User Experience (UX/UI) Agencies in Rennes

Kwantic: Your trusted digital partner.

8 seconds...

That's all the time you have to capture your customers' attention online. And that's exactly what you'll need to understand why Kwantic is the partner you're looking for.

Why? Because we are convinced that a successful digital project is more than just technology. It's an alliance between captivating design, high-performance technologies, and exemplary responsiveness.

With a team of over 30 passionate experts, we have already delivered more than 100 successful projects, meeting the specific needs of marketing, communication, digital & e-commerce departments, IT departments, and CTOs.

We offer a complete range of services to support your digital transformation:

• Design and development of showcase and e-commerce websites
• Website redesign and migration
• UX/UI Design
• Development of website factories
• Web and mobile applications
• High-performance SEO strategy
• SEA and Meta Ads
• Social Media Management
• Inbound and Outbound Marketing
• Optimization, tracking, CRO, and data analysis

What makes the difference:

• Guaranteed responsiveness: A response within 4 hours, because every minute counts
• Solid certifications: RGAA, Crédit Impôt Innovation, Eco-Design, Webperformance 2.0
• Unique approach: A blend of creativity, data, and science for measurable results
• Trust Kwantic to bring your ideas to life and boost your growth. Contact us today to discover how we can help you achieve your goals.

The entire Kwantic team looks forward to discovering your project!

Contact us today and let's see how we can accelerate your results.

LE BACKYARD est une agence d’innovation digitale qui intervient à un niveau stratégique pour créer et optimiser des outils digitaux performants à travers une conception centrée utilisateur. Notre agence est située à Paris 11ème, et notre équipe est composée de 30+ experts (UX et UI designers, Product Owners, Developers web et mobile,.)

Notre maîtrise de l’ensemble de la chaîne de valeur d’un projet digital, nous permet de vous accompagner dans l’activation de leviers vous permettant de gagner en productivité, d'augmenter vos parts de marché, d’améliorer votre image de marque et/ou de fidéliser vos clients.

Notre méthodologie est centrée utilisateur et nos interventions toujours tournées vers des résultats mesurables dans le but de vous concevoir des outils toujours plus performants et rentables. 

Nous sommes agrées CII pour vos projets mobile et web et donc vous pouvez bénéficier d'un crédit d'impôt de 30% sur l'ensemble de nos prestations (soumises à conditions)

NOS DOMAINES D'EXPERTISE :

>>> USER EXPERIENCE >>>

UX research / UX design / UX writing

>>> USER INTERFACE >>>

UI design / Design d'interaction / Service blueprint / UI kit / Design system

>>> PROJECT MANAGEMENT  >>>

Positionnement produit / Définition solution / Contrôle qualité / Pilotage projet

>>> DEVELOPPEMENT WEB   >>>

 Sites vitrines / Plateformes e-commerce / Marketplace / Outils métiers / Intranets / Extranets / Maintenance

>>> DEVELOPPEMENT APP MOBILE >>>

Natif / 

Notre équipe de développeurs travaille exclusivement sur  la technologie React Native.

NOS CLIENTS  :

CITYSCOOT, COINHOUSE, SAINT LAURENT, EDF, GROUPE ADP, METROSCOPE, ORANGE, AMAZON, VINCI IMMOBILIER, MONEY TRACK, VEOLIA, RAIL EUROPE (SNCF), BLABLACAR, LOXAM, O'TACOS, THEOP, ENEDIS, SOWEE... 

Nous travaillons aussi bien avec des grands groupes leaders qu'avec des Startups prometteuses. des PME et des TPE. Nous avons accompagné ces cinq dernières années près de 100 clients évoluant dans secteurs d'activités variés. 

Découvrez toutes nos expertises et réalisations sur www.lebackyard.fr.

Blacksmith (www.blacksmith.studio) supports large accounts, SMEs, and startups as a CII-certified web agency and startup studio since 2016.

We are experts in digital projects: redesign or creation of showcase websites, logos, visual identity, web and mobile applications, dashboards, SaaS, institutional websites, e-commerce...

