OpenSilver
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OpenSilver is a modern, open-source UI framework that enables developers to build .NET web applications using C# and XAML. It offers seamless migration from Silverlight and WPF, ensuring code reusability and compatibility.
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OpenSilver is a modern, open-source UI framework that enables developers to build .NET web applications using C# and XAML. It offers seamless migration from Silverlight and WPF, ensuring code reusability and compatibility.
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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 supports WPF and Silverlight applications and facilitates seamless transition away from legacy Silverlight technology. The framework ensures 100% code reusability, compatibility with various modern web technologies like Blazor, React, and Angular, and offers an AI-enhanced XAML designer for Visual Studio Code. With OpenSilver, developers can build cross-platform applications that run on any browser and device, preserving the original look and feel of the apps, while significantly reducing the migration cost and time.
Who will use OpenSilver?
- Developers
- Software Engineers
- IT Managers
- Legacy Silverlight/WPF App Owners
How to use the OpenSilver?
- Step1: Download the OpenSilver SDK from the website.
- Step2: Set up your development environment with Visual Studio or Visual Studio Code.
- Step3: Create a new OpenSilver project or migrate existing Silverlight/WPF projects.
- Step4: Develop your application using C#, XAML, and other supported technologies.
- Step5: Test your application across various browsers and devices.
- Step6: Deploy your application to the web server or cloud platform.
Platform
- Web
- Chrome Extensions
- Mac
- Windows
OpenSilver's Core Features & Benefits
The Core Features
- AI-enhanced XAML Designer for VS Code
- 100% Code Reusability
- Cross-Platform (Windows, Mac, Android)
- Enterprise-grade controls and libraries
- Silverlight and WPF migration
- Compatibility with Blazor, React, Angular
The Benefits
- Reduces migration costs and time
- Ensures cross-platform compatibility
- Eliminates need for costly rewrites
- Allows leveraging existing code
- Provides dedicated support
- Maintains original app look and feel
OpenSilver's Main Use Cases & Applications
- Migrating legacy Silverlight applications
- Building new .NET web applications
- Creating cross-platform apps with C# and XAML
- Integrating with modern web technologies (Blazor, React, Angular)
OpenSilver's Pros & Cons
The Pros
Open-source and free to use.
Enables migration of legacy Silverlight and WPF apps to modern web technologies.
Supports 100% code reusability, saving time and costs.
Compatible with multiple web browsers and platforms.
Integrates with popular front-end frameworks like Blazor, React, and Angular.
Includes AI-enhanced drag-and-drop UI designer for easier app development.
Offers professional support and migration services.
The Cons
No direct AI functionalities despite having AI-enhanced UI designer.
Dependency on legacy tech knowledge (Silverlight/WPF) may limit new user adoption.
No explicit GitHub repository link provided on the main page.
Limited information on pricing beyond a general link to subscription support plans.
OpenSilver's Pricing
| Has free plan | YES |
|---|---|
| Free trial details | |
| Pricing model | Free |
| Is credit card required | No |
| Paid from | |
| Has lifetime plan | No |
| Billing frequency |
FAQs of OpenSilver
OpenSilver Company Information
- Website:
- Company Name: Userware
- Support Email:
- Facebook:
- X(Twitter):
- YouTube:
- Instagram:
- Tiktok:
- LinkedIn:
Analytic of OpenSilver
Visit Over Time
Monthly Visits
1.4k
Avg Visit Duration
00:00:55
Page Per Visit
2.34
Bounce Rate
50.58%
Jun 2026 - Aug 2026 All Traffic
Geography
Top 4 Regions
Germany
51.24%
Japan
24.9%
United States
16.33%
Russia
7.53%
Jun 2026 - Aug 2026 Worldwide Desktop Only
Traffic Sources
Direct
39.45%
SearchOrganic
33.36%
Referrals
11.12%
SocialOrganic
5.41%
DisplayAds
2.77%
Mail
2.51%
Affiliate
1.84%
GenAi
1.69%
SearchPaid
1.34%
SocialPaid
0.50%
Jun 2026 - Aug 2026 Desktop Only
Top Keywords
| Keyword | Traffic | Cost Per Click |
|---|---|---|
| xaml designer | 100 | $ -- |
| xaml | 4.9k | $ 1.81 |
| microsoft silverlight | 5.9k | $ 0.09 |
| photino | 1.1k | $ -- |
| newtonsoft json | 1.0k | $ -- |
OpenSilver Reviews
5/5
OpenSilver's Main Competitors and alternatives?
Blazor
React
Angular
Vue.js
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