# Professional services firms headquartered in the Hérault department

Tamtam tracks 84 professional services firms headquartered in the Hérault department. This list ranks the 30 largest by number of employees on LinkedIn, led by ALTRAD, Crystal and Inovéa. Their median headcount is 60. Half of them were founded in 1997 or later. The most common headquarters are Montpellier (15), Castelnau-le-Lez (2) and Lattes (2).

This selection of professional services firms in Hérault showcases a mix of established companies and younger firms, primarily concentrated around Montpellier. ALTRAD, founded in 1985, is a global provider of industrial services. Crystal, established in 1992, is a wealth management advisor, while Inovéa, founded in 2017, also operates in financial services. Biotope, from 1993, specializes in ecological engineering, and Groupe PSI Sécurité, founded in 1998, offers private security.

The data reveals a strong presence of companies in financial services and environmental services. For instance, Crystal and Inovéa are both prominent in wealth management and financial education. Similarly, ALTRAD and Biotope offer diverse environmental solutions. Most of the companies listed were founded between the mid-1980s and the late 1990s, indicating a period of significant growth for professional services in the region.

🇫🇷 Hérault · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [ALTRAD](https://www.tamtam.ai/c/altrad) (altrad.com)<br>Global provider of industrial services and equipment manufacturing, offering high-value solutions across energy, oil & gas, construction, and environmental sectors. | Environmental Services | 🇫🇷 Montpellier | 52,000 | 1985 |
| 2 | [Crystal](https://www.tamtam.ai/c/crystal) (groupe-crystal.com)<br>Leading independent wealth management advisor, offering private client services, investment solutions for professionals, and digital platforms for independent wealth managers, with national and international reach. | Financial Services | 🇫🇷 Montpellier | 817 | 1992 |
| 3 | [Inovéa](https://www.tamtam.ai/c/inovea) (inovea-group.com)<br>Provides financial education programs, wealth management solutions, and a national network of auditors and consultants for client satisfaction. | Financial Services | 🇫🇷 Mauguio | 652 | 2017 |
| 4 | [Biotope](https://www.tamtam.ai/c/biotope) (biotope.fr)<br>A leading French ecological engineering and nature conservation company with over 240 employees, 25 sites, operations in 40+ countries, and diverse services | Environmental Services | 🇫🇷 Mèze | 585 | 1993 |
| 5 | [Groupe PSI Sécurité](https://www.tamtam.ai/c/groupe-psi-securite) (psisecurite.fr)<br>With 24 years of experience, this company specializes in private security and safety services, offering a comprehensive range to become regional leaders | Security and Investigations | 🇫🇷 Montpellier | 181 | 1998 |
| 6 | [Acelys Services Numériques](https://www.tamtam.ai/c/acelys-services-numeriques) (acelys.fr)<br>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 |
| 7 | [AXIOME ASSOCIES](https://www.tamtam.ai/c/axiome-associes) (axiomeassocies.fr)<br>Regional accounting firm providing auditing, social management, wealth management, taxation, consulting, and IT engineering services to small and medium enterprise directors. | Accounting | 🇫🇷 Jacou | 151 | 1986 |
| 8 | [Dalkia Air Solutions](https://www.tamtam.ai/c/dalkia-air-solutions) (dalkiaairsolutions.fr)<br>Provides solutions for compressed air, nitrogen, and breathable air production, treatment, and networks, focusing on energy performance improvement for industrial and nuclear clients. | Industrial Machinery Manufacturing | 🇫🇷 Montpellier | 138 | 1981 |
| 9 | [Cerfrance Midi Méditerranée](https://www.tamtam.ai/c/cerfrance-midi-mediterranee) (midi-mediterranee.cerfrance.fr)<br>It is a cooperative network providing accounting and consulting services to various sectors, emphasizing human governance and client success. | Accounting | 🇫🇷 Lattes | 136 | 1960 |
| 10 | [Groupe ISIA](https://www.tamtam.ai/c/groupe-isia) (groupe-isia.com)<br>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 |
| 11 | [Digit RE group](https://www.tamtam.ai/c/digit-re-group) (digitregroup.com)<br>Administrative and back office functions for real estate brands under LFPI and Artémis, including training and property services. | Real Estate | 🇫🇷 Castelnau-le-Lez | 106 | 2016 |
| 12 | [SORECO](https://www.tamtam.ai/c/soreco-montpellier) (groupesoreco.fr)<br>Specialized payroll and HR consulting for the transport sector, focusing on social charge savings, GDPR compliance, and TICPE reimbursement across France. | Human Resources Services | 🇫🇷 Montpellier | 81 | 1992 |
| 13 | [VIGIPHARM](https://www.tamtam.ai/c/vigipharm) (vigipharm.fr)<br>Specializing in health monitoring like pharmacovigilance, the company offers strategy development and surveillance services for pharmaceutical labs, founded in 1998 by Caroline Navarre | Pharmaceutical Manufacturing | 🇫🇷 Montpellier | 72 | 1998 |
