Pixel-Perfect Multi-Platform Applications with C# and WinUI

Open-source UI Platform for building single-codebase applications for Windows, iOS, Android, WebAssembly, macOS, and Linux

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Target All Operating Systems & Browsers

The first C# & XAML, free and open-source platform for creating true single-source, multi-platform applications. Reuse 99% of the business logic and UI layer across native mobile, web, and desktop.

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Pixel Perfect Everywhere

Maintain pixel-perfect control over where pixels go while having a choice of developing platform-specific or custom look and feel of your application.

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C# and XAML Productivity

Familiarity and richness of C# and XAML combined with productivity boosts of hot reload, hot restart, edit and continue and more.

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csharp productivity

Power of Your Preferred IDE

Use familiar editors like Visual Studio, Visual Studio Code or Rider

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Support for Your Projects

Free and paid support is available by both community and our team. Chats, tickets or even screen sharing!

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Code Snippets & Sample Apps

Seeing is believing. Learn by doing. See code samples our engineers put out for fun, learning and reuse. Explore the possibilities Uno Platform opens.

Uno Gallery

A collection of ready-to-use Fluent and Material code snippets to help speed up your multi-platform development

Uno Playground

Write XAML live in the browser. Edit premade snippets or try your own code!

You are in Good Company

The following companies use the Uno Platform to develop their applications

Uno Platform in Tech Media

Our favorite Uno Platform appearances in Tech Media,
Channel 9 and Tech Podcasts

Build Your First App with Uno Platform
Join the Uno Platform team to see how you can create single-codebase apps for Windows,...
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Uno Platform Behind the Scenes
Uno Platform Behind the Scenes
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Uno Platform Part 1
Uno Platform Part 1
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