Uno Platform

Uno Platform (/ˈuˌnoʊ/) is an open source cross-platform graphical user interface that allows WinUI and XAML - based code to run on iOS, macOS, Linux, Android, Windows and WebAssembly.^[3][4] Uno Platform is released under the Apache 2.0 license.

Uno Platform
Original author	nventive
Developers	Uno Platform and community
Initial release	May 7, 2018; 7 years ago (2018-05-07)[1]
Stable release	6.1.34 / July 17, 2025; 3 months ago (2025-07-17)[2]
Repository	github.com/unoplatform/uno
Written in	C#, XAML, .NET, .NET Framework, TypeScript, Xamarin, Universal Windows Platform, WinUI, WebAssembly
Platform	Web platform Mobile Device
Type	.NET Library and Framework
License	Apache License
Website	platform.uno

Applications can be built by using the tools in Visual Studio on Windows, including XAML and C#, and run on iOS, macOS, Android, Windows or in WebAssembly in a web browser.^[5] A plug in for Microsoft Visual Studio is available from Microsoft's Visual Studio Marketplace,^[6] VS Code Marketplace,^[7] or JetBrains Rider Marketplace.^[8] The community surrounding Uno Platform open source project comes together at its annual conference UnoConf.^[9]

Uno Platform is an open-source project sustained by a support model like Red Hat’s^[10] and via revenue from its commercial product, Uno Platform Studio, for which it raised a seed round.^[11] Microsoft and Uno Platform announced official collaboration on maintaining .NET for iOS and .NET for Android GitHub repositories, as well as co-maintenance of SkiaSharp repository.^[12][13]

See also

• WebAssembly
• Blazor
• .NET Multi-platform App UI (.NET MAUI)
• Windows App SDK
• OpenSilver