# IT services companies headquartered in the Hérault department
Tamtam tracks 53 IT services companies headquartered in the Hérault department. This list ranks the 30 largest by number of employees on LinkedIn, led by Services Network Security, Acelys Services Numériques and Kaliop. Their median headcount is 37. Half of them were founded in 2002 or later. The most common headquarters are Montpellier (17), Béziers (2) and Castelnau-le-Lez (2).
The Hérault department hosts a concentration of IT services and software development companies, many of which are mid-sized firms. These companies offer a range of specialized digital solutions, from cybersecurity to custom application development. Most of these firms are headquartered in Montpellier, indicating a regional hub for digital expertise.
Services Network Security specializes in securing internet gateways, while Acelys Services Numériques focuses on software development and cybersecurity. Kaliop delivers multi-channel content management solutions, and Groupe ISIA provides responsible digital transformation services. A common pattern observed is the prevalence of companies founded in the early 2000s, suggesting a period of significant growth in the region's tech sector.
🇫🇷 Hérault · 30 companies · Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Services Network Security](https://www.tamtam.ai/c/services-network-security) (sns-security.fr)
Specializes in securing internet gateways and VPN interconnections, managing over 1200 sites nationally and internationally. First Fortinet certified MSSP partner in France. | Computer and Network Security | 🇫🇷 Montpellier | 189 | 2002 |
| 2 | [Acelys Services Numériques](https://www.tamtam.ai/c/acelys-services-numeriques) (acelys.fr)
An independent ESN in Montpellier, specializing in software development, business intelligence, dematerialization, cybersecurity, and infrastructure, with a focus on talent development and internal promotion | Software Development | 🇫🇷 Montpellier | 175 | 1997 |
| 3 | [Kaliop](https://www.tamtam.ai/c/kaliop) (kaliop.com)
Delivers multi-channel content management solutions. Offers professional services from consulting to hosting for digital projects in various industries. | Technology, Information and Internet | 🇫🇷 Montpellier | 120 | 2002 |
| 4 | [Groupe ISIA](https://www.tamtam.ai/c/groupe-isia) (groupe-isia.com)
This company specializes in responsible digital transformation services, including digital frescoes, web eco-design, accessibility audits, and carbon footprint measurement | IT Services and IT Consulting | 🇫🇷 Saint-Mathieu-de-Tréviers | 107 | 1996 |
| 5 | [Armonie](https://www.tamtam.ai/c/armonie) (armonie.group)
Specialized teams providing human, software, and hardware solutions focused on IBM i platform development, training, and operations with agile management. | IT Services and IT Consulting | 🇫🇷 Montpellier | 106 | 2022 |
| 6 | [Synanto](https://www.tamtam.ai/c/synanto) (synanto.fr)
This is a human-sized ESN offering stimulating missions, career development, and expert consulting services, primarily in banking, finance, and insurance sectors. | IT Services and IT Consulting | 🇫🇷 Montpellier | 82 | 2007 |
| 7 | [Proxiel](https://www.tamtam.ai/c/proxiel) (proxiel.com)
French digital services company provides IT maintenance, software development, and IT solutions, with a training hub for skill development for employees and partners. | IT Services and IT Consulting | 🇫🇷 Montpellier | 68 | 1999 |
| 8 | [Synox](https://www.tamtam.ai/c/synox) (synox.io)
Specializing in mobile and collaborative IT solutions, this company offers tailored development services to meet the needs of professionals and businesses, focusing on customer satisfaction, innovation, quality, and the environment | IT Services and IT Consulting | 🇫🇷 Castelnau-le-Lez | 62 | 2005 |
| 9 | [LRD](https://www.tamtam.ai/c/lrd) (groupe.avec.fr)
