App Designing Agencies

W3r.one supports companies in the design and development of fully custom web and mobile applications. We build robust, intuitive, and scalable solutions, perfectly aligned with your needs, processes, and ambitions.

We get involved from the very first steps to structure requirements, lay solid technical foundations, and make the right choices from the outset. Thanks to our consulting approach, we help you connect your business challenges with the most relevant technologies and find solutions throughout the project, even as needs evolve.

We work with SMEs, mid-sized companies, and venture-backed startups looking to establish a solid technical stack to support their growth, reassure their investors, and scale without technical debt.

🎯 Our Approach

➤ Scoping workshops to align product vision and ground reality

➤ Highly user-centric UX/UI: clear, simple, effective

➤ Custom full-stack development (React, React Native, TypeScript, Symfony...)

➤ MVPs delivered in a few weeks, without compromising on quality

➤ Seamless integration of all your tools via API (ERP, CRM, third-party services...)

➤ AI & Data Expertise: automation, analytics, decision support

➤ Optimization of internal processes through custom business platforms

➤ Continuous technological consulting: architecture choices, scalability, technical trade-offs

💡 Our Difference

We translate your business challenges into concrete, high-performing digital solutions that are ready to evolve with you.

At W3r.one, every line of code serves a clear vision: to build a solid, scalable, and useful technical foundation.

Do you have an idea, a project, or a business need to transform?

📩 Contact us, let's talk about it.

At Wess Soft, we transform your ideas into tailor-made digital solutions, combining innovation, precision, and passion. We help project leaders, mid-sized companies, and international groups take a decisive step forward. Our mobile and web applications push the boundaries of technology and adhere to the most demanding quality standards.

Our numbers speak for themselves:

* 12 passionate experts united by a common vision: to create excellence.

* 200 successful projects that testify to our know-how.

* 10 years of experience serving your success.

Tailor-made solutions to bring your projects to life

With a personalized approach that combines innovation and attention to detail, we create high-performance digital platforms and tools. Working with us means giving your project the dimension it deserves to become a concrete success. We put our expertise at your service to create solutions perfectly adapted to your needs, with all the care and excellence of a custom creation.

Our expertise?

From custom mobile and web application development to the integration of advanced technologies like Blockchain and Artificial Intelligence, we push the boundaries of innovation. Whether for geolocation platforms, transport applications, social networks, or customized CRMs and ERPs, each project is designed to maximize your efficiency and productivity.

A delicious support at every stage

Our agency designs your project with care, following a tailor-made digital recipe where each ingredient is chosen with precision:

* A dash of creativity: We develop a Minimum Viable Product (MVP), an essential foundation for launching your idea quickly and effectively.

* A touch of refinement: Thanks to careful UI/UX design, we enhance the user experience for an irresistible presentation.

* A hint of innovation: At each stage, we adjust the flavors by integrating your feedback and that of users to ensure a perfect result.

Our achievements: limitless expertise

Our areas of intervention cover an unlimited range:

✅ Mobile application development for iOS and Android with Flutter, Xamarin, and MAUI

✅ Creation of collaborative websites, e-commerce, and business portals (B2B, B2C)

✅ Advanced software solutions: marketplaces, industrial management tools, geolocation applications, tourism platforms, and much more...

Ready to transform your business? With Wess Soft, accelerate your success!

Unique know-how that blends technology, design, and performance for high-end solutions.

Grafen is a Product, Data & AI engineering firm specializing in the design and development of fully customized digital business solutions. From strategic consulting and design thinking to web & mobile app development, cloud & DevOps, data analytics, AI, and cybersecurity, we deliver robust, scalable, and secure tools that adapt to your unique processes. Our mission is to centralize your data, automate repetitive tasks, and boost productivity, all with a rapid time-to-market, flexible financial approach, and long-term commitment to results.

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.

LE BACKYARD is a digital innovation agency that operates at a strategic level to create and optimize high-performing digital tools through user-centered design. Our agency is located in Paris 11th arrondissement, and our team is composed of 30+ experts (UX and UI designers, Product Owners, Web and mobile developers, etc.).

