Top Sites>Avalonia UI - The Cross-Platform .NET UI Framework

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# Avalonia UI

> Avalonia UI is a cross-platform .NET UI framework for building desktop, mobile, and WebAssembly applications from a single codebase. It supports Windows, macOS, Linux, iOS, Android, and WebAssembly.

## Company

- Name: AvaloniaUI OÜ
- Website: https://avaloniaui.net
- GitHub: https://github.com/AvaloniaUI/Avalonia
- Documentation: https://docs.avaloniaui.net

## Products

### Avalonia UI (Open Source)
Cross-platform .NET UI framework using XAML. Supports styling, data binding, animations, templates, and custom rendering. Free and open-source under the MIT license.
- Product page: https://avaloniaui.net/avalonia
- Getting started: https://avaloniaui.net/gettingstarted
- Pricing: https://avaloniaui.net/pricing

### Avalonia XPF
Commercial product that runs existing WPF applications cross-platform on macOS, Linux, and more — without rewriting code.
- Product page: https://avaloniaui.net/xpf

### Tooling
Professional development tools included with Avalonia Plus and Pro tiers:
- DevTools: https://avaloniaui.net/devtools — Runtime inspection and debugging
- Parcel: https://avaloniaui.net/parcel — Cross-platform packaging and distribution
- VS Code Extension: https://avaloniaui.net/vscode — XAML IntelliSense and live preview
- Visual Studio Extension: https://avaloniaui.net/visual-studio — XAML designer and tooling

### Components
- Media Player: https://avaloniaui.net/media-player
- On-Screen Keyboard: https://avaloniaui.net/on-screen-keyboard
- Markdown Renderer: https://avaloniaui.net/markdown-renderer
- TreeDataGrid: https://avaloniaui.net/tree-data-grid
- Rich Text Editor: https://avaloniaui.net/rich-text

## Platform Support
- Windows: https://avaloniaui.net/avalonia/windows
- macOS: https://avaloniaui.net/avalonia/macos
- Linux: https://avaloniaui.net/avalonia/linux
- Mobile (iOS & Android): https://avaloniaui.net/avalonia/mobile
- WebAssembly: https://avaloniaui.net/avalonia/wasm

## Key Pages
- Blog: https://avaloniaui.net/blog
- FAQ: https://avaloniaui.net/faq
- Avalonia vs MAUI comparison: https://avaloniaui.net/maui-compare
- Showcase: https://avaloniaui.net/showcase
- Support: https://avaloniaui.net/support
- Professional Services: https://avaloniaui.net/services
- Contact: https://avaloniaui.net/contact

## Technology
- Language: C# / .NET
- UI markup: XAML (similar to WPF/UWP)
- Rendering: Skia-based, GPU-accelerated
- Architecture: MVVM pattern with reactive extensions
- License: MIT (framework), Commercial (XPF, enterprise tooling)

## Documentation & Resources
- Full documentation: https://docs.avaloniaui.net
- API reference: https://reference.avaloniaui.net
- GitHub repository: https://github.com/AvaloniaUI/Avalonia
- NuGet packages: https://www.nuget.org/profiles/AvaloniaUI
- Samples & templates: https://github.com/AvaloniaUI/avalonia-dotnet-templates
- Community chat: https://t.me/AvaloniaCommunity

## Comparisons
Avalonia UI is commonly compared to:
- .NET MAUI: Avalonia supports Linux and WebAssembly natively; MAUI does not. Detailed comparison: https://avaloniaui.net/maui-compare
- WPF: Avalonia uses similar XAML syntax but runs cross-platform. WPF is Windows-only. Migration guide: https://docs.avaloniaui.net/docs/get-started/wpf
- Electron: Avalonia produces native binaries with lower memory footprint. No bundled browser runtime.
- Flutter: Both use custom rendering. Avalonia targets .NET/C# developers; Flutter uses Dart.

## Enterprise & Support
- Enterprise support with SLAs: https://avaloniaui.net/support
- Professional services (consulting, migration, training): https://avaloniaui.net/services
- Reseller and distributor partnerships: https://avaloniaui.net/resellers
- Contact sales: https://avaloniaui.net/contact?area=sales

## Legal
- Privacy policy: https://avaloniaui.net/legal/privacy-policy
- Terms of service: https://avaloniaui.net/legal/terms-of-service
- Legal center: https://avaloniaui.net/legal