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OSSA: Open Source Software Assurance

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We support IT departments in the governance of their open source software catalog

Managing an open source software catalog requires a global vision, specific skills and privileged relationships with open source communities, which is why we created OSSA.

Open Source Software Assurance is above all a governance tool.

OSSA includes a number of tools and services to help CIOs make the best decisions regarding the use of Open Source Software in the enterprise.

Free software has the particularity of being developed by communities that are not very customer-oriented. The development of a software is often motivated by the philosophy of open source and by the freedom that "free" brings to bypass proprietary solutions by bringing an efficient and independent answer. We believe that this particularity should not be a brake to its adoption and expansion as the advantages are numerous (sovereignty, independence, cost, economic model).

Because of the very heterogeneous character of the "catalog" of free software available in terms of level of development, version tracking, exchanges with the community and compatibility with your computer system, it seemed fundamental to us to create an interface. This is why we created OSSA almost 20 years ago.

OSSA is a support and monitoring service for Open Source software catalogs. It is also a software life cycle monitoring service, and it is also a monitoring service that guides IT departments to make the best choices for the company's IT assets and users. OSSA is also an intellectual property service that contributes to open source software by donating all of its developments and bug fixes to the communities.

And of course, OSSA is an operational support service with different levels of commitment to ensure business continuity on your technical base.

To meet our commitments in a timely manner, we developed our own ticketing solution (SmartSLA) that our experience guided us to build.

+50 clients

EDF, Société Générale, BNP, Banque de France, La Banque Postale, La Poste, FDJ, L’Assurance Maladie, La CNAV.

+475 Software

Nous supportons plus de 475 logiciels différentes.

A team of 15 people

The service is provided by a multi-disciplinary team dedicated to support.

Expertise and contribution

Our contributors / OSSA experts regularly intervene in the source code of the most famous free software used by our major customers: LibreOffice, Samba, Fusion Inventory, LemonLDAP, OpenLDAP, and many others...

Our vision?

OSSA acts as an insurance policy that provides your team with 24/7 direct access to Tier 4 open source architects for any questions or issues.

LINAGORA OSSA covers a large list of leading open source packages, including Apache Web Server, CentOS Linux, Tomcat, Wildfly and the most innovative open source technologies, including Docker/Kubertenes, MongoDB, Node.js, ELK,

Contributing to the digital sovereignty of businesses

Supporting our customers' ability to innovate

Guaranteeing cost control through open source


Enabling companies to leverage open source in an industrial and secure manner.

Experts in all fields

Our architects are true experts in all areas, offering their skills and experience to optimize performance, perform system upgrades, conduct security and architectural reviews, conduct on-site training, and much more.

  • "With our "OSSA" service offering, we position ourselves as a trusted third party on more than 450 software products for industrialization, security and governance of open source."
    Michel-Marie MAUDET
    Chief Executive Officer
  • "Open source is a no-brainer for large public and private organizations. Open source is everywhere, including in the most critical enterprise systems and at the heart of major digital transformation projects."
    Nasreddine CHADI
    Director OSSA


You can help us in many ways!


Give us a call or drop by anytime, we endeavour to answer all enquiries within 24 hours on business days.

+33 (0)1 46 96 63 63

We are open from 9am — 6pm week days.