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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
SPIE Francespie.fr
Global actor in energy, digital, and industrial transitions, offering concrete solutions for decarbonizing buildings, industries, and territories through various technical services. |
9,833 | |||
| 2 |
OVHcloudovhcloud.com
Global player and leading European cloud provider operating 450,000 servers within 43 data centers across 4 continents, reaching 1.6 million customers. |
3,251 | |||
| 3 | 2,040 | ||||
| 4 | 745 | ||||
| 5 |
Stelogystelogy.com
Operator and Integrator of VoIP and ToIP services, offering telephony solutions specifically designed for small and medium-sized enterprises. |
501 | |||
| 6 |
Hexanethexanet.fr
A Reims-based team of internet, network, and telecommunications professionals offering specialized services such as telecom, unified telephony, hosting, and more |
225 | |||
| 7 | 155 | ||||
| 8 |
Be-Cloudbe-cloud.fr
Support SMEs adoption Microsoft solutions with expert consulting, training, proactive maintenance, and infrastructure optimization for secure, efficient cloud environments. |
116 | |||
| 9 |
Groupe ANTARES | Infogérance & Services Numériquesantares.fr
Providing IT managed services, infrastructure supervision, information system security, connectivity cabling, and multimedia solutions for private companies and public organizations across France. |
111 | |||
| 10 | 106 | ||||
| 11 | 105 | ||||
| 12 | 100 | ||||
| 13 |
Casteliscastelis.com
Develops custom software solutions for various sectors, including e-commerce, works councils, service companies, and general businesses, covering web technologies and database management. |
93 | |||
| 14 |
Trustteam Francetrustteam.fr
With nearly 60 years of experience, the company provides comprehensive IT solutions, specializing in design, deployment, and maintenance to meet clients' digital transformation needs |
92 | |||
| 15 |
Synovo Groupsynovo-group.com
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 |
87 | |||
| 16 | 85 | ||||
| 17 | 64 | ||||
| 18 |
ESPACE TECHNOLOGIEespace-technologie.com
Provides IT solutions, networks, hardware, security, internet, application development, management software, ERP, telecom, and data center services for businesses. |
60 | |||
| 19 |
OCI RendezNousMeilleursoci-rendeznousmeilleurs.fr
OCI Group is a full-service IT and digital company in France, focusing on cloud, cybersecurity, networking, and more, prioritizing personal growth and authenticity |
55 | |||
| 20 |
Axialysaxialys.com
French CCaaS platform combining cloud telephony, contact center solution, conversational AI. Also own telecom carrier. Made in France and GDPR compliant. |
51 | |||
| 21 |
NXO Telecomnxo.eu
NXO Telecom, a subsidiary of NXO France group, specializes in digital integration and management for businesses, focusing on communication, collaboration, infrastructure, security, and services |
49 | |||
| 22 |
SIB - Agence Symarissib.fr
A cooperative digital healthcare provider specializing in mental health information systems, serving over 620 healthcare facilities and local governments |
44 | |||
| 23 |
novadysnovadys.fr
Develops collaborative cloud and mobile software solutions for project and time management, including certified tools for project workflow, non-conformity, and continuous improvement. |
43 | |||
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. | |||||
| 24 |
TL systèmestl-systemes.fr
TL Systèmes, a member of Trustteam Group, offers 360° IT solutions to clients, specializing in design, deployment, and maintenance of various technology solutions |
42 | |||
| 25 |
Scalingoscalingo.com
Platform as a Service enabling quick and easy application hosting without server management, simplifying cloud hosting and empowering developers to manage application lifecycles efficiently |
41 | |||
| 26 |
IPGARDEipgarde.com
Provides enterprise-level international cloud hosting services and solutions for businesses from SMB to Fortune 500, ensuring high customer satisfaction for various applications. |
36 | |||
| 27 |
Agora Calycéagoracalyce.com
Specialized in custom private cloud hosting, cost-effective strategies, ISO-certified security, complex project management, and 24/7 cloud environment operations. |
36 | |||
| 28 |
Air Cloudair-cloud.fr
Support and guidance for deploying Microsoft cloud applications, user training, security control, budget management, and infrastructure optimization for businesses. |
35 | |||
| 29 |
ESTEL NUMERIQUEestel-numerique.com
Innovative IT services company developing Agritech and SME software solutions to help professionals implement new technologies for their expert advice |
33 | |||
| 30 |
OPSops-services.fr
OPS is a specialized company in IT, telephony, and internet networks for professionals, providing flexible solutions in security, telecommunications, hosting, and maintenance |
