Castelis Group

The Castelis group is an independent group of 6 integrated companies.

Each company carries cutting-edge and complementary expertise in the digital world.

With regional roots in France (Paris, Lille, Nantes and Toulouse) and an international presence (Madagascar and the Philippines), the group is there to support you in your digital transformation projects.

The group currently has 250 employees for a turnover of 18 million euros.


Our 5 business expertises

Our technologies


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


Platform that allows you to build, deploy, and launch applications for Linux


Open Source projects and tools that allow mass storage and processing of data


Powerful and intuitive programming language for macOS, iOS, watchOS, tvOS and beyond.


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


Open source web application for creating online stores for the purpose of e-commerce.


Leader in Open Source JS frameworks.


Smartphones and tablets, connected objects and computers


Tailor-made e-commerce framework based on Symfony technology


System deployed in consumer and industrial embedded environments


It is one of the main automation servers available.


The most popular source manager


Company that provides web content management and multi-channel marketing automation software.

Microsoft 365

All the applications of the Office suite and online services dedicated to the digital workplace.

Microsoft Azure

Microsoft cloud solution to simplify and optimize data storage.

Power BI

Datavisualization and analysis service.

Microsoft Azure

Microsoft cloud solution to simplify and optimize data storage.


On-demand cloud service for businesses and individuals created by Amazon.

Google Cloud Platform

On-demand cloud service for businesses and individuals created by Google.

Google tag manager

Tool for managing and configuring tags developed by Google.

Google Data Studio

Google service for consolidation, data visualization and data sharing.

Power Bi

Microsoft Datavisualization and Analysis Service.

Six companies at your service

Your partner in tailor-made .NET development. Microsoft partner to support you in optimizing your productivity thanks to Microsoft 365.

Specialized in tailor-made development, with strong business expertise in finance, e-commerce and accounting-management.

A web development company based in Toulouse, the Sudalis team helps you build custom applications.

Expert in data collection, use and dataviz. Create value through data.

Our goal is to create powerful and efficient experiences that connect brands and users to secure, reliable and agile technological platforms.

Agency specializing in user experience design and front-end development.

20 M€
years of expertise
expert companies