All GatsbyJS Development Firms in France
Digital Unicorn
4.9(36 reviews)Web Development & Mobile Application Agency | SaaS & AI Software
Highly recommendedTop awardedDigital Unicorn is a custom development agency founded in 2018: web sites and platforms (React, Vue, Node, Laravel, Symfony), mobile applications (Flutter, React Native, native Swift and Kotlin) and AI integration (agents, RAG). In-house production, salaried teams managed from Paris. Over 350 projects published in our portfolio, including the e-learning platform Apolearn and the insurtech AssurDeal; over 30 applications ranked in the top 10 of the stores, including 20 number 1 in France. Free technical review before any commitment, quote within 48 hours, code ownership guaranteed to the client. Our services Custom web development · Web applications · Mobile applications · UI/UX Design · AI integration · Business software (SaaS, ERP, CRM) A recognized agency in France Codeur.com ranks Digital Unicorn #1 in its selection of mobile application development agencies. In 2026, LePetitJournal places it at the top of its Parisian selection and La Fabrique du Net #1 of mobile application agencies in Paris. The agency is also ranked at the top of selections published by Le Point for mobile and Monaco Tribune for web development. Referenced Activateur France Num and approved CII (Innovation Tax Credit) by the Ministry of Research since July 2025. Web, mobile, software, SaaS & AI Digital Unicorn designs web applications, SaaS platforms, business software, CRM/ERP, marketplaces, APIs and cloud solutions, as well as iOS and Android mobile applications. Our teams cover the entire cycle: product strategy, UX/UI, architecture, front-end/back-end development, generative AI, AI agents, RAG, testing, deployment and maintenance. Digital Unicorn supports startups, SMEs, mid-sized companies and large corporations in France and internationally.Looking for work in GatsbyJS DevelopmentLocated in Paris, France (+1)From €1,000 for GatsbyJS DevelopmentWorked in Real Estate (+33)Speaks French, English(+2)51-200 membersSEREVIA
5(10 reviews)The digital agency that transforms your ideas into sustainable solutions at the best cost.
Sérévia is a digital agency founded in 2010, specializing in the design and development of tailor-made solutions: web applications, SaaS platforms, mobile apps, and projects integrating artificial intelligence. We support SMEs, startups, and institutions in all phases of their project: from ideation to production, with an agile, structured, and results-oriented approach. Our strength: a senior team, rigorous project management, and the ability to deliver quickly and well, without ever sacrificing quality. We develop scalable, sustainable solutions adapted to your business, in a long-term partnership logic. Key expertise: • Web & mobile development (Flutter, React, .NET, Node.js) • Custom business platforms • Health applications (AI, mobile ...) • Generative AI (RAG, assistants, AI audits) • Electronic invoicing (PDP, PEPPOL, compliance) • UX/UI, product design, and agile support • HDS application hosting 📅 Let's discuss your project: calendly.com/serevia/30min 🌐 More info: https://serevia.comLooking for work in GatsbyJS DevelopmentLocated in Osmoy, FranceFrom €10,000 for GatsbyJS DevelopmentWorked in Travel & Leisure (+6)Speaks French11-50 membersWeb Studios
5(51 reviews)Web Studios - Your partner in digital strategy and performance
RecommendedTop awarded600 clients • 750 projects • 11 experts • Paris Dreux • 5/5 client satisfaction Since 2009, Web Studios has been supporting companies and organizations in the creation, redesign, and optimization of their digital ecosystem. Based in Dreux and Paris , our agency brings together 11 experts in strategy , UX/UI design, web development, e-commerce, SEO, SEA, content, and data analysis. ## Our objective To design digital solutions capable of: • strengthening your visibility; • attracting qualified traffic; • improving user experience; • converting more visitors into leads or customers. ## Our expertise Strategy and positioning Analysis of target audiences, value proposition, business objectives, and user journeys. Website creation and redesign Showcase sites, e-commerce, business platforms, and high-performance, secure, scalable, and mobile-friendly applications. UX and CRO Analysis of behaviors, friction points, forms, and calls to action to sustainably improve conversion rates. Content and acquisition Web writing, video, SEO, Google Ads, social media, landing pages, and remarketing. Management and support Audits, conversion tracking, dashboards, prioritized action plans, and team training. Our conviction A website should not only be aesthetically pleasing or visible. It must quickly convey the offer, build trust, and facilitate action. --- ## Contact Web Studios Paris: 01 88 33 95 50 Dreux: 02 46 83 03 72 contact@web-studios.fr https://www.web-studios.fr --- ## Follow us Facebook: https://www.facebook.com/Web.Studios.fr LinkedIn: https://www.linkedin.com/company/agence-web-studios/ Instagram: https://www.instagram.com/webstudios.fr YouTube: https://www.youtube.com/@webstudiosfr TikTok: https://www.tiktok.com/@agence_webstudios --- ## Discover our agency in video https://youtu.be/R8ngduenXj4Looking for work in GatsbyJS DevelopmentLocated in Paris, France (+1)From €100 for GatsbyJS DevelopmentWorked in Sports (+34)Speaks French, English11-50 membersYield Studio
