# Managed service providers headquartered in Grand Est

Tamtam tracks 46 managed service providers headquartered in Grand Est. This list ranks all of them by number of employees on LinkedIn, led by SPIE France, OVHcloud and Smile. Their median headcount is 43. Half of them were founded in 2002 or later. The most common headquarters are Strasbourg (7), Illkirch-Graffenstaden (2) and Levallois-Perret (2).

The companies listed are primarily managed service providers in the Grand Est region, with a strong emphasis on IT services, software development, and telecommunications. This selection includes firms of varying sizes, from large global actors like SPIE France, which focuses on energy and digital transitions, and OVHcloud, a major European cloud provider, to mid-sized companies such as adista, offering comprehensive IT services, and Hexanet, specializing in telecom and hosting.

A notable pattern among these companies is the significant presence of IT services and software development firms founded in the 1990s and early 2000s, indicating a mature yet evolving tech landscape. For instance, Smile provides open-source digital services, Ospi develops certified health data software, and SdV focuses on content management and secure hosting. Digora specializes in data management, supporting digital transformation, while Stelogy offers VoIP and ToIP services for SMEs. Trustteam France also provides comprehensive IT solutions with a focus on digital transformation.

🇫🇷 Grand Est · 46 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [SPIE France](https://www.tamtam.ai/c/spie-france) (spie.fr)<br>Global actor in energy, digital, and industrial transitions, offering concrete solutions for decarbonizing buildings, industries, and territories through various technical services. | IT Services and IT Consulting | 🇫🇷 Cergy-Pontoise | 9,833 |  |
| 2 | [OVHcloud](https://www.tamtam.ai/c/ovhcloud) (ovhcloud.com)<br>Global player and leading European cloud provider operating 450,000 servers within 43 data centers across 4 continents, reaching 1.6 million customers. | Software Development | 🇫🇷 Roubaix | 3,251 | 1999 |
| 3 | [Smile](https://www.tamtam.ai/c/smile) (smile.eu)<br>This company offers open-source digital services, including e-commerce platforms, business applications, and data management, to enhance client businesses with reliable technology decisions. | IT Services and IT Consulting | 🇫🇷 Asnières sur seine | 2,040 | 1991 |
| 4 | [adista](https://www.tamtam.ai/c/adista) (adista.fr)<br>Provides comprehensive IT services, including hosting, telecommunications, and system integration, for SMEs, public entities, and healthcare organizations, offering high-speed internet access and disaster recovery. | IT Services and IT Consulting | 🇫🇷 Maxéville | 745 | 1981 |
| 5 | [Stelogy](https://www.tamtam.ai/c/stelogy) (stelogy.com)<br>Operator and Integrator of VoIP and ToIP services, offering telephony solutions specifically designed for small and medium-sized enterprises. | Telecommunications | 🇫🇷 Paris | 501 | 1999 |
| 6 | [Hexanet](https://www.tamtam.ai/c/hexanet) (hexanet.fr)<br>A Reims-based team of internet, network, and telecommunications professionals offering specialized services such as telecom, unified telephony, hosting, and more | IT Services and IT Consulting | 🇫🇷 Reims | 225 | 1997 |
| 7 | [Ospi](https://www.tamtam.ai/c/ospi) (ospi.fr)<br>Develops and hosts certified health data software for hospitals, specializing in health data and AI for over 1100 public and private health establishments. | Software Development | 🇫🇷 Lyon | 155 | 1998 |
| 8 | [Be-Cloud](https://www.tamtam.ai/c/be-cloud) (be-cloud.fr)<br>Support SMEs adoption Microsoft solutions with expert consulting, training, proactive maintenance, and infrastructure optimization for secure, efficient cloud environments. | Information Services | 🇫🇷 Paris | 116 | 2012 |
| 9 | [Groupe ANTARES \| Infogérance & Services Numériques](https://www.tamtam.ai/c/groupe-antares-infogerance-and-services-numeriques) (antares.fr)<br>Providing IT managed services, infrastructure supervision, information system security, connectivity cabling, and multimedia solutions for private companies and public organizations across France. | IT Services and IT Consulting | 🇫🇷 Levallois-Perret | 111 | 2001 |
| 10 | [SQI](https://www.tamtam.ai/c/sqi) (sqi.fr)<br>Helps companies in project mode, especially in construction, public works, and technical trades, build tailored information systems and offers IT services and partnerships. | Software Development | 🇫🇷 Versailles | 106 | 1990 |
| 11 | [SdV](https://www.tamtam.ai/c/sdv) (sdv.fr)<br>Provides flexible content management, secure hosting, custom development, and domain management to support digital projects for media and institutions. | Technology, Information and Internet | 🇫🇷 Strasbourg | 105 | 1981 |
| 12 | [Digora](https://www.tamtam.ai/c/digora) (deep.eu)<br>Expert in data management, supporting companies with digital transformation, infrastructure, maintenance, and innovation for availability, performance, and security. | IT Services and IT Consulting | 🇫🇷 Strasbourg | 100 | 1997 |