LRD is a computer engineering consulting firm specializing in designing and developing custom applications for service kiosks, industrial machines and supervision systems | Software Development | 🇫🇷 Castelnau-le-Lez | 54 | 2006 |
| 10 | [ADEC SAS](https://www.tamtam.ai/c/adec-sas) (adec-sas.com)
Provides secure electronic data exchange and digital archiving services for judicial officers, institutions, and financial organizations ensuring confidentiality and compliance. | Software Development | 🇫🇷 Pérols | 49 | 2001 |
| 11 | [Spiriit](https://www.tamtam.ai/c/spiriit) (spiriit.com)
Creation and optimization of digital ecosystems through e-commerce platforms, custom application development, UX design, data, and AI to drive real business impact. | Technology, Information and Internet | 🇫🇷 Montpellier | 46 | 1998 |
| 12 | [Informatique & Réseaux](https://www.tamtam.ai/c/informatique-and-reseaux) (inforeseaux.com)
IT services and engineering company specializing in computer technology solutions and services | IT Services and IT Consulting | 🇫🇷 Montpellier | 45 | 1994 |
| 13 | [COGITIS](https://www.tamtam.ai/c/cogitis) (cogitis.fr)
A public operator of digital services assisting local authorities in digital transformation since 1998, managing information systems and projects | IT Services and IT Consulting | 🇫🇷 Montpellier | 44 | 1998 |
| 14 | [TALARON SERVICES](https://www.tamtam.ai/c/talaron-services) (talaron-services.com)
TALARON Services is an ESN that specializes in being a socially inclusive company, employing at least 55% of people with disabilities | Software Development | 🇫🇷 Montpellier | 42 | 2010 |
| 15 | [Codéin](https://www.tamtam.ai/c/codein) (codein.fr)
Codéin is a web agency specializing in open source solutions, offering services for building, deploying, and managing web applications on the cloud | Internet Publishing | 🇫🇷 Montpellier | 37 | 2014 |
| 16 | [IOcean](https://www.tamtam.ai/c/iocean) (iocean.fr)
Provides IT engineering, focusing on custom web software development, Intranets, Extranets, and management software, utilizing OpenSource solutions like Java and PHP. | IT Services and IT Consulting | 🇫🇷 Montpellier | 37 | 2001 |
| 17 | [Compufirst](https://www.tamtam.ai/c/compufirst) (compufirst.com)
Innovative IT solutions provider for French Microenterprises, SMEs, and ETIs, offering a wide range of products, services, financing options, and personalized support | Computer Hardware Manufacturing | 🇫🇷 Montpellier | 35 | 2006 |
| 18 | [toHero](https://www.tamtam.ai/c/tohero) (tohero.fr)
Established in 2015, a digital transformation studio specializing in open-source technologies Offers expertise in e-commerce, complex business applications, and mobile app development | Technology, Information and Internet | 🇫🇷 Montpellier | 33 | 2015 |
| 19 | [BEEMO TECHNOLOGIE](https://www.tamtam.ai/c/beemo-technologie) (beemotechnologie.com)
Beemo Technologie provides secure and automated data backup solutions for businesses, ensuring the preservation and restoration of critical data in multiple secure locations | IT Services and IT Consulting | 🇫🇷 Pérols | 33 | 2002 |
| 20 | [IPSIP Group](https://www.tamtam.ai/c/ipsip-group) (ipsip.eu)
IPSIP offers modular data center solutions addressing energy and security constraints, providing customized design, manufacturing, deployment, and global monitoring platform solutions in 12 weeks | IT Services and IT Consulting | 🇫🇷 Vendargues | 33 | 2009 |
| 21 | [UBIC](https://www.tamtam.ai/c/ubic) (ubic.fr)
Ubic provides video conferencing and telepresence solutions from top manufacturers to meet professional needs for a satisfying experience | IT Services and IT Consulting | 🇫🇷 Mauguio | 33 | 2009 |
| 22 | [ABSYS Informatique SAS](https://www.tamtam.ai/c/absys-informatique-sas) (absys-services.fr)
A company specializing in analyzing and meeting clients' needs, providing services from conception to maintenance focused on building, maintaining, evolving, and securing businesses | Computer and Network Security | 🇫🇷 Béziers | 31 | 1994 |
