# The 30 largest Software Development companies in the Ille-et-Vilaine department

Tamtam tracks 80 Software Development companies headquartered in the Ille-et-Vilaine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Broadpeak, Sinari and BlueKanGo. Their median headcount is 51. Half of them were founded in 2011 or later. The most common headquarters are Rennes (15), Cesson-Sévigné (5) and Saint-Grégoire (2).

The software development companies in Ille-et-Vilaine range from mid-sized firms to young companies. They offer a variety of digital solutions across different sectors. Broadpeak specializes in video delivery components, while Sinari provides integrated software for transport and logistics. BlueKanGo offers customizable QHSE software, and Siradel focuses on geodata production and 3D modeling. Klaxoon by Wrike provides an online collaboration platform, and ARTEFACTO creates augmented and virtual reality solutions.

A notable pattern among these companies is their geographical concentration. Many of them, including Broadpeak, Sinari, and BlueKanGo, are headquartered in Cesson-Sévigné. Other significant clusters are found in Rennes, with companies like Klaxoon by Wrike, Digitaleo, and SYFADIS, indicating a concentration of software development activities in the region.

🇫🇷 Ille-et-Vilaine · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Broadpeak](https://www.tamtam.ai/c/broadpeak) (broadpeak.tv)<br>Broadpeak specializes in designing and manufacturing video delivery components for IPTV, Cable, and OTT services, enhancing quality of experience for subscribers worldwide | Software Development | 🇫🇷 Cesson-Sévigné | 269 | 2010 |
| 2 | [Sinari](https://www.tamtam.ai/c/sinari) (sinari.fr)<br>Provider of integrated digital software solutions for transport and logistics, supporting supply chain management and operational efficiency across multiple locations. | Software Development | 🇫🇷 Cesson-Sévigné | 247 | 2019 |
| 3 | [BlueKanGo](https://www.tamtam.ai/c/bluekango) (bluekango.com)<br>Offers customizable integrated QHSE software solutions with pre-configured applications, document management, and business intelligence, adaptable to diverse industries and organizational processes. | Software Development | 🇫🇷 Cesson-Sévigné | 169 | 1998 |
| 4 | [Siradel](https://www.tamtam.ai/c/siradel) (siradel.com)<br>A digital technology company, part of ENGIE Group, specializing in geodata production, 3D modeling, simulation, and AI for sustainable and digital transformation in various sectors | Software Development | 🇫🇷 Saint-Grégoire | 150 | 1994 |
| 5 | [Klaxoon by Wrike](https://www.tamtam.ai/c/klaxoon-by-wrike) (klaxoon.com)<br>An online collaboration platform with 10 visual tools, boosting engagement, productivity, and innovation for teams in various organizations worldwide | Software Development | 🇫🇷 Rennes | 146 | 2015 |
| 6 | [ARTEFACTO](https://www.tamtam.ai/c/artefacto-betton) (artefacto-ar.com)<br>Creation of augmented reality virtual reality and 3D visualization solutions through SaaS software and professional production services for architecture urban planning and industry | Software Development | 🇫🇷 Betton | 143 | 1998 |
| 7 | [Digitaleo](https://www.tamtam.ai/c/digitaleo) (digitaleo.com)<br>Digitaleo offers a relational marketing solution for businesses to manage loyalty programs and direct marketing campaigns to drive in-store traffic effectively | Software Development | 🇫🇷 Rennes | 133 | 2004 |
| 8 | [Adventiel](https://www.tamtam.ai/c/adventiel) (adventiel.fr)<br>Adventiel is a specialized consultancy firm assisting agricultural and food industries in transitioning to sustainable models through customized digital solutions | Software Development | 🇫🇷 Pacé | 107 |  |
| 9 | [SYFADIS](https://www.tamtam.ai/c/syfadis) (bealink.com)<br>Innovative solution for talent development and assessment through Syfadis Experience LMS software suite used by over 250 leading organizations | Software Development | 🇫🇷 Rennes | 93 | 2001 |
| 10 | [Famileo](https://www.tamtam.ai/c/famileo) (famileopro.com)<br>A mobile app for social networking connecting families to easily share photos and messages with elderly members who are offline | Software Development | 🇫🇷 Saint-Malo | 79 | 2015 |
| 11 | [ETIAM](https://www.tamtam.ai/c/etiam) (acetiam.eu)<br>The company provides integrated telemedicine services, allowing health professionals to access, store, share patient records securely and efficiently worldwide | Software Development | 🇫🇷 Vern-sur-Seiche | 68 | 1997 |
| 12 | [Orfeo.pro](https://www.tamtam.ai/c/orfeo-pro) (orfeo.pro)<br>Orfeo offers cloud-based software for arts organizations to efficiently promote, organize, and manage their projects, serving festivals, concert halls, ensembles, orchestras, and dance/theater companies | Software Development | 🇫🇷 Rennes | 67 | 2012 |
| 13 | [DK](https://www.tamtam.ai/c/dk-rennes) (d-k.io)<br>DK offers carbon measurement and management solutions for the advertising industry, providing services such as audits, consulting, SaaS platforms, and calculation APIs | Software Development | 🇫🇷 Rennes | 57 | 2021 |
| 14 | [Follow Health](https://www.tamtam.ai/c/follow-health) (follow.fr)<br>Follow is a healthcare company in Europe that provides doctors and surgeons with a smart solution to manage patient records efficiently, improving patient health | Software Development | 🇫🇷 Rennes | 53 |  |