| 13 | [Castelis](https://www.tamtam.ai/c/castelis) (castelis.com)<br>Develops custom software solutions for various sectors, including e-commerce, works councils, service companies, and general businesses, covering web technologies and database management. | IT System Custom Software Development | 🇫🇷 Ivry-sur-Seine | 93 | 1999 |
| 14 | [Trustteam France](https://www.tamtam.ai/c/trustteam-france) (trustteam.fr)<br>With nearly 60 years of experience, the company provides comprehensive IT solutions, specializing in design, deployment, and maintenance to meet clients' digital transformation needs | IT Services and IT Consulting | 🇫🇷 Maxeville | 92 | 1981 |
| 15 | [Synovo Group](https://www.tamtam.ai/c/synovo-group) (synovo-group.com)<br>A digital services and software publishing company specializing in healthcare transport, offering a range of products and services including hosting, IT support, and software solutions | Software Development | 🇫🇷 Strasbourg | 87 | 2013 |
| 16 | [LCMH](https://www.tamtam.ai/c/lcmh) (lcmh.fr)<br>A digital services provider founded in 2009, offering a range of solutions to meet the digital needs of businesses | IT Services and IT Consulting | 🇫🇷 Mulhouse | 85 | 2009 |
| 17 | [AMOSSYS](https://www.tamtam.ai/c/amossys) (almond.eu)<br>Amossys is a French cybersecurity consultancy specializing in strategic sectors, providing expertise, accredited IT security evaluations, and a range of cyber services | Computer and Network Security | 🇫🇷 Rennes | 64 | 2007 |
| 18 | [ESPACE TECHNOLOGIE](https://www.tamtam.ai/c/espace-technologie) (espace-technologie.com)<br>Provides IT solutions, networks, hardware, security, internet, application development, management software, ERP, telecom, and data center services for businesses. | IT Services and IT Consulting | 🇫🇷 Challans | 60 | 1993 |
| 19 | [OCI RendezNousMeilleurs](https://www.tamtam.ai/c/oci-rendeznousmeilleurs) (oci-rendeznousmeilleurs.fr)<br>OCI Group is a full-service IT and digital company in France, focusing on cloud, cybersecurity, networking, and more, prioritizing personal growth and authenticity | IT Services and IT Consulting | 🇫🇷 Mundolsheim | 55 | 1979 |
| 20 | [Axialys](https://www.tamtam.ai/c/axialys) (axialys.com)<br>French CCaaS platform combining cloud telephony, contact center solution, conversational AI. Also own telecom carrier. Made in France and GDPR compliant. | Software Development | 🇫🇷 Levallois-Perret | 51 | 1999 |
| 21 | [NXO Telecom](https://www.tamtam.ai/c/nxo-telecom) (nxo.eu)<br>NXO Telecom, a subsidiary of NXO France group, specializes in digital integration and management for businesses, focusing on communication, collaboration, infrastructure, security, and services | IT Services and IT Consulting | 🇫🇷 WITTELSHEIM (Alsace) | 49 | 1989 |
| 22 | [SIB - Agence Symaris](https://www.tamtam.ai/c/sib-agence-symaris) (sib.fr)<br>A cooperative digital healthcare provider specializing in mental health information systems, serving over 620 healthcare facilities and local governments | Software Development | 🇫🇷 Rouffach | 44 | 1993 |
| 23 | [novadys](https://www.tamtam.ai/c/novadys) (novadys.fr)<br>Develops collaborative cloud and mobile software solutions for project and time management, including certified tools for project workflow, non-conformity, and continuous improvement. | Software Development | 🇫🇷 Saint-Martin-sur-le-Pré | 43 | 1996 |
| 24 | [TL systèmes](https://www.tamtam.ai/c/tl-systemes) (tl-systemes.fr)<br>TL Systèmes, a member of Trustteam Group, offers 360° IT solutions to clients, specializing in design, deployment, and maintenance of various technology solutions | IT Services and IT Consulting | 🇫🇷 Maxéville | 42 | 1964 |
| 25 | [Scalingo](https://www.tamtam.ai/c/scalingo) (scalingo.com)<br>Platform as a Service enabling quick and easy application hosting without server management, simplifying cloud hosting and empowering developers to manage application lifecycles efficiently | IT Services and IT Consulting | 🇫🇷 Strasbourg | 41 | 2015 |
| 26 | [IPGARDE](https://www.tamtam.ai/c/ipgarde) (ipgarde.com)<br>Provides enterprise-level international cloud hosting services and solutions for businesses from SMB to Fortune 500, ensuring high customer satisfaction for various applications. | IT Services and IT Consulting | 🇫🇷 Alixan | 36 | 2004 |
| 27 | [Agora Calycé](https://www.tamtam.ai/c/agora-calyce) (agoracalyce.com)<br>Specialized in custom private cloud hosting, cost-effective strategies, ISO-certified security, complex project management, and 24/7 cloud environment operations. | IT Services and IT Consulting | 🇫🇷 Strasbourg | 36 | 2013 |
| 28 | [Air Cloud](https://www.tamtam.ai/c/air-cloud) (air-cloud.fr)<br>Support and guidance for deploying Microsoft cloud applications, user training, security control, budget management, and infrastructure optimization for businesses. | Information Services | 🇫🇷 Illkirch-Graffenstaden | 35 | 2020 |
| 29 | [ESTEL NUMERIQUE](https://www.tamtam.ai/c/estel-numerique) (estel-numerique.com)<br>Innovative IT services company developing Agritech and SME software solutions to help professionals implement new technologies for their expert advice | IT Services and IT Consulting | 🇫🇷 Malzéville | 33 | 2007 |
| 30 | [OPS](https://www.tamtam.ai/c/ops) (ops-services.fr)<br>OPS is a specialized company in IT, telephony, and internet networks for professionals, providing flexible solutions in security, telecommunications, hosting, and maintenance | Telecommunications | 🇫🇷 Saint-Martin-sur-le-Pré | 31 | 2004 |
