Windows, Android, Mac, Google Chrome, Firefox, Safari… – Build Once, Run Everywhere
Discover the future of .NET web apps with OpenSilver. Our latest 3.3 release enables Blazor Components to run directly into XAML applications, offers MAUI Hybrid integration, an AI-enhanced drag-and-drop UI designer, and unmatched compatibility with Microsoft WPF and Silverlight. Code in C#, VB, or F#, and leverage enterprise-grade controls and libraries, including RIA Services and LightSwitch. Explore the gallery, or try OpenSilver with zero setup in our live IDE at XAML.io
Have a Legacy WPF or Silverlight App?
We can help you migrate it to the modern web, ensuring a result that looks and feels identical to the original, at a fraction of the time and cost of a rewrite.
Want to migrate from WPF or Silverlight to OpenSilver on your own?
The full tech stack is open-source (MIT License) and it’s easy to get started. You can download the SDK or use our online .NET IDE at XAML.io (no install, no signup).
Our team is available for support (contact us or schedule a meeting with our experts).
Want a fast, cost-effective migration without compromising look or functionality? Our team has been successfully migrating WPF and Silverlight apps since 2014. Read the FAQ, get a quick quote by uploading your XAP file (for Silverlight app), contact us, or schedule a meeting.
With OpenSilver, you can transition away from WPF or Silverlight and save up to 3-6X on time and costs compared to a rewrite.
Get away from Windows-only, compatibiltiy modes, and platform limitations. Run your application everywhere.
Leverage your existing Silverlight or WPF code, giving your old projects new life.
Considering a switch to other tech stacks? Mix and match with OpenSilver!
Skip the cumbersome rewrite process : keep your existing UI 100% intact, upgrade it —your choice.
As you start migrating, get dedicated support from our team of experts who are always available to assist you along the way.
Screen to Screen parity, no need to retrain users or redo user documentation, a seamless transition to a modern framework.
With OpenSilver, you can transition away from WPF or Silverlight and save up to 3-6X on time and costs compared to a rewrite.
Get away from Windows-only, compatibiltiy modes, and platform limitations. Run your application everywhere.
Leverage your existing Silverlight or WPF code, giving your old projects new life.
Considering a switch to other tech stacks? Mix and match with OpenSilver!
Skip the cumbersome rewrite process : keep your existing UI 100% intact, upgrade it —your choice.
As you start migrating, get dedicated support from our team of experts who are always available to assist you along the way.
Screen to Screen parity, no need to retrain users or redo user documentation, a seamless transition to a modern framework.
Find out why leading companies work with us
Repton Projects – The legacy Silverlight application utilized Telerik controls and RIA services. The migrated version retains its appearance, performs faster, and preserves over 99% of the original code, resulting in at least a threefold cost and time savings.
Repton Projects, established in 2008, is a client-driven Project Management consultancy formed by merging Intorno Limited and Doctrinu2 Limited. They offer Project on Demand, an online project management system, consultancy services, and training to optimize project investments.
PMC at Repton Projects
“Facing the challenge of migrating from Microsoft Silverlight to OpenSilver, Userware proved to be the solution we needed. They dispelled our initial skepticism by presenting technical options and demonstrating a commitment to making our project future-proof. Their team delivered a solid and trustworthy solution at a fair price, effectively managing the project and adapting to unforeseen challenges. The result was a successful migration, allowing us to continue selling our software without major redevelopment. We highly recommend Userware for their technical expertise and professionalism.”
For general inquiries, please send an email to: [email protected]
Or reach out to us at : +16469026144 or +33757690570
For migrations-related inquiries (getting a quote, analyzing the compatibility of your code, discussing the technology, etc.), please write to: [email protected]
If you have a Support Plan subscription or would like to subscribe to one, please write to: premium-[email protected]