Our mastery of the entire value chain of a digital project allows us to support you in activating levers that enable you to increase productivity, grow your market share, improve your brand image and/or retain your customers.

Our methodology is user-centered and our interventions are always focused on measurable results with the aim of designing ever more efficient and profitable tools for you.

We are CII accredited for your mobile and web projects, so you can benefit from a 20% tax credit on all our services (subject to conditions)

OUR AREAS OF EXPERTISE:

>>> USER EXPERIENCE >>>

UX research / UX design / UX writing

>>> USER INTERFACE >>>

UI design / Interaction design / Service blueprint / UI kit / Design system

>>> PROJECT MANAGEMENT >>>

Product positioning / Solution definition / Quality control / Project steering

>>> WEB DEVELOPMENT >>>

Showcase websites / E-commerce platforms / Marketplace / Business tools / Intranets / Extranets / Maintenance

>>> MOBILE APP DEVELOPMENT >>>

Native /

Our team of developers works exclusively on React Native technology.

OUR CLIENTS:

AIR FRANCE, 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...

Discover all our expertise and achievements at www.lebackyard.fr.

At ALLOHOUSTON, we help SMEs and mid-to-large enterprises succeed in their digital transformation through custom software solutions that outperform standard SaaS.

Unlike traditional software vendors, we believe your business should not adapt to digital tools, but tools should adapt to your business. That's why we design, develop, and maintain personalized digital solutions, ranging from web and mobile applications to cloud platforms and AI solutions, all designed to integrate and evolve with your organization.

Why SMEs and Mid-to-Large Enterprises Work With Us

🔹 Your processes are too specific for standard software → We develop custom digital platforms tailored to your needs

🔹 You need fast and impactful results → We deliver an MVP in 3 months without compromising quality

🔹 You want a single team to manage the entire project → No intermediaries, a single team ensures continuity

🔹 Your software needs to evolve with your business → Our solutions are scalable and adapted to your growth

Our Solutions

✅ Business Platforms & Cloud Applications – Custom software solutions to digitize your operations

✅ AI & Data Analytics – Intelligent tools to optimize decision-making

✅ Process & Logistics Optimization – Automation and digital tools to improve operational efficiency

✅ Web & Mobile Applications – High-performance user experiences tailored to your business

Our Clients

We support CEOs, COOs, and CIOs of SMEs, mid-to-large enterprises, and large corporations who:

✔ Need custom digital tools to gain a competitive edge

✔ Are constrained by rigid SaaS or ERP software

✔ Are looking for scalable and high-performance digital solutions

🚀 Need software tailored for your business?

📩 Contact Us!

At Quantum, we are more than an agency.

We are a gravitational force at the service of your vision, a catalyst for opportunities, a committed partner in shaping a digital future in your image.

Our mission? To accompany you in every orbit of your digital transformation, with a tailor-made, ambitious, and profoundly human approach.

Our teams, whom we proudly call our "change architects," merge strategy, design, and technology to create memorable and lasting experiences.

Each project is a unique journey for us, a quest for useful innovation and creative excellence.

Quantum is structured around three areas of expertise:

• Strategy & Vision Hub

We listen, analyze, frame. Here, we build the solid foundations of your projects with audits, co-creation workshops, and a strategic vision for development aligned with your ambitions.

• Creation & Design Hub

Where emotion meets technology. We shape visual identities, elegant interfaces, and immersive content to captivate your users and powerfully convey your message.

• Development & Innovation Hub

Our technological playground. Here, we develop applications, platforms, interactive experiences, and AI solutions, with performance and scalability.

Join Quantum and give a new dimension to your projects.

For over 15 years, Adeliom has been the digital co-pilot for Mid-sized Companies, Large Enterprises & Organizations whose current digital model has reached its limits.



Scattered data, businesses constrained by tools, disjointed customer journeys, and a multitude of providers, without a conductor to orchestrate everything.

We support Digital, Marketing & IT departments in transforming their digital ecosystem into a lever for commercial and operational efficiency.



Our role: to frame, structure, design, optimize.



Concretely, our support is based on four phases:

1. Analyze and frame the project, to clarify the use cases, align stakeholders, and prioritize all their needs as well as the right performance indicators.

