Web and Mobile Developpement

Custom Web and Mobile Development

Our Open-source Lab is dedicated to development and innovative projects. On a daily basis, this means listening, sharing, testing... to innovate in the service of performance and user experience.

Do you want to innovate and develop impactful experiences?

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Steering from A to Z

Design

Identifying features is essential for the creation and redesign of interfaces, in order to optimize the user experience. UX & UI design is a crucial process for designing efficient and attractive interfaces. Prototyping allows us to test and validate proposed solutions before they go into production.

Production

Web and mobile development allows us to design institutional sites, showcase sites, mobile applications and custom business applications, using modern technologies to meet the needs of each project. This approach provides customized solutions for businesses, optimizing their online presence and operational efficiency.

Launch

Regular maintenance and monitoring of a website is essential to ensure an optimal user experience and maximize digital marketing performance. With custom web development, it is possible to adapt and implement evolutionary strategies to maintain the competitiveness of the company.

Web and mobile development for all your projects

Corporate website

Present your company in a credible and professional manner by communicating its values, missions and product or service offerings
Showcase website

Choose a solution that presents your company in an attractive and visual way, highlighting its products or services, its history and its values.
E-commerce website

Get started selling online with an easy-to-use platform, simplifying the user journey and providing a convenient and secure shopping experience.
B2B business app

Optimize your business with a custom B2B business application. Automate your processes, increase productivity and operational efficiency of your business with specific functionalities.
Mobile App

Create a professional and innovative mobile application for your business. Designed for smartphones and tablets, it provides access to useful features for users according to their needs

Our Technologies

Back
Mobile
Front

Symfony

Open source PHP framework for building web applications, APIs and web services.

Wordpress

Open source website builder, written in PHP with a simple and intuitive content management system.

Prestashop

Open source web application for creating online stores.

React native

Open source JavaScript library that allows you to create applications with the native features of IOS and Android smartphones.

Android

Mobile operating system developed by Google for smartphones, tablets, connected objects and computers.

Swift (IOS)

Programming language created by Apple to develop iOS and Mac apps.

Web pack

Open source JavaScript module grouper with the ability to generate static assets representing these modules.

Sass

Dynamic language for generating cascading CSS style sheets.

React

Open source JavaScript library developed by Facebook to facilitate the creation of web applications.

Angular

Open source framework written in JavaScript that allows the creation of web applications.

Our Achievements: Over 500 Projects Showcasing Our Expertise

Below, you can discover some of our references, selected from over 500 projects completed by our agency. Our clients, with whom we have collaborated for years, share their enthusiastic experiences about these successful projects.

These include mobile applications, business platforms, and institutional websites, all of which make us proud to have worked alongside these clients.

Want to join our satisfied clients?

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They trust us

Our clients talk about us

« Avec une équipe créative, pragmatique et force de propositions, Ylly a su être un véritable partenaire pour la création de notre application mobile. »

Charles Besnard

Directeur Transformation Digitale & Marketing - Garance Mutuelle

Our clients talk about us

« Their expertise as well as their listening skills make YLLY an agency with which collaboration rhymes above all with pleasure. »

Vincent Bailleul

Digital Manager - MSD France

Our clients talk about us

« Working with Ylly means working with peace of mind and personalized support. You don’t need to worry, and there’s always someone ready to listen! »

Sophie Matos

Communications Manager - ALK France

Our clients talk about us

« We have completed several projects with Ylly’s different teams, from mockups to development. The teams are attentive and offer valuable suggestions. It’s a pleasure to work with Ylly! »

Aurélie Faucheux

IT Project Manager - FEPEM

Our clients talk about us

« It’s a pleasure to collaborate with the Ylly teams. Beyond their expertise and performance, Ylly is a delightful agency that is always enjoyable to work with. Thank you for your work and dedication. »

Grégory Balleydier

Digital Director - Altarea

Bring your innovative ideas to life with personalized support!

We pride ourselves on our 10+ years of expertise in custom web development, and our ability to help businesses achieve their online goals.

We offer custom development for websites, mobile applications, e-commerce platforms and more. We ensure that every project meets quality and security standards.

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The personal data collected is intended for Ylly and used to process your request and, when you have not objected, to communicate our commercial offers to you. Access to data is strictly limited by Ylly to employees in charge of processing your request. In accordance with European Regulation n ° 2016/679 / EU of April 27, 2016 on the protection of personal data and the law "Informatique et Libertés" of January 6, 1978 amended, you have the right to access, rectify, 'erasure, portability and limitation of the processing of data concerning you as well as the right to communicate instructions on the fate of your data after your death. You also have the possibility of objecting to the processing of data concerning you. You can exercise your rights by contacting the DPO at the following address: dpo@ylly.fr or at our postal address. For more information, please see our privacy policy.

Experiences we designed

Ma Vie d'Allergik

A mobile application dedicated to supporting patients undergoing allergen desensitization treatment

Fepem.fr

Global Assistance for Fepem’s Customized Projects

Chryso

A WordPress Site Factory Deployed Across More Than 20 International Subsidiaries