We handle design (UX/UI, Product Design) and develop tailor-made solutions for you within a scalable and secure cloud architecture.

Our expertise:

1) Design: UX/UI, audits, branding, advertising banners, emailing, print...

2) Web and Mobile Development: showcase websites, apps, SaaS, dashboards, e-commerce... as well as no-code/low-code websites.

Stack: AWS, Jamstack, Strapi, Vercel, React.js, Nest.js, Next.js, Shopify, Wordpress...

3) Project Management: agile or fixed-price project management

4) Cloud & DevOps: audits, implementation, CI/CD, IAC, stress tests...

5) Content Creation: social media posts, newsletters, photo shoots...

6) Web3: NFT minting on Ethereum, Solana, etc.

Some of our latest achievements:

- https://riotgamesfrance.fr/ (design + web development + cloud architecture)

- https://parisbusinessangels.com/ (design + web development + cloud architecture)

- https://www.riot.eurcommunitycompetition.com/fr (design + web development + cloud architecture)

- https://www.fhu-apollo.fr/ (design + web development + cloud architecture)

- https://skillwise.fr/ (design + web development + cloud architecture)

- https://www.cavaclasher.fr/ (design + web development + cloud architecture)

- https://justrent.fr/ (design + web development + cloud architecture)

We have also designed and developed hundreds of advertisements for major brands (GIFI, TATI, Intersport, Jardiland, H&M, etc.).

Blacksmith is also:

1️⃣ Partner Shopify, AWS, Vercel, Strapi, BigCommerce, and Klaviyo.

2️⃣ Recognized by Sortlist with 1 European Award for “best customer satisfaction” and 2 features in their Guide to the Best Agencies

3️⃣ CII Certified: you can recover 30% of the amount of our Innovation invoices as tax credits

The technical challenge is high? No worries, we have successfully created several complex custom products:

- integrating third-party banking services such as Treezor

- integrating complex private APIs with https://lepass.io/ which allows refueling using DSRC badges at ENI gas stations

- integrated into secure cloud architectures, allowing us to handle tens of thousands of simultaneous users while maintaining reasonable financial costs

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"I don't know who you are. I don't know what you want. [...] What I do have are a very particular set of skills, skills I have acquired over a very long career. Skills that make me a nightmare for your bugs. [...] If you let me loose on your code, it will end here. I will find them, I will hunt them down and I will kill them."

Jacky - Lead Dev @ Blacksmith

www.blacksmith.studio

Conquer the digital world and boost your online business!

With over 10 years of experience in IT and CII certified, Josh Digital is among the best next-generation French TECH Agencies, supported by BPI FRANCE, BNP PARIBAS & the PARIS IDF Chamber of Commerce.

Based on an agile, immersive, collaborative, and responsible approach, we provide high-level digital expertise thanks to our team passionate about new technologies, for the custom development of digital applications in continuous improvement:

- Business applications: ERP / CRM / Extranet / Intranet

- Mobile / tablet applications (iOS & Android)

- E-Commerce / Marketplace platforms

- Webservices

- IoT

Composed of creative & technical talents with fullstack skills and solid experience (UX/UI Design & IT Development), we aim to be a true extension of your team, adapting to your needs in a collaborative framework, and fully engaging in your project.

Josh Digital, in numbers, is:

+20 Employees

+95 Clients

+300 Digital Projects

+50 Mobile Applications

+30 Business Applications

Today, we collaborate with prestigious large companies and innovative startups, such as: BNP Paribas, Nicolas Feuillatte, SNCF, ISS France, Welkeys, Arioneo, Samboat... And many others who have chosen to trust us!

Always seeking innovation, we advise our clients on technological choices and the implementation of their digital projects.

Have a Tech Project to entrust to us? Gain digital productivity and competitiveness now!

#WECRETTECH

#WEAREJOSH

An emotional connection. That's what we build between brands and their communities. Our clients benefit from our unique approach, based on market research and brand strategy, with a refined collaborative process designed to foster trust and build your company's reputation.