5(23 reviews)Tech, Product, and AI partner for your complex business apps & software | +150 clients
RecommendedTop awardedAt Yield Studio, we help companies become more productive and identify growth levers. Frustrated with working on projects with no real impact, James and Cyrille created Yield Studio in 2019. Objective: to use tech to create innovations that bring value to both the end-user and the business. Our business: designing and developing web & mobile applications. Our clients: we work with mid-sized companies (ETI), SMEs, and startups: Suzuki, Carrefour, BPI France, BTP Consultants, Aprium Pharmacie, République Française, Crédit Agricole, Orange, Axecibles. The pillars of our success: - We identify differentiating features for end-users through an approach based on both Discovery and Delivery. - We write quality code from the start to go faster afterwards thanks to internal and senior experts - We don't waste time on low value-added tasks thanks to our internal Lab’ which provides our experts with powerful tools. - More of a partnership than a service… People first 💙Looking for work in GatsbyJS DevelopmentLocated in Paris, France (+1)From €1,000 for GatsbyJS DevelopmentWorked in Accounting (+18)Speaks French11-50 membersBig Boss Studio
4.7(55 reviews)Artisans of the (in)visible
Highly recommendedTop awardedWe ensure the balance between the aesthetic and technological worlds to bring your digital projects from the shadows into the light. Aware that what we see is only part of the iceberg, we put as much effort into development as into creation. Independent since our creation in 2008, we aim to live and enable useful digital experiences. We aim to place technical, environmental, and societal performance at the heart of all projects. #1 - An Entire Digital Agency People First, Truly We are 29, all on permanent contracts in France, with respected parity, having our say in our schedules and projects. 41% of the team has been with us for over 5 years. From Meeting to Production We strive to master all stages of each project, whether together or separately. And we give you just as much attention, from brief to maintenance, whatever your challenge. Curiosity We work with exciting, constantly evolving materials. That's why we stay informed and train ourselves on new tools and technologies. Expertise & Trust Today, 70% of us have over 10 years of experience in our field. And over 36 clients continue to trust us daily. #2 - Enhancing the Visible by Working on the Invisible. Technologies and Development Structural Technologies (backend / architecture) Creative Technologies (frontend) Interaction Technologies (omnichannel / in-store / DTS / Street / OOH) Artificial Intelligence Gaming Technology Tracking & SEO Design and Creation Design (UX design / UX research) Interaction Design and Creation (Design systems / UI) Visual Identity designed for digital 3D FOOH / Motion / XR-AR... Project Management Performance Expertise (RGESN / RGAA / RGPD / cybersecurity / SEO) Production of websites, pages, apps, and business tools Ongoing Maintenance (TMA / TMC / TME) Strategy Audits and Recommendations Methodological Design (including design thinking and Google sprints) Strategic and Creative Planning Content Strategy #3 - Mastery Arises from Diversity Websites for Balenciaga, CARE France, CCI Nice, Chanel, Savencia, Sécurité Routière, WiZiU... Mobile Applications for Musée Jacquemart André, Octopus energy, Parc Astérix... Custom business tools for Babcock, ACE éducation, Fountaine Pajot, Qpark... Digital experiences (Gaming, Longreads, Drive to Store, 3D, FOOH, Motion Design, XR-AR) for Carel Paris, Coty, Kering, Lacoste, Lancaster, Messika... Maintenance (TMA / TMC / TME) for Barilla, Bridelice, Harrys, Santé publique France... #4 - We are accustomed to working with demanding sectors Luxury, Perfume & Beauty, Jewelry Food & Agri-food Institutional; Metropolises & Collectivities Hospitality & Catering City Stakeholders Culture & Leisure See you soon!Looking for work in GatsbyJS DevelopmentLocated in Paris, France (+1)From €1,000 for GatsbyJS DevelopmentWorked in Beauty (+28)Speaks French, English11-50 membersLoop
5(2 reviews)Get in the loop!