31 | |||
| 31 |
Alliance Informatiquealliance-informatique.fr
Comprehensive IT and telephony solutions provider for small and medium businesses, offering services from engineering to deployment, focusing on digital transformation |
27 | |||
| 32 |
ACKnowledgeacknowledge.fr
Modernization of IT infrastructures, with a strong focus on cybersecurity and cloud solutions, systematically integrating automation into projects. |
24 | |||
| 33 |
XSALTOalpilink.fr
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 |
20 | |||
| 34 |
IT CONSULTANT SERVICESitconsultant.fr
Specializing in Cloud Architecture & Security, IT Consultant Services helps clients migrate workloads to the cloud and design new delivery models with cloud technologies |
16 | |||
| 35 |
SFR Business Estsfrbusiness.fr
SFR Business Distribution is a national distributor of business solutions, offering a range of services from mobile to IoT, supporting growth and digital transformation |
16 | |||
| 36 |
SELCEONselceon.com
Specializes in consulting, integration, and management of next-generation work environments, leveraging Workspace One and combining Modern Management and VDI solutions for clients. |
15 | |||
| 37 |
Le 16 Solutionsle16solutions.com
16Solutions provides B2B IT services since 1988, offering expertise in hardware, software, development, hosting, and more, with a focus on building long-lasting partnerships |
13 | |||
| 38 |
NIS GROUP FRANCEnis-group.fr
A professional consulting firm offering IT, telecommunications, and cybersecurity services with a focus on customer satisfaction, tailored solutions, and continuous training |
12 | |||
| 39 |
Netalisnetalis.fr
Provides telecommunication services like fiber and radio links, offers hosted services including messaging, virtual hosting, VoIP, mobile telephony, and remote backup. |
11 | |||
| 40 |
KIWI BACKUP - L'intelligence de la sauvegardekiwi-backup.com
A pioneer in outsourced backup, providing secure data storage solutions in French data centers for businesses of all sizes Offering tailored services and support |
11 | |||
| 41 |
ADN SYSTEMES / DIXINFORadn-systemes.fr
Technology and information services company located in France, specializing in providing a range of technological solutions and services to clients |
11 | |||
| 42 |
ARIS Informatique - Prestataire informatiquearis-informatique.fr
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 |
9 | |||
| 43 |
ScaleDEVscaledev.fr
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 |
8 | |||
| 44 |
LINKOFFICElinkoffice.fr
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 |
8 | |||
| 45 |
Thalyoscyberpreventys.com
A digital services company specializing in developing, securing, and maintaining IT infrastructure while focusing on cybersecurity to make businesses cyber-resilient |
5 | |||
| 46 |
BIT CONSULTING
Engineering and consulting firm specializing in cloud infrastructure, OpenStack, monitoring solutions, network security, and operational efficiency enhancement. |
4 | |||
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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 Grand Est
- The largest companies in Grand Est 5,700
- Multinational companies in Grand Est 787
- Companies with in-house R&D in Grand Est 640
- Manufacturers in Grand Est 573
- Retail chains in Grand Est 529
- Public sector organisations in Grand Est 425
- Family-owned companies in Grand Est 365
- Hardware manufacturers in Grand Est 342
- Professional services firms in Grand Est 316
- Distributors and wholesalers in Grand Est 307
- Critical infrastructure operators in Grand Est 257
- IT services companies in Grand Est 248
- SaaS companies in Grand Est 216
- Education providers in Grand Est 215
- IT Services and IT Consulting companies in Grand Est 213
- Software Development companies in Grand Est 211
- Healthcare providers in Grand Est 202
- Construction companies in Grand Est 196
- Contract manufacturers in Grand Est 192
- Retail companies in Grand Est 169
- Government Administration companies in Grand Est 167
- Industrial Machinery Manufacturing companies in Grand Est 166
- Consulting firms in Grand Est 165
- Food and beverage companies in Grand Est 161
The same list elsewhere in France
- Managed service providers in France 749
- Managed service providers in Île-de-France 322
- Managed service providers in the Hauts-de-Seine department 122
- Managed service providers in Auvergne-Rhône-Alpes 89
- Managed service providers in Occitanie 49
- Managed service providers in Pays de la Loire 47
- Managed service providers in the Rhône department 45
- Managed service providers in Hauts-de-France 42
- Managed service providers in Nouvelle-Aquitaine 33
- Managed service providers in Provence-Alpes-Côte d'Azur 32
- Managed service providers in the Nord department 26
- Managed service providers in the Yvelines department 25
- Managed service providers in Paris 123