Our approach is based on 4 pillars:

• Brand, acquisition, or operational Strategy.
• Branding, adapted to your growth stage.
• Web, for a frictionless user experience.
• Growth, to increase your visibility and revenue.

Our Vision

A pioneering and innovative vision of our profession: that's what characterizes Flying Saucer Studio. Since 2015 and the creation of the agency, our international team is present in France, Switzerland, the United States, and is entirely remote. All our processes are adapted for SMEs and Startups to provide quality work within remarkable deadlines and costs.

Finally, our leaders are renowned creatives with multiple FWA, Webby Awards, Gold Awards, and are also mentors for many accelerators such as Techstars and Alchemist.

Our Reason for Being

Our reason for being? We believe in Positive Impact; in the power that small and medium-sized businesses have to act quickly, solve major problems, and change the world positively. We believe in innovative entrepreneurs; who know how to combine economic success with benefits for the community.

Our support has contributed to the success of major funding rounds, over €20 million in Europe and North America.

Some examples of our creations?

Our international clients come from diverse industries: FinTech, HealthTech, SAAS, B2C, B2B, Hardware, AI, E-commerce; our expertise adapts to all your objectives. You can also find them in TechCrunch, the NY Times, USA Today, and many other media outlets.

https://calendly.com/flyingsaucerstudio/sortlist

Nous concrétisons vos projets avec une touche de magie, offrant des solutions sur mesure reflétant votre image de marque.

Démarquez-vous avec une identité visuelle unique, atteignez de nouveaux sommets avec des sites web dynamiques, captivants et réactifs, suscitez l’engagement avec des animations vibrantes, et dominez les réseaux sociaux avec une stratégie de contenu percutante. Laissez-nous illuminer votre identité visuelle et éclairer votre communication.

Hello Pomelo is your partner in digital transformation. We support you in creating tailor-made solutions that meet the current challenges of your business.

Our specialties:

- Web and mobile development: Design of intuitive and high-performance applications, adapted to the specific needs of your sector.

- E-commerce: Creation of tailor-made online sales platforms, optimized to offer a fluid and engaging user experience. We develop marketplaces, B2B e-commerce, B2C e-commerce, and we integrate PIM / DAM / MDM. We think about e-commerce architecture adapted to your business challenges.

- DevOps and Cloud: Implementation of agile and scalable infrastructures to improve collaboration between teams and accelerate the deployment of your solutions. We offer cloud migration services, cybersecurity, and monitoring.

Our successes:

We have the privilege of collaborating with companies such as Leboncoin, Photomaton, Mericq, Homair, Voyage Privé, Enovos, Proman... who have entrusted us with the realization of innovative and impactful projects. Thanks to our expertise, we know how to meet their challenges and support them towards successful long-term digitalization.

Why choose Hello Pomelo?

- Personalized approach: Each project is unique, and we are committed to providing solutions that precisely meet your needs.

- Long-term commitment: We don't just deliver a product; we offer continuous support to ensure the success of your digital transformation.

Join the companies that trust us to evolve their digital environment. Together, let's build sustainable and high-performing solutions!

A national leader in several specific markets, the Rivacom agency is today a key player in alternative communication in the West of France. Thanks to its 360° offering, Rivacom can respond to all communication issues: from strategic consulting to the implementation of press relations plans, including the production of print/digital/video content, or the execution of turnkey public relations operations.

Through its Rivacom Events brand, it is also a leader today in the organization of major events in the territory: the ATP tennis tournaments in Brest, Rennes and Vendée, ocean races such as the Route du Rhum-Destination Guadeloupe with OC Sport, and several BtoB or BtoC trade shows (tourism, seniors, Digital, etc.) are part of its catalog of recurring events.

ID Interactive is an independent digital agency founded in 2006, based in Brittany and specializing in the creation of custom websites and applications in Next.js and the digital performance optimization of its clients. Our mission is to find points of contact between brands and their audience and create the interactions to bring them to life.