2. Structure the solution architecture, by modeling customer and business journeys, data flows, and defining the specific ergonomic and technical architecture.

3. Design tailor-made interconnected solutions:


• Product sites & order portals


• Customer & network spaces


• Product configurators & calculators


• Business & field tools (Technician, Sales Admin, HR, After-sales Service, Sales)

4. Continuously test, maintain, and improve, by sustainably evolving these services through various optimizations (UX, technical, CRO, accessibility) and reasoned AI implementations.



The result: better-equipped teams, loyal customers, and a fully mastered distribution network.

Ultimately,

Adeliom becomes a true extension of their team, aligning the IS with the reality of businesses and customers to put technology back at the service of the Humans who use it.



Some inspiring results: 



✔︎ +15 % qualified leads – Culligan


✔︎ +7 % conversion – Tryba


✔︎ +57 % orders – Airbus


✔︎ x2 online sales – Liebherr


✔︎ +8 % engagement rate – Airbus



A structuring project to launch? -> contact@adeliom.com | 03 67 10 08 49

Since 2016, Web Vision 360 has established itself as a digital agency where every project is unique. Our conviction: a 360° vision of digital, combined with the precise orchestration of strategic growth levers, is the key to transforming your objectives into tangible results.

Our rigorous methodology and our global expertise cover the entire digital spectrum: strategy, development, CRM, marketing, and acquisition. We don't just deliver projects, we create high-performing digital experiences that drive your growth.

Our Expertise

We go beyond isolated solutions to create a synergy of expertise:

• 🚀 Tailored digital strategy
• 💻 High-performance web development
• ⚙️ HubSpot CRM – Platinum Certified Partner
• 🎯 Google Ads – Google Partner Agency
• 🔍 SEO (technical, semantic & content)

Why choose us?

A passionate, certified, and ROI-oriented digital partner who transforms your challenges into concrete and sustainable opportunities.

👉 Let's meet and talk about your project: https://webvision360.com

When you hire Dreambridge, you hire the perfect combination of Human + AI. We craft impactful digital experiences and help your team be their best selves. We design interactive experiences across Apple Vision Pro, Augmented Reality, Virtual Reality, Digital Installations, GenAI Design, Web, Mobile and new emerging technologies. And we use AI to make your human colleagues superhuman! We are a diverse team that comprises of professionals from Software, Advertising, Gaming, Design and Production. Headquartered in Amsterdam, in The Netherlands, we have worked with clients across The Netherlands, France, Sweden, Belgium, Luxembourg, Switzerland, USA and India.

JUNR is a digital development studio that creates custom tools: web and mobile applications, AI, software, Automations, websites

Since 2012, JULOA has been supporting startups and companies in their digital transformation, combining strategy, creativity, and innovative technologies.

Based in Toulouse, the agency designs custom digital solutions — mobile applications, software, and platforms — for clients in France and internationally.

From idea to business optimization, we create solutions tailored to your challenges.

Our approach: from problem to solution

You have an idea, a need, or a problem, without necessarily having the technical vision to bring it to life.

JULOA supports leaders, business teams, and project managers in transforming this vision into a clear, useful, and actionable digital product.

We then act as a technical and product partner, from strategic thinking to development, through to the deployment of scalable and sustainable solutions.

Our expertise:

Custom mobile applications & digital platforms

Design and development of mobile applications (iOS, Android) and complex web platforms, from MVP to large-scale products, conceived for projects with significant business stakes.

Software and business solutions

Development of custom software and business tools to automate processes, optimize operational performance, and support growth.

Digital transformation & innovation

Consulting and implementation of solutions integrating automation and artificial intelligence (AI), to structure, modernize, and accelerate your digital uses.

Why choose JULOA?

• A team of experts (developers, project managers, UX designers) who transform your ideas into high-performing digital solutions, for nascent projects or established organizations.

• From consulting to delivery, we create tailor-made projects, focused on user experience and value.

• Mastery of modern technologies, from AI to automation, to keep your company or product at the forefront of innovation.

