Pays	Rang	Nom	URL	Prix	Features	Tech Stack	Leviers Psychologiques
FR	1	Axome — Agence E-commerce Shopify Platinum Partner	https://www.axome.com/	N/A	Shopify & Shopify B2B development; Branding & UX/UI Design; Content factory & automated catalogs; CRM & Klaviyo marketing automation; Performance CRO & conversion optimization	Webflow	Autorité ("Shopify Platinum Partner"); Preuve sociale ("20 ans d'expertise", "90 experts certifiés"); Preuve sociale ("Payot.com, Kusmi Tea, Devred" case studies)
FR	2	W3lead — Agence Shopify & Shopify Plus Certifiée Paris	https://www.w3lead.com/	N/A	Conseil & Stratégie (Audit, Conception d'interface); Design UX/UI (Direction Artistique, Research); Développement web (Migration Shopify, Web performance); Optimisation & Marketing (Tracking, CRO); Intégration Shopify & Klaviyo	Shopify	Autorité ("Shopify Plus Partner", "Klaviyo Platinum Partner"); Preuve sociale ("Jennyfer, Vanessa Bruno, Beauté Privée, Qwetch, Easy Clothes, Toulemonde Bochart"); Ancrage ("Agence e-commerce depuis 2013", "11 années d'expérience")
FR	3	Ultrō — Shopify agency	https://ultro.fr/en/solutions/shopify-agency	10-15k€ / 20-40k€ / Sur devis	Technical Audit; Performance Optimization; Migration to Shopify and Shopify Plus; Custom Theme Design; Shopify Headless Architecture	Webflow	Autorité ("official Shopify agency", "Shopify Partner"); Preuve sociale ("Sortlist 4.9/5 - 26 reviews", "brands emblématiques", "volumes millions euros"); Ancrage ("depuis 2009", "early adoption 2014")
FR	4	Stellar Projects — Headless Commerce with Shopify (article)	https://stellarprojects.fr/en/pages/agence-shopify-quoi-headless-commerce-comment-implementer	N/A	Définition headless architecture (front/back découplés); Storefront API integration (produits/panier/paiement); Frameworks supportés (React, Vue.js, Angular); Hosting front Vercel/Netlify; Tests performance + UX + intégrité données	Shopify	Autorité ("co-fondateur Stellar Projects depuis 2018", "co-auteur livre Créer sa marque à l'ère de l'IA 2026"); Réciprocité ("consultation gratuite 30 minutes avec experts"); Preuve sociale (marques cofondées Cabania, Superbon, WeLoveBeauty)
US	1	Flux Agency — Headless Shopify Plus (Hydrogen & Sanity)	https://flux.agency/services/headless-shopify	$80K+ (start)	Hydrogen + Oxygen frontend (React, SSR, edge); Sanity CMS setup + content modelling; Algolia search integration; Third-party integrations (Klaviyo, Gorgias, Yotpo, ERP, 3PL); Performance optimisation + ongoing support retainers	Webflow	Autorité ("building headless storefronts since before Hydrogen existed", "primary build architecture for Shopify Plus brands"); Preuve sociale (case studies ROC Boots, Quad Lock, MiGoals, Byron Bay Cookie); Réciprocité ("We'll tell you straight if a well-built Shopify theme would serve you better")
US	2	Ask Phill — Shopify Headless: When It's Worth It and What It Actually Costs	https://askphill.com/blogs/blog/shopify-headless	$100K / $150-350K / $350-600K	200+ Shopify migrations proving when headless is justified; 3x speed gains demonstrated on Denham case; Hydrogen framework integration; Contentful & Sanity CMS implementation; Multi-region builds with custom product configurators	Shopify + Hydrogen	Autorité ("After 200+ Shopify migrations", "Shopify Platinum Partner"); Preuve sociale ("Denham 3x faster", "Veloretti 80+ Lighthouse"); Réciprocité ("30-minute technical assessment", "Book a consultation")
US	3	1Center — Top Shopify Headless Development Agency	https://www.1center.co/headless-shopify-commerce-development-agency/	N/A	Shopify Hydrogen Custom Storefront Design; Shopify Oxygen Speed Optimization; Headless CMS Integration; Shopify API Development & Integrations; Performance Optimization and Consulting	React + Shopify + Shopify Hydrogen + Shopify Oxygen	Urgence ("Blazing-Fast Performance keeps customers happy"); Rareté ("Create a unique Custom Shopify storefront"); Preuve sociale ("380+ Full-time Experts", "Deep Shopify Expertise Since 2010")