| 23 | [OVEA](https://www.tamtam.ai/c/ovea) (ovea.com)
Specializing since 2002 in hosting services, high-speed internet access, and integrating open-source solutions with a focus on a competent team and distributed infrastructure | IT Services and IT Consulting | 🇫🇷 Montpellier | 30 | 2002 |
| 24 | [Believe IT](https://www.tamtam.ai/c/believe-it) (believeit.fr)
BELIEVE IT is an IT service company in Montpellier, founded by developers, specializing in software development and technology solutions | IT Services and IT Consulting | 🇫🇷 Montpellier | 26 | 2016 |
| 25 | [Synapse Informatique](https://www.tamtam.ai/c/synapse-informatique) (synapse-info.com)
Develops custom web and mobile software for industrial risks, health, innovative services, and water resource management with flood prevention solutions. | Technology, Information and Internet | 🇫🇷 Grabels | 24 | 1997 |
| 26 | [Do IT Now](https://www.tamtam.ai/c/do-it-now) (doitnowgroup.com)
A leading provider of high performance computing solutions, specializing in advanced technologies such as Big Data, AI, cloud computing, and storage | IT Services and IT Consulting | 🇫🇷 Lattes | 24 | 2020 |
| 27 | [Rakuten DX](https://www.tamtam.ai/c/rakuten-dx) (rakuten-dx.com)
Specializing in mobile app development, Rakuten DX utilizes No code & Low code technologies to deliver quality, secure apps with a focus on design and user experience | Software Development | 🇫🇷 Montpellier | 22 | |
| 28 | [Yupiik](https://www.tamtam.ai/c/yupiik) (yupiik.com)
The company helps clients navigate technological shifts through end-to-end tech-enabled transformations, focusing on IT infrastructure, architecture, operations, and technology strategy | IT Services and IT Consulting | 🇫🇷 Saint-Drézéry | 21 | 2009 |
| 29 | [CibleWeb](https://www.tamtam.ai/c/cibleweb) (cibleweb.com)
With over 20 years of experience, this company specializes in web marketing, SEO, SEA, SEM, e-commerce, and training services for businesses | IT Services and IT Consulting | 🇫🇷 Béziers | 20 | 2001 |
| 30 | [RΞZΞT](https://www.tamtam.ai/c/r-z-t) (rezet.net)
Provider of digital solutions for businesses, offering a wide range of tools tailored to meet individual needs Based near Montpellier, France | Software Development | 🇫🇷 Castries | 20 | 2019 |
## 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 Hérault department
- [The largest companies in the Hérault department](https://www.tamtam.ai/l/largest-companies-herault) (1,461)
- [Companies with in-house R&D in the Hérault department](https://www.tamtam.ai/l/r-and-d-companies-herault) (155)
- [Retail chains in the Hérault department](https://www.tamtam.ai/l/retail-chains-herault) (131)
- [SaaS companies in the Hérault department](https://www.tamtam.ai/l/saas-companies-herault) (110)
- [Software Development companies in the Hérault department](https://www.tamtam.ai/l/software-development-companies-herault) (107)
- [Multinational companies in the Hérault department](https://www.tamtam.ai/l/multinational-companies-herault) (103)
- [Professional services firms in the Hérault department](https://www.tamtam.ai/l/professional-services-firms-herault) (84)
- [Manufacturers in the Hérault department](https://www.tamtam.ai/l/manufacturers-herault) (71)
- [Public sector organisations in the Hérault department](https://www.tamtam.ai/l/public-sector-organisations-herault) (68)
- [Education providers in the Hérault department](https://www.tamtam.ai/l/education-companies-herault) (61)
- [Hardware manufacturers in the Hérault department](https://www.tamtam.ai/l/hardware-companies-herault) (61)
- [Critical infrastructure operators in the Hérault department](https://www.tamtam.ai/l/critical-infrastructure-operators-herault) (57)
- [IT Services and IT Consulting companies in the Hérault department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-herault) (57)
- [Real Estate companies in the Hérault department](https://www.tamtam.ai/l/real-estate-companies-herault) (56)
