About Us



Userware is a leading software company founded in 2007 by two Microsoft technology experts. With headquarters in Paris, France, the company specializes in Microsoft technology and developer tools products, serving over 25,000 customers in 75+ countries.

Our Company

In 2014, Userware launched CSHTML5 later renamed to OpenSilver, a modern open-source reimplementation of Microsoft Silverlight that has since been continuously enhanced by a dedicated team and an active community of contributors for over 8 years.

Userware recognizes the significance of migration and offers professional services to help users smoothly transition their legacy Silverlight applications to OpenSilver. This migration is crucial in preserving the longevity of applications and Userware’s expertise in this area is unmatched.

We aim to build products on top of OpenSilver that will help .NET developers to continue to leverage their know-how and skills for some great Microsoft Technologies, in the new and modern tech contexts.

One of those products is XAML for Blazor.


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Customers in Countries

Our Vision and Mission

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