Article · Wikipedia archive · Last revised Jun 2, 2026

Avalonia (software framework)

Avalonia is a free and open-source .NET cross-platform XAML-based UI framework inspired by WPF/UWP and distributed under the MIT License. Avalonia supports the MVVM pattern.

Last revised
Jun 2, 2026
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≈ 2 min
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Wikipedia ↗
Avalonia
Developers.NET Foundation and AvaloniaUI OÜ
Initial releaseDecember 5, 2013 (2013-12-05)1
Stable release
12.0.42 Edit this on Wikidata / 28 May 2026
Written inC#
Operating systemWindows, Linux, macOS, iOS, Android
TypeSoftware framework
LicenseMIT License
Websitehttps://avaloniaui.net/
Repositorygithub.com/AvaloniaUI/Avalonia

Avalonia is a free and open-source34 .NET cross-platform XAML-based UI framework 5 inspired by WPF/UWP and distributed under the MIT License.678 Avalonia supports the MVVM pattern.9

It enables development of cross-platform applications using any .NET language, including C#, F#10 and VB.NET for Windows, Linux, macOS, iOS, Android and WebAssembly.1112

Avalonia supports multiple renderers, including Direct2D and Skia Graphics Engine,13 allowing it to operate on a broad range of platforms. Avalonia draws its entire UI,14 mirroring the approach taken by Flutter.

History

Avalonia, originally named Perspex,15 was first developed by Steven Kirk, with its initial commit made on 5 December 2013. The framework was conceived with the aim of creating a cross-platform UI framework, inspired by Windows Presentation Foundation (WPF).16

Avalonia became part of the .NET Foundation17 on 1 April 2020,18 and left on 20 February 2024.19

On 24 June 2025, Avalonia announced a $3 million sponsorship from Devolutions to support the continued development of the framework while maintaining its free and open-source nature.20

IDE support

Avalonia maintains supports for the following IDEs and editors via plugins:

Other IDEs can be used with community-supported plugins, including JetBrains Rider.24

References

References

  1. "First commit to the Avalonia source code". GitHub. Retrieved 5 Dec 2013.
  2. "Release 12.0.4". 28 May 2026. Retrieved 29 May 2026.
  3. "Multiplatform XAML/C# Miracle Package: Avalonia. Comparing Avalonia to WinUI based Solutions". CodeProject. 2023-08-20. Retrieved 2023-12-22.
  4. Anderson, Tim. "Cross-platform Windows Presentation Framework, anyone? The short answer: yes. Unpacking Avalonia". www.theregister.com. Retrieved 2023-12-22.
  5. "ReSharper & Rider Improvements For Avalonia". The JetBrains Blog. 2021-04-12. Retrieved 2023-12-22.
  6. Avalonia on GitHub
  7. Jonathan Allen (2018-02-15). "An Early Look at Avalonia, a Cross-Platform UI Toolkit for .NET". InfoQ. Archived from the original on 2019-12-27. Retrieved 2019-09-19.
  8. Kay Ewbank (2019-03-07). "Avalonia Cross Platform .NET UI Framework". I Pogrammer. Archived from the original on 2018-05-14. Retrieved 2019-09-19.
  9. "The MVVM Pattern | Avalonia Docs". docs.avaloniaui.net. Retrieved 2024-08-12.
  10. "Lost in Details". lostindetails.com. Retrieved 2023-12-22.
  11. adrianhall (2023-09-08). "Build an Avalonia app with Azure Mobile Apps". learn.microsoft.com. Retrieved 2023-12-22.
  12. "Avalonia Reaches v11 GA Release". InfoQ. Retrieved 2023-12-22.
  13. Anderson, Tim (2023-07-10). "Avalonia 11 released: cross-platform framework gets new renderer plus iOS and Android support • DEVCLASS". DEVCLASS. Retrieved 2023-12-22.
  14. "Avalonia UI for .NET: Project Overview from Mike James". InfoQ. Retrieved 2023-12-22.
  15. "10 years of Avalonia!". www.avaloniaui.net. 2019-05-20. Retrieved 2026-03-08.
  16. Anderson, Tim. "Cross-platform Windows Presentation Framework, anyone? The short answer: yes. Unpacking Avalonia". www.theregister.com. Retrieved 2023-12-22.
  17. "Avalonia". Default. Retrieved 2025-01-08.
  18. "Modify copyright in licence. · AvaloniaUI/Avalonia@26738fe". GitHub. Retrieved 2023-12-21.
  19. "Farewell to the .NET Foundation". GitHub. Retrieved 2024-02-28.
  20. "A Significant Sponsorship to Drive Our Open-Source Roadmap!". Default. Retrieved 2025-06-24.
  21. "Avalonia for VSCode - Visual Studio Marketplace". marketplace.visualstudio.com. Retrieved 2023-12-22.
  22. "Avalonia for Visual Studio 2019 - Visual Studio Marketplace". marketplace.visualstudio.com. Retrieved 2023-12-22.
  23. "Avalonia for Visual Studio 2022 - Visual Studio Marketplace". marketplace.visualstudio.com. Retrieved 2023-12-22.
  24. "AvaloniaRider - IntelliJ IDEs Plugin | Marketplace". JetBrains Marketplace. Retrieved 2023-12-22.
Further reading

Further reading

External links