- [Retail companies in the Hérault department](https://www.tamtam.ai/l/retail-companies-herault) (54)
- [Higher Education companies in the Hérault department](https://www.tamtam.ai/l/higher-education-companies-herault) (52)
- [Family-owned companies in the Hérault department](https://www.tamtam.ai/l/family-owned-companies-herault) (50)
- [Law Practice companies in the Hérault department](https://www.tamtam.ai/l/law-practice-companies-herault) (49)
- [Accounting firms in the Hérault department](https://www.tamtam.ai/l/accounting-firms-herault) (48)
- [Healthcare providers in the Hérault department](https://www.tamtam.ai/l/healthcare-providers-herault) (48)
- [Accounting companies in the Hérault department](https://www.tamtam.ai/l/accounting-companies-herault) (48)
- [Distributors and wholesalers in the Hérault department](https://www.tamtam.ai/l/distributors-and-wholesalers-herault) (48)
- [Pharmaceutical companies in the Hérault department](https://www.tamtam.ai/l/pharmaceutical-companies-herault) (44)
- [Subscription businesses in the Hérault department](https://www.tamtam.ai/l/subscription-businesses-herault) (44)
## The same list elsewhere in France
- [IT services companies in France](https://www.tamtam.ai/l/it-services-companies-france) (5,000)
- [IT services companies in Île-de-France](https://www.tamtam.ai/l/it-services-companies-ile-de-france) (2,624)
- [IT services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-companies-hauts-de-seine) (737)
- [IT services companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/it-services-companies-auvergne-rhone-alpes) (519)
- [IT services companies in the Rhône department](https://www.tamtam.ai/l/it-services-companies-rhone) (286)
- [IT services companies in Occitanie](https://www.tamtam.ai/l/it-services-companies-occitanie) (280)
- [IT services companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/it-services-companies-provence-alpes-cote-dazur) (268)
- [IT services companies in Grand Est](https://www.tamtam.ai/l/it-services-companies-grand-est) (248)
- [IT services companies in Hauts-de-France](https://www.tamtam.ai/l/it-services-companies-hauts-de-france) (236)
- [IT services companies in Pays de la Loire](https://www.tamtam.ai/l/it-services-companies-pays-de-la-loire) (205)
- [IT services companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/it-services-companies-nouvelle-aquitaine) (194)
- [IT services companies in the Nord department](https://www.tamtam.ai/l/it-services-companies-nord) (170)
- [IT services companies in the Haute-Garonne department](https://www.tamtam.ai/l/it-services-companies-haute-garonne) (158)
- [IT services companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/it-services-companies-bouches-du-rhone) (155)
- [IT services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/it-services-companies-loire-atlantique) (130)
- [IT services companies in the Yvelines department](https://www.tamtam.ai/l/it-services-companies-yvelines) (121)
- [IT services companies in Brittany](https://www.tamtam.ai/l/it-services-companies-brittany) (113)
- [IT services companies in the Val-de-Marne department](https://www.tamtam.ai/l/it-services-companies-val-de-marne) (101)
- [IT services companies in the Gironde department](https://www.tamtam.ai/l/it-services-companies-gironde) (99)
- [IT services companies in Paris](https://www.tamtam.ai/l/it-services-companies-paris) (1,386)
- [IT services companies in Lyon](https://www.tamtam.ai/l/it-services-companies-lyon) (171)
- [IT services companies in Boulogne-Billancourt](https://www.tamtam.ai/l/it-services-companies-boulogne-billancourt) (125)
- [IT services companies in Toulouse](https://www.tamtam.ai/l/it-services-companies-toulouse) (119)
- [IT services companies in Levallois-Perret](https://www.tamtam.ai/l/it-services-companies-levallois-perret) (94)
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Source: https://www.tamtam.ai/l/it-services-companies-herault