| 31 | [Alliance Informatique](https://www.tamtam.ai/c/alliance-informatique) (alliance-informatique.fr)<br>Comprehensive IT and telephony solutions provider for small and medium businesses, offering services from engineering to deployment, focusing on digital transformation | IT Services and IT Consulting | 🇫🇷 Entzheim | 27 | 2002 |
| 32 | [ACKnowledge](https://www.tamtam.ai/c/acknowledge) (acknowledge.fr)<br>Modernization of IT infrastructures, with a strong focus on cybersecurity and cloud solutions, systematically integrating automation into projects. | IT Services and IT Consulting | 🇫🇷 Paris | 24 | 2015 |
| 33 | [XSALTO](https://www.tamtam.ai/c/xsalto) (alpilink.fr)<br>French-based company offering secure hosting services with expert support, ISO 27001 certified data center, and a range of other services including cloud, e-commerce, and CRM | IT Services and IT Consulting | 🇫🇷 Seyssinet-Pariset | 20 | 1995 |
| 34 | [IT CONSULTANT SERVICES](https://www.tamtam.ai/c/it-consultant-services) (itconsultant.fr)<br>Specializing in Cloud Architecture & Security, IT Consultant Services helps clients migrate workloads to the cloud and design new delivery models with cloud technologies | IT System Design Services | 🇫🇷 Strasbourg | 16 | 2011 |
| 35 | [SFR Business Est](https://www.tamtam.ai/c/sfr-business-est) (sfrbusiness.fr)<br>SFR Business Distribution is a national distributor of business solutions, offering a range of services from mobile to IoT, supporting growth and digital transformation | Telecommunications | 🇫🇷 Metz | 16 | 1999 |
| 36 | [SELCEON](https://www.tamtam.ai/c/selceon) (selceon.com)<br>Specializes in consulting, integration, and management of next-generation work environments, leveraging Workspace One and combining Modern Management and VDI solutions for clients. | IT Services and IT Consulting | 🇫🇷 Asnières-sur-Seine | 15 | 2017 |
| 37 | [Le 16 Solutions](https://www.tamtam.ai/c/le-16-solutions) (le16solutions.com)<br>16Solutions provides B2B IT services since 1988, offering expertise in hardware, software, development, hosting, and more, with a focus on building long-lasting partnerships | Computer Networking Products | 🇫🇷 Frouard | 13 | 1988 |
| 38 | [NIS GROUP FRANCE](https://www.tamtam.ai/c/nis-group-france) (nis-group.fr)<br>A professional consulting firm offering IT, telecommunications, and cybersecurity services with a focus on customer satisfaction, tailored solutions, and continuous training | Computer and Network Security | 🇫🇷 Fagnières | 12 | 2010 |
| 39 | [Netalis](https://www.tamtam.ai/c/netalis) (netalis.fr)<br>Provides telecommunication services like fiber and radio links, offers hosted services including messaging, virtual hosting, VoIP, mobile telephony, and remote backup. | Telecommunications | 🇫🇷 Besançon | 11 | 2015 |
| 40 | [KIWI BACKUP - L'intelligence de la sauvegarde](https://www.tamtam.ai/c/kiwi-backup-l-intelligence-de-la-sauvegarde) (kiwi-backup.com)<br>A pioneer in outsourced backup, providing secure data storage solutions in French data centers for businesses of all sizes Offering tailored services and support | Computer and Network Security | 🇫🇷 Mulhouse | 11 | 2003 |
| 41 | [ADN SYSTEMES / DIXINFOR](https://www.tamtam.ai/c/adn-systemes-dixinfor) (adn-systemes.fr)<br>Technology and information services company located in France, specializing in providing a range of technological solutions and services to clients | IT Services and IT Consulting | 🇫🇷 Bréviandes | 11 | 2012 |
| 42 | [ARIS Informatique - Prestataire informatique](https://www.tamtam.ai/c/aris-informatique-prestataire-informatique) (aris-informatique.fr)<br>Specializing in digital transformation, the company offers tailored IT solutions including servers, network infrastructure, security, cloud services, VoIP, and website development to support clients long-term | IT Services and IT Consulting | 🇫🇷 Illkirch-Graffenstaden | 9 | 2007 |
| 43 | [ScaleDEV](https://www.tamtam.ai/c/scaledev) (scaledev.fr)<br>Champagne-based software engineering agency offering tailored digital solutions, from design to development, including websites, e-commerce, apps, SaaS, and more, with focus on quality, support, and security | Technology, Information and Internet | 🇫🇷 Saint-André-les-Vergers | 8 | 2010 |
| 44 | [LINKOFFICE](https://www.tamtam.ai/c/linkoffice) (linkoffice.fr)<br>Specializing in hosting and optimizing information systems, we design hybrid Cloud architectures tailored to specific business needs, particularly in the accounting profession, with over 230 hosted applications | Computer and Network Security | 🇫🇷 Strasbourg | 8 | 2004 |
| 45 | [Thalyos](https://www.tamtam.ai/c/thalyos) (cyberpreventys.com)<br>A digital services company specializing in developing, securing, and maintaining IT infrastructure while focusing on cybersecurity to make businesses cyber-resilient | IT Services and IT Consulting | 🇫🇷 Florange | 5 | 2002 |
| 46 | [BIT CONSULTING](https://www.tamtam.ai/c/bit-consulting)<br>Engineering and consulting firm specializing in cloud infrastructure, OpenStack, monitoring solutions, network security, and operational efficiency enhancement. | Engineering Services | 🇫🇷 Paris | 4 | 2020 |