Our expertise:

• Creation of websites and web apps (e-commerce or showcase)
• UX/UI design and conversion-oriented redesign
• SEO and long-term visibility strategy
• Google Ads & Meta Ads campaigns (Google Partner agency)
• Development of business tools and complex web platforms
• Maintenance, hosting, and continuous support

What makes us unique:

At ID Interactive, we believe that digital performance cannot be improvised: it is designed, built, and supported over the long term. Here's what sets us apart:

• 100% custom solutions

Each project is designed to meet your business challenges, without ever resorting to standardized solutions.

• Elite technical expertise

We have developed our own framework based on Next.js and Payload CMS, to create sites that are as fluid and performant as mobile applications.

• An integrated web & marketing approach

Design, development, SEO, Google Ads, analytics, content strategy... everything is managed coherently by a single team.

• A committed, human-sized team

No outsourced production or massive subcontracting: our experts are in-house and fully invested in your success.

• Proven experience

Nearly 20 years of existence and over 300 clients currently supported, in sectors as varied as industry, tourism, health, or retail.

• Ability to manage complex projects

Business platforms, extranets, multisites, API interconnections, CRM... we master advanced technical environments.

• Long-term support

Maintenance, hosting, functional evolutions, strategic reporting: we remain mobilized long after the launch.

• A results-driven culture

We believe in iterative methodologies and test & learn logic to maximize the impact of each digital action.

• A premium, accessible positioning

Quality of service, high standards, rigor, without the cumbersome nature of large agencies: we focus on excellence through proximity.

Wink Stratégies is a creative communication/marketing/public relations agency that helps companies and organizations communicate better, position themselves, and innovate intelligently.

Wink is an agency that combines strategy, creativity, and social engagement to help organizations turn their ideas from intention into impact.

We think, we create, we act — to advance useful, human, and inspiring projects.

Meaning. Beauty. Concrete results.

Wink transforms strong ideas into intelligent strategies, values into impactful campaigns, and commitments into visible and measurable actions.

A 360° communication agency, Wink Stratégies is composed of a multidisciplinary team, including project managers, communication and web marketing specialists, graphic designers, web designers, web developers, SEO specialists, social media specialists, and public relations specialists. The diversity of in-house talent allows for each project to be approached with a global and coordinated vision.

What sets the agency apart is its team of passionate individuals, combining creativity and rigor to develop innovative and effective solutions for its clients. Personally committed to the success of projects, each team member ensures that the client is fully satisfied with the results as well as with the contact with the agency throughout the project.

Since 2015, the agency has received several awards in Web design and media creativity and was nominated in the Agency of the Year category at the prestigious AWWWARDS.

Since 2014, Gradiweb has been supporting major E-commerce players in the design, development, and optimization of high-end Shopify sites.

Based in western Paris, our team of Shopify experts implements its know-how in user experience, graphic design, and feature integration to build high-performance sales tools perfectly tailored to needs. Nothing is left to chance; we ensure that the site is SEO-friendly, mobile-first, and fully configurable.

Digital Unicorn is a CII-approved digital studio, specializing in the design and development of high-performing, innovative, and tailor-made digital projects. We are a team of expert developers, designers, and project managers, all passionate about our craft and proud of the applications we create for our clients.

Whether you are a large company or an innovative startup, whatever your project, we are here to make it happen.

Technological Solution

• At the forefront of the latest trends and technological advancements, we conceive and develop the best solutions for each of your needs: connected objects, micro-geolocalization, artificial intelligence, virtual reality... We favor the most robust and efficient technologies such as React Native, Node.js, Redux, or Firebase for the development of your projects.

• We like to get involved in projects by proposing the creation and development of UX (User Experience), then UI (User Interface), and Design to ensure that the technical and commercial product design truly meets the needs of the target audience. We are convinced that close collaboration from the very beginning of an idea is the guarantee of rapid and efficient development, ensuring future success. We make this our priority.

UX and UI Design Solution

• Our designers work with you to create a graphical interface (UI) and user experience (UX) that meet the functional requirements of your project. We invite you to read the article we wrote on the definition of UX Design and its difference from UI Design.

