Start building with Avalonia

Your first cross-platform app is three commands away. Free, open source, and built on the C# and XAML skills you already have.

Start in three commands Read the docs

Trusted by .NET teams around the world

Quick start guide

Create and run your first Avalonia app in three commands. Your app opens on screen after the final step.

Prerequisite: .NET 8 SDK or later. Download .NET

Install the templates

dotnet new install Avalonia.Templates

Create your first app

dotnet new avalonia.app -o MyApp

Run your app

dotnet run

Get started

One codebase. Every platform.

Avalonia is a free, open-source .NET UI framework. Use the XAML and C# skills your team already has to ship production apps across desktop, mobile, and web.

Read the docs

Set up your editor

Avalonia works with your favorite .NET IDE, and every option includes a live XAML previewer, so you see your UI change as you type.

Visual Studio

Our most advanced development experience. The live previewer renders your XAML as you type, IntelliSense that knows your controls and ViewModels. Advanced refactoring, code analysis, and improved code navigation.

Set up Visual Studio

Free to use

Visual Studio Code

Everything you need to start building at no cost: the live XAML previewer, code completion, and diagnostics, on Windows, macOS, and Linux.

Set up VS Code

JetBrains Rider

A community-maintained plugin that enables the legacy XAML previewer, allowing you to see the changes as you type.

Get the Rider plugin

Learn at the depth you need

Skim a sample, follow a full course, or read the docs end to end. These are the paths we point every new Avalonia developer to.

Documentation

Guides and reference for every part of the framework, from your first window to custom controls.

Sample apps

Complete, runnable projects that show real patterns for layout, data, and MVVM.

Tutorials

Step-by-step builds, including the to do list walkthrough that covers MVVM end to end.

Video course

AngelSix's free Avalonia series takes you from a new project to a real-world application.

Awesome Avalonia

The community catalogue of Avalonia libraries, tools, and open source apps to learn from.

Coming from WPF?

The migration guide for WPF developers: what maps directly, what changes, and how to move an existing codebase.

Beyond the framework

The framework is free. The platform grows with you.

Avalonia is MIT licensed and free for any use, forever. When it becomes part of how your team ships, three tiers add what production teams need: Plus unlocks the professional tooling, Pro adds the premium component suite, and Enterprise adds support direct from the team that builds the framework.