A tour, in eight families, of the technologies our teams work with every day — from infrastructure to front-end, all drawn from the open-source ecosystem.

1. Web languages

The foundation of our developments: proven languages, backed by active communities.

• PHP — the historic language of the web, at the heart of our CMS and business applications.
• Python — application development, APIs and data processing.
• JavaScript — interactivity in the browser as well as on the server.
• HTML5 & CSS3 — semantic, accessible and responsive interfaces.

2. Frameworks & application development

Back-end and front-end frameworks to build high-performing web and mobile applications.

• Django — our Python framework of choice for business platforms, with Django REST Framework for APIs.
• React — rich, composable web interfaces.
• Vue.js — a progressive, lightweight front-end.
• Node.js — server-side JavaScript services and tooling.
• Bootstrap — a UI library for consistent, responsive rendering.
• Flutter — cross-platform mobile applications for iOS and Android.

3. CMS & e-commerce

Editorial websites and online stores: we deploy and customise the market’s leading solutions.

• SPIP — the free CMS we have used and extended since our beginnings, including for this website.
• WordPress — the world’s most widely used CMS, for tailor-made editorial sites.
• PrestaShop — a complete, extensible e-commerce platform.

4. Business management

Open-source solutions to manage operations, customer relationships and IT assets.

• Odoo — a modular ERP: sales management, accounting, inventory.
• Dolibarr — a lightweight ERP/CRM for small businesses and non-profits.
• GLPI & FusionInventory — IT asset management, automated inventory and helpdesk.

5. Databases & search

From relational to document stores, all the way to instant search.

• PostgreSQL — the relational engine behind our critical business platforms.
• MariaDB & MySQL — the web ecosystem’s reference relational databases.
• MongoDB — a NoSQL document database for flexible data.
• Typesense — a typo-tolerant, instant search engine.

6. Systems & infrastructure

Our platforms rest on free and open foundations.

• Debian GNU/Linux — the reference distribution for our servers, stable and predictable.
• Nginx — a high-performance web server and reverse proxy.
• Proxmox VE — virtualisation and high availability for our infrastructures.
• Docker — application containerisation for reproducible deployments.

7. Network & security

Open-source firewalls and routing to protect our clients’ infrastructures.

• pfSense — the reference open-source firewall and router.
• OPNsense — filtering, VPN and network monitoring.

8. Tooling & industrialisation

Our software production chain is industrialised from end to end.

• Git & GitLab — code versioning, review and continuous integration (CI/CD).
• npm — JavaScript dependency management.
• Ansible — automated deployment and server configuration.
• Matomo — privacy-friendly audience analytics, hosted on our own servers.