| 14 | [Proxiel](https://www.tamtam.ai/c/proxiel) (proxiel.com)<br>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 |
| 15 | [Dimo Diagnostic](https://www.tamtam.ai/c/dimo-diagnostic) (dimo-diagnostic.net)<br>DIMO Diagnostic specializes in certified real estate diagnostics for individuals and professionals, focusing on customer satisfaction through human-centered service delivery | Research Services | 🇫🇷 Montpellier | 60 | 2016 |
| 16 | [STEAM France](https://www.tamtam.ai/c/steam-france) (steam.fr)<br>Provides equipment, maintenance, software, and consultancy services for hygiene, washing, decontamination, and sterilization processes with personalized support. | Medical Equipment Manufacturing | 🇫🇷 Montpellier | 60 | 1999 |
| 17 | [Office Notarial de Baillargues ONB](https://www.tamtam.ai/c/office-notarial-de-baillargues-onb) (onb-france.com)<br>A multidisciplinary Notary Firm with over seventy employees, focusing on customer needs, quality services, innovation, and staff well-being | Real Estate | 🇫🇷 Baillargues | 50 | 1971 |
| 18 | [Primum Non Nocere](https://www.tamtam.ai/c/primum-non-nocere) (agenceprimum.fr)<br>Support organizations in reducing environmental, social, and societal impacts through personalized solutions including RSE/RSO diagnostics, carbon audits, and eco-design. | Environmental Services | 🇫🇷 Béziers | 46 | 2009 |
| 19 | [ROYER ROBIN Associés](https://www.tamtam.ai/c/royer-robin-associes) (royerrobin.com)<br>Since 1995, this company provides tailored solutions in consulting, auditing, and training to improve individual and collective performance across various sectors and structures | Higher Education | 🇫🇷 Lattes | 44 | 1995 |
| 20 | [Groupe DMM](https://www.tamtam.ai/c/groupe-dmm) (groupedmm.com)<br>Develops human skills through tailor-made training programs and support initiatives for executives, managers, and employees to tackle professional challenges. | Professional Training and Coaching | 🇫🇷 Saint-Aunès | 43 | 1994 |
| 21 | [IPSIP Group](https://www.tamtam.ai/c/ipsip-group) (ipsip.eu)<br>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 |
| 22 | [Partnear.](https://www.tamtam.ai/c/partnear) (partnear.fr)<br>A team of Audit, Consulting, and Accounting experts in Montpellier and Clermont l'Hérault, supporting ambitious entrepreneurs in achieving their projects | Accounting | 🇫🇷 Montferrier-sur-Lez | 24 | 1995 |
| 23 | [Numalis](https://www.tamtam.ai/c/numalis) (numalis.com)<br>Numalis develops tools and ISO standards to enhance AI adoption by designing robust and explainable algorithms, particularly for safety-critical industries like transportation and healthcare | Software Development | 🇫🇷 Montpellier | 24 | 2015 |
| 24 | [P3G Ingénierie](https://www.tamtam.ai/c/p3g-ingenierie)<br>A multidisciplinary engineering firm specializing in building design and construction, with expertise in sustainable practices and renewable energy Collaborates with architects for shared projects | Construction | 🇫🇷 Montpellier | 20 | 1992 |
| 25 | [Arteba](https://www.tamtam.ai/c/arteba) (aplus-architecture.com)<br>Specializing in site management, Arteba provides coordination and project management services for public and private clients and architects since 1977 | Construction | 🇫🇷 Montpellier | 20 | 1977 |
| 26 | [SIPPRO - Solutions IP Protection](https://www.tamtam.ai/c/sippro-solutions-ip-protection) (sippro.fr)<br>Specializing in innovative IP security solutions, this French company offers a range of high-tech security software and hardware products, international projects, and expert team | Computer and Network Security | 🇫🇷 Mudaison | 19 | 2011 |
| 27 | [Egalité à la page](https://www.tamtam.ai/c/egalite-a-la-page) (egalitealapage.com)<br>Consulting and training firm specialized in supporting professionals involved in victim support and handling workplace violence situations through strategic advice and process implementation | Business Consulting and Services | 🇫🇷 Montpellier | 19 | 2016 |
| 28 | [CVH - Compétences et Valorisation de l'Humain](https://www.tamtam.ai/c/cvh-competences-et-valorisation-de-l-humain) (cvh34.com)<br>CVH offers personalized HR solutions including recruitment, HR consulting, career transition, skills assessment, and training, with a focus on individualized support | Professional Training and Coaching | 🇫🇷 Montpellier | 18 | 2005 |
| 29 | [THEIS 360 AVOCATS](https://www.tamtam.ai/c/theis-360-avocats) (theis360.fr)<br>Legal support for healthcare professionals and business owners in structuring their practices, risk management, conflict resolution, and patient/customer disputes | Law Practice | 🇫🇷 Castelnau-le-Lez | 17 | 2012 |
| 30 | [OVERSYS](https://www.tamtam.ai/c/oversys) (oversys.com)<br>Established in 1994, this company offers top-notch translation and localization services for technical documents, software, and hardware for various industries | Translation & Localization | 🇫🇷 Le Crès | 16 | 1994 |