Loop est une société spécialisée dans le développement d'application mobile, de web app, de logiciel et jeux vidéos. Nous avons créer cette nouvelle structure pour répondre à la demande grandissante de nos clients sur des besoins spécialisés. Nous avons de belles expériences dans le développement de solutions sur-mesures dans les domaines du BTP, des télécommunications, de l'aérospatial et pour le gouvernement. Notre équipe jeune et dynamique vous invite à discuter de votre projet autour d'un café ou d'un babyfoot !Looking for work in GatsbyJS DevelopmentLocated in Nice, FranceFrom €3,000 for GatsbyJS DevelopmentWorked in Software & Computer Services (+3)Speaks English, French(+1)1-10 membersSnack Groupe
4.9(10 reviews)Cultivate your digital growth
RecommendedSnack Groupe – Tailor-Made Digital Transformation 🚀 At Snack Groupe, every project is unique. We support you in strengthening your online presence, creating immersive experiences, and enhancing your brand with lasting digital solutions. 🎯 Do you have a vision for your brand? We make it a reality. 🌈 We design tailor-made solutions that tell your story, engage your audience, and accelerate your growth: 🌐 High-performance Websites & Applications Custom platforms, combining design and efficiency, to captivate and retain your users. 🔍 SEO & Targeted Advertising Optimized strategies to maximize your visibility and reach your audience at the right time. 🌌 AR/VR & Interactive Experiences Immersive worlds to train, entertain, and leave a lasting impression using the latest technologies. 🎥 Impactful Videos Powerful visual content to capture attention and enhance your image across all channels. Snack Groupe is above all a passionate team 🎉 We are your creative and technological partners, committed alongside you with: ✨ Transparency ✨ Responsiveness ✨ Creativity ✨ Listening Ready to level up? 🌟 With Snack Groupe, bring your ideas to life and build your digital success starting today.Looking for work in GatsbyJS DevelopmentLocated in Paris, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Sports (+14)Speaks English, French11-50 membersWizz You
4.9(55 reviews)The web agency that makes your ideas take off. ✨
RecommendedTop awardedWizz You , a web agency in Toulouse. We support companies all over France. You are comparing several agencies, so let's get straight to the point. With us, you have a single point of contact from the beginning to the end of the project. No need to repeat the same information to three different people. You always know who to contact and where your project stands. We mainly work with SMEs, retailers, and entrepreneurs who are looking for simple answers, met deadlines, and long-term support. What we do Showcase websites, e-commerce stores, custom platforms, iOS and Android mobile applications, natural referencing, Google Ads campaigns, conversion-oriented design, and solutions based on artificial intelligence when it brings real value. Our way of working It all starts with a conversation. We take the time to understand your business, your objectives, and your constraints before proposing a solution. Then, we provide a detailed quote, with a clear budget, defined deadlines, and no hidden costs. Why our clients stay Because we don't try to sell unnecessary services. Because we remain available after launch. And because we sometimes say that an idea is not the right solution when we think we can save you time or money. Based in Toulouse, we work with companies throughout France. The first discussion is free and without obligation. At worst, you leave with some useful advice. At best, we launch your project together.Looking for work in GatsbyJS DevelopmentLocated in Toulouse, FranceFrom €1 for GatsbyJS DevelopmentWorked in Industrial Goods & Services (+32)Speaks French, English(+1)11-50 membersPickbeam
5(16 reviews)Websites & apps for your business