## 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 Grand Est

- [The largest companies in Grand Est](https://www.tamtam.ai/l/largest-companies-grand-est) (5,700)
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- [Companies with in-house R&D in Grand Est](https://www.tamtam.ai/l/r-and-d-companies-grand-est) (640)
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- [Family-owned companies in Grand Est](https://www.tamtam.ai/l/family-owned-companies-grand-est) (365)
- [Hardware manufacturers in Grand Est](https://www.tamtam.ai/l/hardware-companies-grand-est) (342)
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- [Critical infrastructure operators in Grand Est](https://www.tamtam.ai/l/critical-infrastructure-operators-grand-est) (257)
- [IT services companies in Grand Est](https://www.tamtam.ai/l/it-services-companies-grand-est) (248)
- [SaaS companies in Grand Est](https://www.tamtam.ai/l/saas-companies-grand-est) (216)
- [Education providers in Grand Est](https://www.tamtam.ai/l/education-companies-grand-est) (215)
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- [Government Administration companies in Grand Est](https://www.tamtam.ai/l/government-administration-companies-grand-est) (167)
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## The same list elsewhere in France

- [Managed service providers in France](https://www.tamtam.ai/l/managed-service-providers-france) (749)
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- [Managed service providers in the Rhône department](https://www.tamtam.ai/l/managed-service-providers-rhone) (45)
- [Managed service providers in Hauts-de-France](https://www.tamtam.ai/l/managed-service-providers-hauts-de-france) (42)
- [Managed service providers in Nouvelle-Aquitaine](https://www.tamtam.ai/l/managed-service-providers-nouvelle-aquitaine) (33)
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Source: https://www.tamtam.ai/l/managed-service-providers-grand-est