• The design and development phases are very important. To help you stand out, design and user experience will allow us to offer a real Value Proposition for your project. This will determine the first impressions of your users.

K2 Web-Services transforms your ambitions into 7-figure digital infrastructures.

Founded by former Google & Meta alumni, our agency delivers over 1,000 projects for scale-ups, future unicorns, and CAC 40 groups.

We don't build websites.

We build client-generating machines:

+200% revenue via e-commerce redesigns (Pallet Ross)

Top 3 Google in 8 weeks on keywords with €50k/month

Landing pages that convert 12% of visitors into qualified leads

Our expertise:

Custom development (Next.js, Node, API-first)

Enterprise SEO (architecture, E-E-A-T, strategic link building)

Premium AI content (10,000 words/day, brand tone preserved)

Growth design (CRO, A/B testing, heatmaps)

Client types:

Post-Seed/Series A Startups · E-commerce > €5M revenue · B2B SaaS · Investment Funds

Average project budget: €35k – €150k

Average turnaround: 4 to 8 weeks

Results guaranteed by contract (KPI or partial refund).

Ready to scale? Book your free strategic audit (15 min).

Limited spots: 3 audits/week.

For 25 years, the SEO agency NOIISE has been supporting its clients in their digital marketing strategy.

⭐ Whether you want to improve your site traffic, increase your conversions and sales, or redo your website, our team of experts will meet your expectations.

At NOIISE, we put our heart into each of our projects and do everything we can to maximize your results. This has also allowed us to win several awards in our areas of expertise 🥇

🧑‍🎓 Our certifications: Google Partner Premier, Microsoft Advertising Partner, QASEO, CESEO

Find us in one of our 7 agencies: Paris, Lyon, Marseille, Nantes, Montpellier, Lille, Aix-les-Bains.

At iytro, we believe branding is more than surface-level beauty. It’s clarity, strength, and impact—the kind that turns heads and drives results.

Founded in 2019, iytro set out to help early-stage startups grow through flexible, part-time CMO support. Behind the scenes, our creative crew was the hidden engine—designing the brands, decks, and digital experiences that powered those missions. That team has since evolved into iytro creative studio: an independent powerhouse that blends design craft with the marketing sharpness of our iytro roots. With 150+ successful missions across industries, we know how to turn a vision into a brand that delivers—sustainably, authentically, and powerfully.

What we create

Brand Foundations :

• Strategic brand platforms that define your positioning and personality
• Distinctive naming that captures your essence
• Visual identity systems that work across every touchpoint

Digital Presence :

• Custom website design and development that converts
• User experiences that tell your story seamlessly

Brand Assets :

• Compelling pitch decks and presentations
• Marketing collateral that drives action
• Brand guidelines that ensure consistency
• Packaging, campaigns, and everything in between

Our approach

Design isn’t decoration. It’s strategy made visible. It’s how creativity becomes growth. We design with honesty, boldness, and empathy—never overcomplicating, always staying sharp.

Who we work with

Startup founders launching their first brand

Venture capital firms supporting their portfolio

Corporates with new ventures to prove

Scaleups facing marketing gaps or brand challenges

Real branding. No jargon. No fluff. Just your vision—brought to life.

Over 300 digital growth missions completed for its clients. Involvement, precision, performance.

At Digitalised, we have the art of finding growth where it lies. Our experts master the most innovative and high-performing tools on the market to address all your digital challenges: acquisition, retention, transformation, sales, virality, etc. This applies regardless of your sector or size.

We operate across the entire customer journey in pursuit of increased performance. You will thus be able to generate more qualified leads, increase your conversion rate, and conquer new targets thanks to the intensive work of our teams; with continuous adaptability.

We cultivate strong internal values: precision - innovation - performance - entrepreneurial DNA, which position us as a true growth partner. Our clients are not mistaken: we understand their challenges and their daily new business needs.