| 15 | [AMA XpertEye](https://www.tamtam.ai/c/ama-xperteye) (amaxperteye.com)<br>Global provider of productivity applications for frontline workforce, using assisted Reality and AI for remote support, digitized work instructions, and inspections Promoting sustainability and innovation | Software Development | 🇫🇷 Rennes | 51 | 2014 |
| 16 | [Fruggr](https://www.tamtam.ai/c/fruggr) (fruggr.io)<br>cloud-based software providing automated analysis and improvement of ecological and social footprints of corporate digital platforms for sustainable performance | Software Development | 🇫🇷 Rennes | 47 | 2020 |
| 17 | [Script&Go](https://www.tamtam.ai/c/script-and-go) (scriptandgo.com)<br>Provides mobile applications for capturing, processing, and sharing information to improve productivity and streamline fieldwork operations across industries. | Software Development | 🇫🇷 Rennes | 35 | 2011 |
| 18 | [Familea](https://www.tamtam.ai/c/familea) (abelium-collectivites.fr)<br>Abelium Collectivités specializes in developing innovative and high-performing web-based management software solutions for early childhood, children, and youth structures | Software Development | 🇫🇷 Pleurtuit | 31 | 1999 |
| 19 | [Polymorph](https://www.tamtam.ai/c/polymorph) (polymorph.fr)<br>Creative studio producing 3D-4D cartoon animations and real-time interactive 3D applications for entertainment, museums, theme parks, and corporate communication. | Software Development | 🇫🇷 Pacé | 30 | 2002 |
| 20 | [Diwali](https://www.tamtam.ai/c/diwali) (diwali-by-kardi.com)<br>Diwali, a brand of Kardi, specializes in accessibility solutions for websites to promote digital inclusion, offering a user-friendly plugin for reading and understanding content | Software Development | 🇫🇷 Rennes | 29 |  |
| 21 | [Klarys](https://www.tamtam.ai/c/klarys) (klarys.io)<br>Connects fresh food industry, retailers, and wholesalers for efficient, transparent, and sustainable buying and selling. Automates transactions, reduces stock-outs, improves data reliability. | Software Development | 🇫🇷 Rennes | 28 | 2016 |
| 22 | [EDSI](https://www.tamtam.ai/c/edsi-cesson-sevigne) (edsisecurity.com)<br>Specialized R&D company with 25 years of experience in Embedded Security, securing products and evaluating resistance to field attacks Subsidiary of Kudelski Group | Software Development | 🇫🇷 Cesson-Sévigné | 28 | 1990 |
| 23 | [Therenva](https://www.tamtam.ai/c/therenva) (therenva.com)<br>Develops advanced imaging software tools for cardiovascular procedures utilizing image processing, deep learning, and biomechanical simulation to assist in endovascular interventions | Software Development | 🇫🇷 Rennes | 27 | 2007 |
| 24 | [OpenFire](https://www.tamtam.ai/c/openfire) (openfire.fr)<br>OpenFire develops management solutions for chimney, stove, heating, air conditioning, maintenance, and intervention sectors, using Odoo platform for a wide functional scope | Software Development | 🇫🇷 Saint-Grégoire | 27 | 2012 |
| 25 | [TEC3H](https://www.tamtam.ai/c/tec3h) (tec3h.fr)<br>Provides software for used vehicle management, offering centralized stock control, sales journey management, and website creation for automotive professionals. | Software Development | 🇫🇷 La Mézière | 25 | 2014 |
| 26 | [Sogescot](https://www.tamtam.ai/c/sogescot) (sogescot.com)<br>Sogescot develops and distributes software solutions for accountants to increase productivity, security, visibility, and expertise in financial consolidation services | Software Development | 🇫🇷 Cesson-Sévigné | 25 |  |
| 27 | [VeoNum](https://www.tamtam.ai/c/veonum) (veonum.com)<br>Rennes-based consultancy firm with a human-centric approach, offering tailored training, benefits, and a focus on R&D in AI, machine learning, and video streaming technologies Join our team! | Software Development | 🇫🇷 Rennes | 25 | 2018 |
| 28 | [Pysae](https://www.tamtam.ai/c/pysae) (web.pysae.com)<br>Innovative solution providing real-time passenger information in public transport using lightweight system with smartphones installed on buses | Software Development | 🇫🇷 Rennes | 25 | 2014 |
| 29 | [JANUS Engineering France](https://www.tamtam.ai/c/janus-engineering-france) (janus-engineering.com)<br>Specialists in Siemens software enabling intelligent digitalization of industrial design, production, process optimization, training, and customized application integration. | Software Development | 🇫🇷 Saint-Malo | 24 | 2001 |
| 30 | [GMV](https://www.tamtam.ai/c/gmv-rennes) (gmvet.fr)<br>Provider of digital solutions for veterinarians, offering tools and services to streamline veterinary practices and enhance patient care | Software Development | 🇫🇷 Rennes | 24 |  |

## 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.

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- [Subscription businesses in the Ille-et-Vilaine department](https://www.tamtam.ai/l/subscription-businesses-ille-et-vilaine) (45)
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- [Higher Education companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/higher-education-companies-ille-et-vilaine) (41)
- [Legal Services companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/legal-services-companies-ille-et-vilaine) (41)

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Source: https://www.tamtam.ai/l/software-development-companies-ille-et-vilaine