OpenSilver

OpenSilver: The open-source reimplementation of Silverlight.

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What is OpenSilver?

OpenSilver is a free, open-source UI framework designed for building modern .NET web applications using C# and XAML. It provides developers with the tools necessary to create rich, interactive web applications while leveraging their existing knowledge of .NET technologies. OpenSilver is professionally supported by Userware, ensuring that users have access to expert assistance and resources.

This framework is built on the foundation of Silverlight, allowing for a smooth transition for developers familiar with that technology. OpenSilver aims to modernize web application development by offering a robust set of features that enhance performance and user experience.

OpenSilver Features

Some of the key features and capabilities of OpenSilver include:

Support for C# and XAML, allowing developers to use familiar languages and frameworks.

Open-source nature, enabling community contributions and transparency.

Professional support from Userware, ensuring reliability and assistance for developers.

Compatibility with modern web standards, facilitating the development of responsive and dynamic applications.

Why OpenSilver?

OpenSilver is a free, open-source UI framework designed for building modern .NET web applications using C# and XAML. It offers a robust solution for developers looking to migrate from Microsoft Silverlight, ensuring that applications remain relevant and functional in today's web environment. With professional support from Userware, OpenSilver provides a reliable platform for developers to create and maintain their applications.

The advantages of using OpenSilver include:

Seamless migration from Silverlight, allowing businesses to continue their operations without major redevelopment.

Open-source nature, which fosters community collaboration and continuous improvement.

Professional support from experienced developers, ensuring timely assistance and expertise.

Compatibility with modern web standards, making applications accessible across various devices and platforms.

Learn more and.

Key Features

Cross-platform compatibility

Support for existing Silverlight applications

Active community and support

Open-source and free to use

How to Use

Visit the Website

Navigate to the tool's official website

What's good

Easy migration from Silverlight

Strong community support

Regular updates and improvements

What's not good

Limited documentation for advanced features

Some performance issues on older browsers

Choose Your Plan

OpenSilver Specialist Consultant

$2733

monthly

Expert guidance from a seasoned OpenSilver consultant
Up to 10 hours of dedicated monthly support
Flexible meeting schedules
Constant Teams/Slack connectivity
Customizable plans and initial trial session

OpenSilver Dedicated Developer

$5177

monthly

Access to a dedicated developer
40 monthly hours of support
Transparent workload estimations
Streamlined bug reporting and feature request process
Ideal for Silverlight/WPF migrations and new app development

OpenSilver Dedicated Developer Plus

$8179

monthly

Access to a dedicated developer from the OpenSilver creation team
Up to 70 hours of tailored monthly support
Daily collaboration and adaptable support
Experience in diverse projects
Customizable engagement levels

Performance Engineering Pack

$15,000

one-time for 100 hours

Identifying performance bottlenecks
Devising a strategy to address performance issues
Assistance to implement the strategy
Knowledge transfer about best practices
Senior OpenSilver Architect resource

OpenSilver Website Traffic Analysis

Visit Over Time

📅 Mar 2025-May 2025 All Traffic

Monthly Visits

1,342,199

+2.05%

Avg Visit Duration

00:04:48

+12.5%

Page per Visit

7.48

+8.3%

Bounce Rate

36.83%

-2.1%

Geography

📊 Mar 2025-May 2025 All Traffic

Traffic by Country

United States

17.34%

India

14.11%

Ethiopia

7.09%

Vietnam

5.75%

United Kingdom

3.79%

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User Reviews

4.8 (10)

Mike

Amazing AI-created portraits! I recently used this tool and was blown away by its stunning realism and fast processing speed. I definitely recommend it!

Avvi

Amazing AI-created portraits! I recently used this tool and was blown away by its stunning realism and fast processing speed. I definitely recommend it!

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Frequently Asked Questions

Introduction:

OpenSilver is a free, open-source UI framework designed for creating modern .NET web applications using C# and XAML. With professional support from Userware, it enables developers to leverage familiar technologies while ensuring compatibility with contemporary web standards. This framework streamlines the development process, making it easier to build rich, interactive user interfaces for the web.