Embark on a digital conquest and boost your digital activity!

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

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:

* Specific business tools integrated into our clients' IS (BPM, DASHBOARD, EXTRANET / INTRANET, ERP, CRM)

* Mobile / tablet applications on iOS and Android (crossplatform)

* Self-hosted AI Solutions (RAG, LLM/VLM, NLP, DATA, AUTOMOTION, AGENTIC)

* Websites and dedicated platforms (Client areas, Partner areas)

* Proactive, corrective, and evolutive maintenance (TMA / TME)

* Server infrastructure outsourcing and devops

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, fully engaging in your project.

Josh Digital, in numbers, is:

+20 Employees

+95 Clients

+300 Digital Projects

+50 Mobile Applications

+30 Business Apps

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 productivity and digital competitiveness now!

#WEARETECH

#WEAREJOSH

Web, mobile and IT consulting agency.

A fusion between an IT consulting firm and a development agency, we support large companies, SMEs and pure players in the design and development of their digital solutions.

Our Mobile Factory is made up of experts in the design and development of mobile applications. We use the latest native or hybrid (cross-platform) technologies.

We can audit, monitor, update, promote, design, optimize or develop the next features of your mobile applications.

We support our clients on topics of custom web and mobile design & development.

Since 2010, we have been involved in creating websites, platforms, and mobile applications.

We work for start-ups and associations: Action contre la faim, Fondapol,

for large groups: Roche, Rungis, Nespresso, Freyssinet, Galbani, Best Westen etc.

as well as (very) innovative clients: Mirakl, SkinAnalysia etc.

We are involved in the Consulting phase: Usage & needs definition, Infrastructure & technologies, Digital transition consulting, but also in the execution phase: UX & UI, Web development, Mobile development,

as well as consulting in Server Infrastructure.

We favor close support for clients with dedicated project managers, using agile methods.

Our team is composed of specialized technical profiles, to approach our projects in an optimized way and be reactive to our clients' requests. Our quality testing and automated deployment methods allow us to maintain this same reactivity in the very long term.

Contact us for a free analysis of your project.

At SERUM AND CO, we adapt to your environment and your unique needs. With branches in Paris, Marseille, and Bordeaux, we are present from north to south to ensure smooth and effective collaboration, wherever you are. With us, your ideas come to life, tailor-made.

At SERUM AND CO, we have been developing websites (showcase, e-shop) for 20 years. We have designed a KPI-centric method that allows you to track and manage the performance of your website. One watchword: increase your revenue thanks to your digital ecosystem!

Location: Paris, Bordeaux, Marseille

A video from our CEO explaining what we do: https://www.linkedin.com/posts/serumandco_20ans-tech-it-activity-6996065974193942528-KScR

ZOL is more than 50 experts, completely geeks but highly approachable and totally obsessed with the success of the digital projects entrusted to them, and also quite fond of ribeye steaks and Burgundy wine, but that's another story! Our specialty? Personalization, differentiation, and the creation of unique solutions that allow companies to stand out from their competitors. In other words: custom-made, haute couture in digital version. We adapt technology to our clients' needs, not the other way around, and that changes everything! ZOL means 20 years of experience, more than 200 companies supported and 350 projects completed across 6 areas of expertise:

- Consulting & support for digital transformation - Technical architecture & development

- Development and creation of web and mobile applications - User experience & interface design - Data Marketing, SEO & GDPR - E-Commerce consulting and design We support entrepreneurs in a highly pragmatic way in all stages of their digitalization, to help them "perform" as they say at dinners, meaning simplifying their organization, identifying growth levers, or winning new clients. Websites, E-Commerce platforms, mobile apps, business tools, etc. All our creations are specific, robust, scalable, and secure. And unlike pre-formatted software that floods the market, the solutions we produce for our clients resemble them and belong to them 100%!

Full-service Product Agency based in Paris, Nantes, and Lyon, 40/60 Studio designs, creates, and develops digital products that your users will adopt long-term.

Our conviction: a good experience is not based on intuition, but on a fine understanding of usage.

We combine user insight, design, and technology to create useful, actionable, and measurable solutions.

Why choose us?

