Build Avalonia apps in VS Code
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Everything you need, right in VS Code
Powerful XAML tooling built for Avalonia developers — free, with no account required.
XAML auto-completion
Code completion that knows your XAML structure, properties, and ViewModels inside and out — so you spend less time looking things up.
Enhanced errors & warnings
Catch mistakes before they compile. Inline diagnostics flag issues in real-time so you can fix them on the spot.
XAML Previewer
See a live preview of your XAML layouts directly in the editor as you type — no build required.
Go to Definition
Navigate directly to style, resource, and control definitions with a single click.
Auto XAML namespace imports
Automatically add the correct xmlns declarations when using controls from external packages.
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Get it now — it's freeProfessional XAML tooling for VS Code
Unlock advanced productivity features designed for professional Avalonia development.
XAML Outline
Navigate complex XAML files with a structured outline view that mirrors your control hierarchy — jump to any element instantly.
XAML Toolbox
Drag and drop common Avalonia controls directly into your XAML from a categorised toolbox — no need to type control names from memory.
Upgrade your VS Code workflow with the complete feature set
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Customer stories
"Avalonia has a very strong community, and frankly is a joy to work with."
Bill Henning
CEO & Founder, Actipro Software
Editions
Avalonia for VS Code comes in two editions
Avalonia for VS Code comes in two editions. Essentials provides core XAML editing capabilities at no cost, while Complete unlocks the full power of the extension with deeper refactoring and productivity features.
Core features
Complete edition
Yes, Avalonia for VS Code is completely free to use with no usage limitations. You can use it for personal, open-source, and commercial projects at zero cost.
No. The extension works out of the box with no account or sign-in required. Just install it from the VS Code Marketplace and start building.
Avalonia for VS Code runs everywhere VS Code does — Windows, macOS, and Linux. It also works with VS Code-compatible editors such as Cursor.
The extension provides XAML IntelliSense with autocompletion, a live XAML previewer, code navigation, error highlighting, and project templates to help you get started quickly.
The extension itself is not open-source, but it is free to use without restrictions. Avalonia UI, the framework it supports, is open-source and MIT-licensed.