Top awardedOur observation: 90% of websites and digital tools lose money for their company. SMEs are not always properly advised. The solutions offered to them lack flexibility and quickly become obsolete. They then find themselves with: - slow & dysfunctional solutions - not adapted to their needs or their users - not secure enough. - difficulty increasing their turnover Our difference: We want to become the preferred web advisor for business leaders. Our experience and know-how, combined with their vision and expertise in their field, allow us to create the best solutions for their company together. We rely on several modern web technologies to select those that best match their specific needs. These ultra-flexible solutions allow for easy evolution over time. The investment is for the longer term and customizable to constantly adapt to the market. At Pickbeam, we bring business ideas to life as digital tools to optimize their productivity and growth. Our business: Design and develop custom websites and management tools. Our clients: We work with SMEs: Such as: Groupe Peyrot, Limougeotte, Maison M, France Numérisation and École internationale de boulangerie. Our preferred topics: - Website creation - Web application creation - Design Sprint - Jamstack Architecture - Progressive Web Apps (PWA) - Headless CMS - Headless E-commerce - SEOLooking for work in GatsbyJS DevelopmentLocated in Toulouse, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Real Estate (+13)Speaks English, French11-50 membersCC's Global
5(2 reviews)Custom websites engineered to turn your visitors into clients.
RecommendedYour website is your best salesperson but only if it's built to convert. CC's Global designs and develops custom websites engineered to perform from the first click: every layout decision, loading speed, and UX detail is calibrated to turn visitors into real clients. My approach combines strategic UX/UI design, high-performance development, and native technical SEO built in from day one, not bolted on afterward. Every project includes measurable deliverables: Core Web Vitals optimization, GA4 tracking, Search Console & Tag Manager setup. Services: - Custom business & portfolio websites - High-converting landing pages - E-commerce development - Website redesign & performance optimization - Technical SEO & Core Web Vitals - Ongoing maintenance, updates & SaaS integrations One point of contact from brief to launch. Clear deliverables, transparent process, measurable outcomes.Looking for work in GatsbyJS DevelopmentLocated in Paris, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Construction (+9)Speaks French1-10 memberstheTribe
5(6 reviews)Strategic consulting and technical expertise to create custom digital solutions
OUR MISSION We support entrepreneurs and tech decision-makers in innovating and succeeding with their product(s) by having a strong impact on their end-users. We are involved in the entire product development cycle: digital strategy, user research, design, development, deployment, and application maintenance and evolution. Our approach is based on 3 pillars: 1/ Understanding your business and operational challenges Each collaboration is based on the need to solve business problems and create value for your activity. This impact-driven approach is at the core of our value proposition. 2/ Designing intuitive and elegant applications We place great importance on UX and UI to reconcile design and efficiency. 3/ Developing on solid foundations The product code must be maintainable & tested, and use the latest versions of the most performant open-source technologies. OUR EXPERTISE Developing new products is our core business. We undertake 3 types of missions: 1. Identify growth opportunities Our teams work alongside you to identify projects that will enable you to secure your growth drivers, and by carrying them out with you to ensure return on investment. 2. Design & develop the right products Our teams work for the success of your projects, either by taking charge of your product's realization from design to deployment, or by reinforcing your teams to provide the expertise that will improve the efficiency of your production. 3. Support your organization's growth Our experts work with your product and tech teams to enable your organization and your IS to grow effectively (methodology, HR organization, support in hunting for missing talents, training, audit, and identification of scalability levers).Looking for work in GatsbyJS DevelopmentLocated in Nantes, FranceFrom €3,000 for GatsbyJS DevelopmentWorked in Industrial Goods & Services (+8)Speaks French, English51-200 membersMERLORIAL
5(18 reviews)Créons ensemble l’étincelle digitale
