaly) (voxaly.com)<br>Specialized in electronic voting systems, organizing elections for labor unions, supervisory boards, shareholder meetings for top French companies Customized solutions since 2006 | IT Services and IT Consulting | 🇫🇷 Saint-Herblain | 73 | 2006 |
| 22 | [KoralPlay](https://www.tamtam.ai/c/koralplay) (koralplay.com)<br>An experienced gaming technology partner providing omnichannel solutions, customized games, and comprehensive support for sports betting, gaming, and lottery operators globally | Software Development | 🇫🇷 Nantes | 72 | 2017 |
| 23 | [SITACI](https://www.tamtam.ai/c/sitaci) (sitaci.fr)<br>Supply Chain Solution specialist with over 30 years of expertise in logistics, offering innovative WMS EGO software implemented in 520+ sites globally | Software Development | 🇫🇷 Haute Goulaine | 66 | 1987 |
| 24 | [Costructor](https://www.tamtam.ai/c/costructor) (costructor.co)<br>Costructor is the first all-in-one software for managing construction businesses on mobile or PC, offering comprehensive solutions for the industry | Software Development | 🇫🇷 Nantes | 64 | 2022 |
| 25 | [MicroEJ](https://www.tamtam.ai/c/microej) (microej.com)<br>Provides software solutions for embedded and IoT devices, transforming electronic products into software-defined, scalable, and flexible smart devices. | Software Development | 🇫🇷 Nantes | 58 | 2012 |
| 26 | [Inlead by Adplorer](https://www.tamtam.ai/c/inlead-by-adplorer) (inlead.fr)<br>InLead is a digital marketing platform for national networks, offering modules for geolocated campaigns, online reputation management, and personalized marketing strategies | Software Development | 🇫🇷 Nantes | 55 | 2016 |
| 27 | [Virage Group](https://www.tamtam.ai/c/virage-group) (viragegroup.com)<br>Provides management solutions to centralize strategic plans, evaluate progress, and manage project portfolios, ensuring investments generate expected value and support decision-making. | Software Development | 🇫🇷 Nantes | 50 | 2001 |
| 28 | [Guest Suite](https://www.tamtam.ai/c/guest-suite) (guest-suite.com)<br>Guest Suite provides a comprehensive solution for managing local visibility through presence and review management, helping brands optimize online information, analyze reputation, and collect and respond to customer reviews | IT Services and IT Consulting | 🇫🇷 Nantes | 48 | 2013 |
| 29 | [CEDREO](https://www.tamtam.ai/c/cedreo) (cedreo.com)<br>3D home design software for builders, contractors, and designers Creates efficient design presentations, 2D/3D floor plans, and photorealistic renderings to streamline sales processes | Software Development | 🇫🇷 Saint-Herblain | 44 | 2005 |
| 30 | [Shiptify](https://www.tamtam.ai/c/shiptify) (shiptify.com)<br>A collaborative platform that simplifies and speeds up air/sea/road transportation management, enabling smarter decision-making and significant time and cost savings in logistics | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Nantes | 41 | 2016 |

## 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 the Loire-Atlantique department

- [The largest companies in the Loire-Atlantique department](https://www.tamtam.ai/l/largest-companies-loire-atlantique) (2,044)
- [Companies with in-house R&D in the Loire-Atlantique department](https://www.tamtam.ai/l/r-and-d-companies-loire-atlantique) (207)
- [Retail chains in the Loire-Atlantique department](https://www.tamtam.ai/l/retail-chains-loire-atlantique) (162)
- [Multinational companies in the Loire-Atlantique department](https://www.tamtam.ai/l/multinational-companies-loire-atlantique) (159)
- [Professional services firms in the Loire-Atlantique department](https://www.tamtam.ai/l/professional-services-firms-loire-atlantique) (158)
- [Software Development companies in the Loire-Atlantique department](https://www.tamtam.ai/l/software-development-companies-loire-atlantique) (137)
- [IT services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/it-services-companies-loire-atlantique) (130)
- [Manufacturers in the Loire-Atlantique department](https://www.tamtam.ai/l/manufacturers-loire-atlantique) (125)
- [IT Services and IT Consulting companies in the Loire-Atlantique department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-loire-atlantique) (110)
- [Consulting firms in the Loire-Atlantique department](https://www.tamtam.ai/l/consulting-firms-loire-atlantique) (94)
- [Distributors and wholesalers in the Loire-Atlantique department](https://www.tamtam.ai/l/distributors-and-wholesalers-loire-atlantique) (94)
- [Hardware manufacturers in the Loire-Atlantique department](https://www.tamtam.ai/l/hardware-companies-loire-atlantique) (86)
- [Business Consulting and Services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/business-consulting-and-services-companies-loire-atlantique) (83)
- [Public sector organisations in the Loire-Atlantique department](https://www.tamtam.ai/l/public-sector-organisations-loire-atlantique) (80)
- [Family-owned companies in the Loire-Atlantique department](https://www.tamtam.ai/l/family-owned-companies-loire-atlantique) (71)
- [Education providers in the Loire-Atlantique department](https://www.tamtam.ai/l/education-companies-loire-atlantique) (68)
- [Real Estate companies in the Loire-Atlantique department](https://www.tamtam.ai/l/real-estate-companies-loire-atlantique) (67)
- [Financial services firms in the Loire-Atlantique department](https://www.tamtam.ai/l/financial-services-firms-loire-atlantique) (65)
- [Law Practice companies in the Loire-Atlantique department](https://www.tamtam.ai/l/law-practice-companies-loire-atlantique) (62)
- [Retail companies in the Loire-Atlantique department](https://www.tamtam.ai/l/retail-companies-loire-atlantique) (61)
- [Subscription businesses in the Loire-Atlantique department](https://www.tamtam.ai/l/subscription-businesses-loire-atlantique) (61)
- [Critical infrastructure operators in the Loire-Atlantique department](https://www.tamtam.ai/l/critical-infrastructure-operators-loire-atlantique) (58)
- [Events Services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/events-services-companies-loire-atlantique) (58)
- [Construction companies in the Loire-Atlantique department](https://www.tamtam.ai/l/construction-companies-loire-atlantique) (57)

## 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 the Hauts-de-Seine department](https://www.tamtam.ai/l/saas-companies-hauts-de-seine) (389)
- [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) (284)
- [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) (145)
- [SaaS companies in the Gironde department](https://www.tamtam.ai/l/saas-companies-gironde) (141)
- [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)

## The same list elsewhere

- [SaaS companies in the world](https://www.tamtam.ai/l/saas-companies-in-the-world) (22,459)
- [SaaS companies in Europe](https://www.tamtam.ai/l/saas-companies-in-europe) (13,682)

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Source: https://www.tamtam.ai/l/saas-companies-loire-atlantique