• UX & Insight Driven: We start from real usage to design fair, desirable, and effective products.
• Impact & Performance: Every design decision and every development is conceived to generate concrete results: conversion, engagement, efficiency.
• Full-Stack Product Expertise: From user research to development (Design System, apps, SaaS), we cover the entire value chain.

Key Figures & Experience:

• +200 projects launched since 2016 for growing startups and large corporations.
• Excellent customer satisfaction: Average rating of 4.97/5.
• Team of experts: More than 30 talents (designers, strategists, tech experts) dedicated to your success. Our areas of intervention:

We support local and international organizations on complex issues, at the intersection of business, user experience, and technology: Media, Mobility, Health, B2B SaaS, Retail, Industry, Impact.

More information on our website.

They trust us:

Stellantis | SNCF | Renault | TF1+ | Arte | Eiffage | Institut Pasteur | Heineken | France Télévion | Simplon | Visiativ.

Web Studios is a communication and digital strategy consulting agency, a partner for any organization or project leader wishing to create its own digital ecosystem, develop its visibility, and effectively and relevantly address its audience.

Founded in 2009 in Dreux, we are now a human-sized agency also present in Paris, in the 17th arrondissement. Our team of 12 professional experts focuses on close relationships to meet your needs and challenges in terms of strategy and digital transformation.

Specifically, our ambition 🚀: To offer you personalized support at each key stage of a complete and effective digital marketing strategy:

• Positioning Audit: By helping you position yourself in your market, identify your brand image, define or redefine your target audience, all questions that will allow you to analyze your situation beforehand and be clear about your positioning to establish an effective digital strategy aligned with your values and objectives.

• Web and Mobile Development: By guiding you towards a stable, user-friendly, and customized solution that will increase your visibility and notoriety: Showcase website, E-commerce site, UX/UI design, intranet/extranet, Progressive Web Application (PWA), business application creation.

• Content Production: By offering you decisive and high-potential content creations (texts, videos, motion design, photo retouching) that will contribute to giving meaning and value to your visual identity, attracting and engaging your audience, and converting your prospects.

• Acquisition & Loyalty: By optimizing your natural and paid visibility (SEO and SEA), your social media presence (Facebook, Instagram, LinkedIn), your online advertising campaigns Google Ads (Search, Remarketing, Display).

• Support & Training: By helping you better understand your digital situation through an audit of your website, social media, SEO/SEA, and e-reputation, and providing you with a diagnosis and, above all, an adapted action plan. Training is also a key element that we prioritize to make you autonomous in managing your communication tools.

Already 400 clients and 600 projects completed, be our next collaboration/partner, contact us at

01.88.33.95.50 / 02.46.83.03.72 or by email contact@web-studios.fr

Want to define or redefine your digital strategy but don't know where to start?

Contact us for a free initial consultation where we can advise you on your project.

/ ! \ Don't leave this page without watching our presentation video: / ! \ https://youtu.be/R8ngduenXj4

Ikovaline SAS conçoit et développe des produits digitaux sur mesure : SaaS, applications, logiciels métier et sites web.

Nous faisons partie des agences les plus performantes sur les plateformes spécialisées, avec un positionnement premium et une approche full-stack : on prend votre projet de A à Z, et on le construit comme un vrai produit.

Ce que vous achetez chez nous, ce n’est pas “un site” ou “une app”.

C’est une conception solide, pensée pour maximiser la réussite du projet sur le long terme.

Nous gérons l’ensemble du socle technique et produit :

— Cadrage & conception (besoins, priorités, roadmap),

— Architecture technique et choix de stack,

— UI/UX et design orientés usage,

— Développement full-stack (front + back + APIs + intégrations),

— Sécurité, robustesse et qualité (standards, validations, tests),

— Performance, scalabilité et mise en production propre.

Chaque décision est réfléchie pour éviter les erreurs classiques : dette technique, produit instable, expérience utilisateur bancale, et coûts qui explosent après coup.

Notre promesse : un partenaire capable de livrer un produit digital fiable, évolutif et sérieux avec la qualité d’une grande agence et la réactivité d’une équipe premium.