Highly recommendedNous sommes MERLORIAL, une agence web et marketing digital animée par la passion de créer, d’innover et de faire grandir les marques. Notre mission : aider les entreprises à se démarquer, à attirer les bons clients et à transformer leur présence en ligne en véritable moteur de croissance. Nous concevons des sites web modernes, performants et uniques — qu’il s’agisse de vitrines, de boutiques e-commerce ou de plateformes sur mesure — tout en mettant en place des stratégies digitales complètes : SEO, publicité en ligne (Google Ads, Meta, TikTok), branding, et gestion des réseaux sociaux. Derrière chaque projet, il y a avant tout une collaboration humaine. On prend le temps d’écouter, de comprendre votre vision et de traduire vos idées en actions concrètes et mesurables. Notre objectif : faire grandir votre marque, pas seulement votre site web. Avec MERLORIAL, vous avancez avec une équipe engagée, créative et orientée résultats.Looking for work in GatsbyJS DevelopmentLocated in Lyon, FranceFrom €300 for GatsbyJS DevelopmentWorked in Others (+6)Speaks French1-10 membersWebSentinel – Agence Web & E-commerce (SEO & Performance)
(0 review)Sites web & e-commerce performants conçus pour convertir et générer du chiffre
WebSentinel est une agence web spécialisée dans la création de sites performants et orientés conversion. Nous accompagnons les entreprises dans la conception de sites WordPress, PrestaShop et solutions sur mesure, avec une approche centrée sur la performance, le SEO et l’acquisition client. Notre objectif est simple : transformer votre site en véritable outil commercial, capable de générer des prospects et des ventes de manière continue. Nous intervenons sur : Création de sites vitrines et e-commerce Optimisation SEO technique et locale Refonte de sites existants Optimisation des performances et du taux de conversion Maintenance et évolution continue Chaque projet est pensé pour être rapide, propre, scalable et orienté résultats.Looking for work in GatsbyJS DevelopmentLocated in Haubourdin, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Construction (+3)Speaks French1-10 membersKlaapp
5(1 review)The high standards of a software publisher for your most ambitious Web & Mobile products.
At Klaapp, we refuse to compromise between Product Analysis, Technical Excellence, and User Experience. We are not just an execution agency. We are a studio born from a Software Publisher culture. We design, develop, and operate our own software solutions daily. This real-world experience drives our obsession: delivering Production-Ready products built to last and scale.Looking for work in GatsbyJS DevelopmentLocated in Paris, FranceFrom €5,000 for GatsbyJS DevelopmentWorked in Automotive (+1)Speaks English, French1-10 membersAddictic
(0 review)Créez. Innovez. Communiquez.
Addictic, agence de communication digitale implantée à Tours , vous accompagne de la définition de votre stratégie digitale jusqu'à la création de vos supports. Communiquer, développer sa notoriété ou disposer d’outils numériques adaptés à ses besoins... L’agence met à la disposition de ses clients une équipe de passionnés des nouvelles technologies possédant un large panel de compétences en conception, ergonomie, graphisme et technologie. L’agence apporte des solutions sur-mesure innovantes et aide ses clients à mieux appréhender ses outils pour développer sereinement leur activité.Looking for work in GatsbyJS DevelopmentLocated in Tours, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Energy & Oil (+12)Speaks French1-10 membersKREATIV KONCEPTION
(0 review)Modern, fast digital solutions designed to perform
We don't just deliver a project. We create complete digital experiences : e-commerce platforms, mobile apps, web apps, and custom solutions. At Kreativ Konception, every solution is designed with a user-first approach, optimized for performance, and built to generate real impact on your business. From prototype to launch, we build scalable solutions ready to evolve with your growth. Fewer technical constraints, more concrete results.Looking for work in GatsbyJS DevelopmentLocated in Paris, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Clothing & AccessoriesSpeaks English, French1-10 membersEliom
(0 review)An international digital strategy.