Digitalised operates the following services:

• Messaging automation (email, LinkedIn, WhatsApp, etc.)
• Nurturing and CRM
• UX / UI for web platforms and landing pages
• Natural referencing
• Google Ads
• Facebook Ads
• Instagram Ads
• LinkedIn Ads
• Audit and consulting for all digital issues

Article to read in CHALLENGES "Digitalised: a growth marketing gem that cultivates work ethic and attention to detail."

https://www.challenges.fr/partenaires/digitalised-une-pepite-du-growth-marketing-qui-cultive-valeur-travail-et-souci-du-detail_909510

Refresh Services is your digital coach and partner for your GDPR (General Data Protection Regulation) compliance. Our mission is to serve the long-term interests of our clients by developing customized, creative, and GDPR-compliant digital solutions to strengthen your customers' trust.

Our offers are as follows:

Logo, Graphics, UX/UI & SEO:

From the design of your logo to the optimization of your website (one page, showcase and e-commerce), we cover all the essential aspects to improve your online visibility, perfect the user experience and increase traffic to your site.

Automation & GDPR:

We simplify your internal processes through task automation, while ensuring that your company complies with current regulations, particularly regarding GDPR.

Digital Strategy:

We develop tailor-made strategies to help you achieve your online business objectives, using the latest digital trends and technologies.

ACME-SIGHT est une agence web indépendante. Nous accompagnons les entreprises dans la mise en œuvre de leur stratégie de communication.

Le digital est partout et le mobile pilote la transformation numérique.

C’est pourquoi nous prenons en compte vos besoins et spécificités, pour vous proposer la solution qui vous permettra de surfer sur la vague.

L’écoute attentive de nos clients est notre premier gage de réussite.

En somme, la créativité, l’intuitivité, l’efficacité et la performance sont nos valeurs.

ACME-SIGHT est une agence de communication web et print.

L'offre principale est la conception et la réalisation de sites internet. Nous avons fait le choix de prioriser l'usage mobile et la performance web, ainsi que la sécurité et la mise en conformité avec les nouvelles énoncées. La stratégie de communication digitale est mise en œuvre pour accroître la visibilité des entreprises en ligne et améliorer leur réputation sur le web.

L'offre web-marketing propose la gestion et l'animation des réseaux sociaux, de la rédaction web avec des articles de blog, des newsletters et campagnes e-mailing, du marketing de contenus (vidéos)…

La création graphique va de la création de logos à la conception des sites en UX-design. Sans oublier tous les supports de communication imprimés (cartes de visite, flyers, kakémonos, présentations commerciales, etc.).

L’expérience utilisateur au service de votre croissance

Que vous souhaitiez lancer ou refondre un site vitrine, un site e-commerce, une application mobile ou une solution métier sur-mesure, notre agence digitale - basée à Strasbourg, Aix-Marseille, Lyon et Paris - vous accompagne avec une approche méthodique et éprouvée, garantissant des résultats mesurables pour votre activité.

Couvrant tout le cycle de vie de votre projet de conception digitale, de la stratégie business à la réalisation technique, en passant par la recherche utilisateur, l’UX/UI design et l’amélioration continue des performances, nous créons ensemble des expériences impactantes et engageantes, qui font la différence depuis +15 ans.

Comme l’étoile du berger, les utilisateurs finaux et vos enjeux commerciaux nous guident dans chacune de nos missions.

Curieux d’en savoir plus ?

Challengez-nous !

03 67 10 08 49

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Nos expertises :

• Audit et analyse : https://adeliom.com/expertises/conseil-etude-ux/

• Conseil, cadrage et stratégie : https://adeliom.com/expertises/cadrage-strategique-amoa/

• Recherche utilisateur : https://adeliom.com/expertises/recherche-utilisateur/

• UX/UI Design : https://adeliom.com/expertises/ux-design-conception/

• UX Writing : https://adeliom.com/expertises/ux-writing/

• Développement web et app : https://adeliom.com/expertises/developpement-web-app-mobile/

• Web analyse et conversion (CRO) : https://adeliom.com/expertises/web-analyse-conversion-cro/

• Coaching et formation : https://adeliom.com/expertises/formation-coaching/