Alice
Project manager, ready to support you in the continuous improvement of your projects

Independent digital agency specialized in B2B and B2C. For more than 10 years, we have been working on the digital transformation projects of our clients.

We create user-centric digital experiences with open source technologies.

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Photo Alice
Michele
Ergonomist expert, ready to place the user at the heart of the design process

Independent digital agency specialized in B2B and B2C. For more than 10 years, we have been working on the digital transformation projects of our clients.

We create user-centric digital experiences with open source technologies.

Learn more
Photo Michele
Morgan
Interface designer, ready to design graphical interfaces that look like you

Independent digital agency specialized in B2B and B2C. For more than 10 years, we have been working on the digital transformation projects of our clients.

We create user-centric digital experiences with open source technologies.

Learn more
Photo Morgan
Samuel
Technical Director, ready to bring your projects to life with the best Open Source technologies

Independent digital agency specialized in B2B and B2C. For more than 10 years, we have been working on the digital transformation projects of our clients.

We create user-centric digital experiences with open source technologies.

Learn more
Photo Samuel
Fabio
Performance manager, ready to guarantee the sustainable performance of your digital device

Independent digital agency specialized in B2B and B2C. For more than 10 years, we have been working on the digital transformation projects of our clients.

We create user-centric digital experiences with open source technologies.

Learn more
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By your side to make your digital transformation a success

We are a digital agency committed to the success of your projects.

Our goal is to create powerful and efficient user experiences, and secure, reliable and agile technological platforms.

Digital agency in Paris and Lille

We are committed to be by your side and support you in the success of the digital transformation of your business, providing expertise, talent and a « design thinking » approach.

Find out more about our expertise
Photo antargaz

Antargaz

Manage your energy through 5 customer areas
Photo MSD Poussin

Passeport poussin

Helping you make decisions and respecting procedures
Photo ALK

Ma Vie d'Allergik

Support you in monitoring your allergy
Photo garance

Garance

All brand ambassadors
Photo takeda

Takeda

Know your treatment path

Experiences we designed

Whatever your needs may be, our agile approach allows us to build a pragmatic and efficient response, that fits both your business needs and the customer’s expectations.

  • Antargaz
  • Passeport poussin
  • Ma Vie d'Allergik
  • Garance
  • Takeda
See more case studies

A team of experts in Open Source technologies

We are a team of thinkers and innovators, experts in open source technologies, committed and determined to reinvent the way we think about digital.

We believe that Open Source is our best ally. Indeed, why should one reinvent what already works? How could we think that we can do things better alone instead of contributing to the global Open Source community? 

We are always looking for the latest Open Source technologies so our team of front-end and back-end developers make your projects happen.

Discover our Open Source expertise
Image expert

A team ready to design positive experiences

Our team of UX experts uses research and innovation tools to put the user at the center of our process.

We are always looking for the best ways of transforming your products or services, taking into account the usage context, the user’s needs, wants and limitations, in order to create positive and feasible experiences.

Discover our human-centered methodology

Our clients are our partners

Success stories that inspire

« With a creative, pragmatic team and a force for proposals, Ylly has been a true partner in the creation of our mobile application. »

Charles BESNARD
Marketing director, Charles BESNARD

Success stories that inspire

« The Ylly teams were able to read my mind and create the platform I imagined »

Michael Tartar
Founder, DIMM.UP

Success stories that inspire

« Thanks to it's expertise, professionalism, listening skills and it's involved employees, the Ylly agency is a priviliged partner for the success of a project. »

Laurent Daluzeau
Technical manager, MSD Animal Health

Success stories that inspire

« An attentive, agile and responsive team. Ylly has always supported me, taking into account the objectives and the constraints. »

Mouna Mael Ainin
Digital project manager, ALK France

Success stories that inspire

« Its expertise as well as its listening skills, makes Ylly an agency with which collaboration rymes with pleasure. »

Vincent Bailleul
Digital manager, MSD Animal Health

Success stories that inspire

« The support and the expertise of the Ylly teams have been major assets in the setting up and success of our care pathway platform. »

Kevin Lam
Digital project manager, Takeda France
inspiration

Castelis business group

Since 2020 we are proud of being part of Castelis.

250
collaborators
18 M€
in revenues
250
years of experience
6
experienced companies
Learn more about the group