## 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)
- [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)
- [IT services companies in the Hérault department](https://www.tamtam.ai/l/it-services-companies-herault) (53)
- [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

- [Professional services firms in France](https://www.tamtam.ai/l/professional-services-firms-france) (6,611)
- [Professional services firms in Île-de-France](https://www.tamtam.ai/l/professional-services-firms-ile-de-france) (3,377)
- [Professional services firms in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/professional-services-firms-auvergne-rhone-alpes) (711)
- [Professional services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/professional-services-firms-hauts-de-seine) (629)
- [Professional services firms in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/professional-services-firms-provence-alpes-cote-dazur) (433)
- [Professional services firms in the Rhône department](https://www.tamtam.ai/l/professional-services-firms-rhone) (400)
- [Professional services firms in Occitanie](https://www.tamtam.ai/l/professional-services-firms-occitanie) (399)
- [Professional services firms in Grand Est](https://www.tamtam.ai/l/professional-services-firms-grand-est) (316)
- [Professional services firms in Nouvelle-Aquitaine](https://www.tamtam.ai/l/professional-services-firms-nouvelle-aquitaine) (308)
- [Professional services firms in Hauts-de-France](https://www.tamtam.ai/l/professional-services-firms-hauts-de-france) (260)
- [Professional services firms in Pays de la Loire](https://www.tamtam.ai/l/professional-services-firms-pays-de-la-loire) (254)
- [Professional services firms in the Bouches-du-Rhône department](https://www.tamtam.ai/l/professional-services-firms-bouches-du-rhone) (249)
- [Professional services firms in the Haute-Garonne department](https://www.tamtam.ai/l/professional-services-firms-haute-garonne) (208)
- [Professional services firms in the Nord department](https://www.tamtam.ai/l/professional-services-firms-nord) (178)
- [Professional services firms in Brittany](https://www.tamtam.ai/l/professional-services-firms-brittany) (167)
- [Professional services firms in the Loire-Atlantique department](https://www.tamtam.ai/l/professional-services-firms-loire-atlantique) (158)
- [Professional services firms in the Gironde department](https://www.tamtam.ai/l/professional-services-firms-gironde) (151)
- [Professional services firms in Normandy](https://www.tamtam.ai/l/professional-services-firms-normandy) (114)
- [Professional services firms in the Yvelines department](https://www.tamtam.ai/l/professional-services-firms-yvelines) (108)
- [Professional services firms in Paris](https://www.tamtam.ai/l/professional-services-firms-paris) (2,241)
- [Professional services firms in Lyon](https://www.tamtam.ai/l/professional-services-firms-lyon) (265)
- [Professional services firms in Toulouse](https://www.tamtam.ai/l/professional-services-firms-toulouse) (139)
- [Professional services firms in Marseille](https://www.tamtam.ai/l/professional-services-firms-marseille) (123)
- [Professional services firms in Boulogne-Billancourt](https://www.tamtam.ai/l/professional-services-firms-boulogne-billancourt) (102)

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Source: https://www.tamtam.ai/l/professional-services-firms-herault