On March 26, 2026, the inaugural Ecommerce Open Source Summit (EO2S) takes over Le Nida in Issy-les-Moulineaux for a full day of conferences, technical deep dives, and networking — all dedicated to open source ecommerce.

EO2SParis2026

Organized by Friends of Presta, this event, formerly known as FOP Days, has a new name to match a bigger scope: bringing together open source ecommerce professionals from across Europe — powered by France’s thriving open source ecommerce scene — under one roof.

And for the first time since the acquisition of PrestaShop by cyber_Pixel earlier this year, PrestaShop and Sylius representatives will be together on the same stage — a moment you don’t want to miss.

🤝 About Friends of Presta

EO2S is organized by Friends of Presta, a French non-profit association that brings together developers, integrators, agencies, and other professionals from the PrestaShop ecosystem. Founded in 2021, the association has grown into a key network of technical experts, operating independently and collaborating on projects ranging from security advisories to module development. Friends of Presta is also behind major community events — including the former FOP Days, now reborn as EO2S. With a thriving Slack community of over 1,000 members, it’s a driving force for open source collaboration and mutual support among PrestaShop professionals.

🎤 What to expect

  • Keynote: “European open source ecommerce takes back the lead” — with Olivier Binet (Managing Director, PrestaShop), Christophe Vidal (President, Friends of Presta) and Thomas Rayrat (Vice President, Friends of Presta), including the exclusive reveal of the first-ever CMS Ecommerce Barometer in France.
  • “PrestaShop and its community: a model taking shape” — Paule Morizot (Head of Product, PrestaShop) joined by other contributors for a hands-on look at the Call for Contribution program, one year in.
  • “E-invoicing: finally understanding the stakes and taking action” — a roundtable led by Marie-Sophie Cuinet (VP Category Management, PrestaShop) with Atoo Next and OpenSI.
  • Closing keynote by Mikołaj Król, CEO of PrestaShop and Sylius — expect a forward-looking vision for the open source ecommerce ecosystem.

… and 17+ sessions covering community contributions, digital sovereignty, AI in ecommerce, and more.

📍 Practical info

  • Date: March 26, 2026
  • Location: Le Nida, Issy-les-Moulineaux (Paris area)
  • Audience: developers, agencies, merchants and ecommerce professionals

🔗 Register now

👉 Secure your spot at EO2S 2026

Come meet us at the PrestaShop booth — we’ll be there to chat and connect. See you on March 26!