What is this?
Uno Platform is an open-source platform for building native mobile, web, desktop, and embedded apps from a single C#/XAML codebase, using the WinUI 3 API surface.
Uno Platform is an open-source platform for building native mobile, web, desktop, and embedded apps from a single C#/XAML codebase, using the WinUI 3 API surface.So is it a framework I code against, or an app I run?It is an open-source UI framework with platform heads and developer tooling: you build one C#/XAML project in your own IDE, and the build produces a native app package for each target platform.
It is an open-source UI framework with platform heads and developer tooling: you build one C#/XAML project in your own IDE, and the build produces a native app package for each target platform.What do I need to do to create my first app?Run the Uno.Check command-line tool, which installs and configures all required workloads and dependencies, then create a new project with the Template Wizard in your IDE or from the command line.
Run the Uno.Check command-line tool, which installs and configures all required workloads and dependencies, then create a new project with the Template Wizard in your IDE or from the command line.Which IDEs and operating systems can I develop on?It is all .NET: Uno.Check sets up the required workloads for you, and you can develop in Visual Studio, JetBrains Rider, or VS Code on Windows, macOS, or Linux.
It is all .NET: Uno.Check sets up the required workloads for you, and you can develop in Visual Studio, JetBrains Rider, or VS Code on Windows, macOS, or Linux.Will my UI look exactly the same on every platform?By default a Skia engine draws your UI on one canvas, so every target stays pixel-perfect and consistent; if you want a platform-native look instead, the XAML is translated into native controls like UIKit on iOS.
By default a Skia engine draws your UI on one canvas, so every target stays pixel-perfect and consistent; if you want a platform-native look instead, the XAML is translated into native controls like UIKit on iOS.Is this hobbyist tooling or production-grade?Production-grade: it is used in mission-critical apps by enterprises like Toyota, Microsoft, and Kahua, with over 300 contributors and 130M+ NuGet downloads.
Production-grade: it is used in mission-critical apps by enterprises like Toyota, Microsoft, and Kahua, with over 300 contributors and 130M+ NuGet downloads.Which platforms can the same codebase ship to?From one codebase it targets iOS and Android, WebAssembly, Windows 10 and 11, Windows 7 via Skia Desktop, macOS, and Linux via Skia Desktop with X11 or Framebuffer for embedded scenarios.
From one codebase it targets iOS and Android, WebAssembly, Windows 10 and 11, Windows 7 via Skia Desktop, macOS, and Linux via Skia Desktop with X11 or Framebuffer for embedded scenarios.What does Uno Platform Studio add on top of the framework?Studio is the AI-native suite around the core framework: a browser app that turns a prompt into a working cross-platform app, an AI agent with 70+ Uno-specific skills shipping as a plugin for Claude Code, GitHub Copilot, and OpenAI Codex, Hot Design (a patented runtime visual designer), Figma design-to-code export, and MCPs that give agents access to Uno docs and your live running app.
Studio is the AI-native suite around the core framework: a browser app that turns a prompt into a working cross-platform app, an AI agent with 70+ Uno-specific skills shipping as a plugin for Claude Code, GitHub Copilot, and OpenAI Codex, Hot Design (a patented runtime visual designer), Figma design-to-code export, and MCPs that give agents access to Uno docs and your live running app.Can I change XAML and C# while the app is running?Yes — Hot Reload works for both XAML and C# on WebAssembly, macOS, Linux, Windows, iOS, and Android, letting you iterate on a running app without losing its state.
Yes — Hot Reload works for both XAML and C# on WebAssembly, macOS, Linux, Windows, iOS, and Android, letting you iterate on a running app without losing its state.What controls and libraries do I get out of the box?Hundreds of UI components from WinUI, the Windows Community Toolkit, Uno Toolkit, and even .NET MAUI controls, with Material, Fluent, or Cupertino theming. Compatible libraries include Prism, SkiaSharp, ReactiveUI, LiveCharts, MapsUI, and LibVLCSharp.
Hundreds of UI components from WinUI, the Windows Community Toolkit, Uno Toolkit, and even .NET MAUI controls, with Material, Fluent, or Cupertino theming. Compatible libraries include Prism, SkiaSharp, ReactiveUI, LiveCharts, MapsUI, and LibVLCSharp.Is XAML the only way to build the UI?No — you can write XAML or C# Markup in the same single project, and conditional XAML lets you reach native controls and properties on specific platforms.
No — you can write XAML or C# Markup in the same single project, and conditional XAML lets you reach native controls and properties on specific platforms.What are similar projects?Avalonia, maui, MonoGame, sentry-dotnet, runtime, BenchmarkDotNet, CodeHub, SharpIDE
Avalonia, maui, MonoGame, sentry-dotnet, runtime, BenchmarkDotNet, CodeHub, SharpIDEWhich topics is it in?xamarin, winui, xaml, mvvm, c-sharp, webassembly, github-copilot, dotnet, c#, csharp, wasm, hacktoberfest
xamarin, winui, xaml, mvvm, c-sharp, webassembly, github-copilot, dotnet, c#, csharp, wasm, hacktoberfest