Eliom is a 360° consulting agency serving companies, communities, schools, and associations. We offer 100% tailor-made solutions adapted to your needs and budget. Our team of experts crafts unique strategies to meet the challenges of your business and increase your revenue. We combine creativity, boldness, and experience to achieve your goals. Our agency's main mission is to put people at the heart of our collaborations. Our expertise: - 360° digital strategy - Creation of showcase, catalog, e-commerce, one-page, and corporate websites - Creation of brand and company identity - Social media optimization - Communication strategy - Natural referencing (SEO) - Sponsored referencing and online advertising on social networks (SEM / SEA) - Emailing / Newsletter - Marketing - Design - Media strategy - Events - Digital transformation - Training in digital tools - Custom development - Hosting Want to increase your revenue, your visibility; improve or create your visual identity? Contact us, we are at your service.Looking for work in GatsbyJS DevelopmentLocated in Paris, FranceFrom €50 for GatsbyJS DevelopmentWorked in Technology Hardware & Equipment (+2)Speaks English, French(+5)11-50 membersZOKASTECH
(0 review)Innovate - conntect - grow
ZOKASTECH (short for Zone for Optimizing Key Algorithms and Systems Technology) is a French IT company founded in early 2023, headquartered in Billy‑Montigny, Hauts‑de‑France . Under the leadership of founder and CEO Zouhair Kasmi, ZOKASTECH operates with a lean and agile team of around 15 expert technologists Their core mission is to democratize artificial intelligence by delivering open‑source, cutting‑edge solutions designed to push the boundaries of what’s possible in AI development . The company positions itself at the intersection of innovation and real-world impact, transforming technological visions into tangible software products through solid strategic planning, agile processes, and technical excellence. ZOKASTECH provides a wide array of services, including: Custom software development and IT consulting, primarily focused on AI and algorithm optimization. Web and mobile application development. DevOps and infrastructure automation. Telecommunications services such as fiber optics deployment and broadband connectivity solutions (FTTH, FTTO, FTTB) Technologically, the team leverages modern stacks like Java 17, Angular 13, Docker, Kubernetes, in addition to AI frameworks like TensorFlow and Python, ensuring a robust and scalable foundation for product delivery ZOKASTECH’s approach is agile (Scrum-based), with tight collaboration among team members, iterative development cycles, and a strong emphasis on innovation, quality, and strategic foresightLooking for work in GatsbyJS DevelopmentLocated in Fouquières-lès-Lens, FranceFrom €1,000 for GatsbyJS DevelopmentWorked in Telecommunications (+3)Speaks English, French1-10 membersThe Road - Agence Digitale
4.9(30 reviews)Specialists in high-performance web and visibility on Google and AI
THE ROAD is a web agency based in Tunis, specializing in the creation of digital solutions designed to generate business, attract qualified prospects, and convert more visitors into customers. We are specialists, not generalists. Our expertise focuses on two complementary areas: web development and organic visibility. We design websites, custom web platforms, and business solutions that are fast, scalable, and results-oriented. Each project addresses a specific business objective: generating quote requests, bookings, sales, contact inquiries, or qualified opportunities. We work on strategy, UX/UI, messaging, calls to action, forms, speed, and user journey to reduce friction and increase conversion rates. Our expertise covers the creation of showcase websites, e-commerce sites, custom platforms, portals, and client areas, as well as redesign, performance optimization, maintenance, and hosting. We also integrate SEO from the design phase to position pages for high commercial intent searches. Architecture, content, structured data, internal linking, technical performance, and mobile compatibility are all considered to generate sustainable and qualified traffic. Through GEO, we also help companies to be better understood, cited, and recommended in the responses generated by Google, ChatGPT, Gemini, Claude, and other artificial intelligence engines. Based in Tunisia and organized as remote-first, THE ROAD supports companies in Europe, the Middle East, Africa, and internationally. We don't just deliver a website. We build a digital asset capable of sustainably supporting your growth.Looking for work in GatsbyJS DevelopmentLocated in Tunis, TunisiaFrom €500 for GatsbyJS DevelopmentWorked in Non-profit (+21)Speaks English, Arabic(+1)1-10 members