base on An advanced, composable, functional reactive model-view-viewmodel framework for all .NET platforms that is inspired by functional reactive programming. ReactiveUI allows you to abstract mutable state away from your user interfaces, express the idea around a feature in one readable place and improve the testability of your application.  [](https://codecov.io/gh/reactiveui/ReactiveUI) [](https://reactiveui.net/contribute) [](https://reactiveui.net/slack) <br> <a href="https://github.com/reactiveui/reactiveui"> <img width="160" heigth="160" src="https://raw.githubusercontent.com/reactiveui/styleguide/master/logo/main.png"> </a> <br> # What is ReactiveUI? [ReactiveUI](https://reactiveui.net/) is a composable, cross-platform model-view-viewmodel framework for all .NET platforms that is inspired by functional reactive programming, which is a paradigm that allows you to [abstract mutable state away from your user interfaces and express the idea around a feature in one readable place](https://www.youtube.com/watch?v=3HwEytvngXk) and improve the testability of your application. [🔨 Get Started](https://reactiveui.net/docs/getting-started/) [🛍 Install Packages](https://reactiveui.net/docs/getting-started/installation/) [🎞 Watch Videos](https://reactiveui.net/docs/resources/videos) [🎓 View Samples](https://reactiveui.net/docs/resources/samples/) [🎤 Discuss ReactiveUI](https://reactiveui.net/slack) ## Book There has been an excellent [book](https://kent-boogaart.com/you-i-and-reactiveui/) written by our Alumni maintainer Kent Boogart. ## NuGet Packages Install the following packages to start building your own ReactiveUI app. <b>Note:</b> some of the platform-specific packages are required. This means your app won't perform as expected until you install the packages properly. See the <a href="https://reactiveui.net/docs/getting-started/installation/">Installation</a> docs page for more info. | Platform | ReactiveUI Package | NuGet | | ----------------- | ----------------------------------- | ---------------------- | | .NET Standard | [ReactiveUI][CoreDoc] | [![CoreBadge]][Core] | | | [ReactiveUI.Fody][FodyDoc] | [![FodyBadge]][Fody] | | Unit Testing | [ReactiveUI.Testing][TestDoc] | [![TestBadge]][Test] | | WPF | [ReactiveUI.WPF][WpfDoc] | [![WpfBadge]][Wpf] | | UWP | [ReactiveUI.Uwp][UwpDoc] | [![UwpBadge]][Uwp] | | WinUI | [ReactiveUI.WinUI][WinUiDoc] | [![WinUiBadge]][WinUi] | | MAUI | [ReactiveUI.Maui][MauiDoc] | [![MauiBadge]][Maui] | | Windows Forms | [ReactiveUI.WinForms][WinDoc] | [![WinBadge]][Win] | | AndroidX | [ReactiveUI.AndroidX][DroDoc] | [![DroXBadge]][DroX] | | Tizen | [ReactiveUI][CoreDoc] | [![CoreBadge]][Core] | | Blazor | [ReactiveUI.Blazor][BlazDoc] | [![BlazBadge]][Blaz] | | Platform Uno | [ReactiveUI.Uno][UnoDoc] | [![UnoBadge]][Uno] | | Platform Uno | [ReactiveUI.Uno.WinUI][UnoWinUiDoc] | [![UnoWinUiBadge]][UnoWinUi] | | Avalonia | [Avalonia.ReactiveUI][AvaDoc] | [![AvaBadge]][Ava] | | Any | [ReactiveUI.Validation][ValDocs] | [![ValBadge]][ValCore] | [Core]: https://www.nuget.org/packages/ReactiveUI/ [CoreBadge]: https://img.shields.io/nuget/v/ReactiveUI.svg [CoreDoc]: https://reactiveui.net/docs/getting-started/installation/ [Fody]: https://www.nuget.org/packages/ReactiveUI.Fody/ [FodyDoc]: https://reactiveui.net/docs/handbook/view-models/boilerplate-code [FodyBadge]: https://img.shields.io/nuget/v/ReactiveUI.Fody.svg [Test]: https://www.nuget.org/packages/ReactiveUI.Testing/ [TestBadge]: https://img.shields.io/nuget/v/ReactiveUI.Testing.svg [TestDoc]: https://reactiveui.net/docs/handbook/testing/ [Wpf]: https://www.nuget.org/packages/ReactiveUI.WPF/ [WpfBadge]: https://img.shields.io/nuget/v/ReactiveUI.WPF.svg [WpfDoc]: https://reactiveui.net/docs/getting-started/installation/windows-presentation-foundation [Uwp]: https://www.nuget.org/packages/ReactiveUI.Uwp/ [UwpBadge]: https://img.shields.io/nuget/v/ReactiveUI.Uwp.svg [UwpDoc]: https://reactiveui.net/docs/getting-started/installation/universal-windows-platform [WinUi]: https://www.nuget.org/packages/ReactiveUI.WinUI/ [WinUiBadge]: https://img.shields.io/nuget/v/ReactiveUI.WinUI.svg [WinUiDoc]: https://reactiveui.net/docs/getting-started/installation/universal-windows-platform [Maui]: https://www.nuget.org/packages/ReactiveUI.Maui/ [MauiBadge]: https://img.shields.io/nuget/v/ReactiveUI.Maui.svg [MauiDoc]: https://blog.jetbrains.com/dotnet/2020/09/18/xamarin-maui-and-the-reactive-mvvm-between-them-webinar-recording/ [Win]: https://www.nuget.org/packages/ReactiveUI.WinForms/ [WinEvents]: https://www.nuget.org/packages/ReactiveUI.Events.WinForms/ [WinBadge]: https://img.shields.io/nuget/v/ReactiveUI.WinForms.svg [WinDoc]: https://reactiveui.net/docs/getting-started/installation/windows-forms [DroX]: https://www.nuget.org/packages/ReactiveUI.AndroidX/ [DroXBadge]: https://img.shields.io/nuget/v/ReactiveUI.AndroidX.svg [DroDoc]: https://reactiveui.net/docs/getting-started/installation/ [Uno]: https://www.nuget.org/packages/ReactiveUI.Uno/ [UnoBadge]: https://img.shields.io/nuget/v/ReactiveUI.Uno.svg [UnoDoc]: https://reactiveui.net/docs/getting-started/installation/uno-platform [UnoWinUi]: https://www.nuget.org/packages/ReactiveUI.Uno.WinUI/ [UnoWinUiBadge]: https://img.shields.io/nuget/v/ReactiveUI.Uno.WinUI.svg [UnoWinUiDoc]: https://reactiveui.net/docs/getting-started/installation/uno-platform [Blaz]: https://www.nuget.org/packages/ReactiveUI.Blazor/ [BlazBadge]: https://img.shields.io/nuget/v/ReactiveUI.Blazor.svg [BlazDoc]: https://www.reactiveui.net/docs/getting-started/installation/blazor [Ava]: https://www.nuget.org/packages/Avalonia.ReactiveUI/ [AvaBadge]: https://img.shields.io/nuget/v/Avalonia.ReactiveUI.svg [AvaDoc]: https://reactiveui.net/docs/getting-started/installation/avalonia [EventsDocs]: https://reactiveui.net/docs/handbook/events/ [ValCore]: https://www.nuget.org/packages/ReactiveUI.Validation/ [ValBadge]: https://img.shields.io/nuget/v/ReactiveUI.Validation.svg [ValDocs]: https://reactiveui.net/docs/handbook/user-input-validation/ ## Sponsorship The core team members, ReactiveUI contributors and contributors in the ecosystem do this open-source work in their free time. If you use ReactiveUI, a serious task, and you'd like us to invest more time on it, please donate. This project increases your income/productivity too. It makes development and applications faster and it reduces the required bandwidth. [Become a sponsor](https://github.com/sponsors/reactivemarbles). ## Migration from Xamarin and .NET 8 MAUI ### Xamarin Users As of May 2024, Microsoft ended support for Xamarin per their [support policy](https://docs.microsoft.com/dotnet/maui/what-is-maui#xamarin-retirement). ReactiveUI has removed support for legacy Xamarin platforms in favor of modern .NET MAUI. For Xamarin projects: - **Xamarin.Forms** → Migrate to **MAUI** and use `ReactiveUI.Maui` - **Xamarin.Android** → Migrate to **MAUI Android** or use `ReactiveUI.AndroidX` for native Android - **Xamarin.iOS/Mac** → Migrate to **MAUI iOS/Mac Catalyst** For guidance on migrating from Xamarin to MAUI, see the [official migration documentation](https://docs.microsoft.com/dotnet/maui/migration/). ### MAUI .NET 8 Users ReactiveUI now requires .NET 9 for MAUI platforms. Update your projects to: - `net9.0-android` (was `net8.0-android`) - `net9.0-ios` (was `net8.0-ios`) - `net9.0-maccatalyst` (was `net8.0-maccatalyst`) - `net9.0-windows` (was `net8.0-windows`) Note: Non-MAUI `net8.0` library targets remain fully supported. This is how we use the donations: * Allow the core team to work on ReactiveUI * Thank contributors if they invested a large amount of time in contributing * Support projects in the ecosystem ## Support If you have a question, please see if any discussions in our [GitHub issues](https://github.com/reactiveui/ReactiveUI/issues) or [Stack Overflow](https://stackoverflow.com/questions/tagged/reactiveui) have already answered it. If you want to discuss something or just need help, here is our [Slack room](https://reactiveui.net/slack), where there are always individuals looking to help out! Please do not open GitHub issues for support requests. ## Contribute ReactiveUI is developed under an OSI-approved open source license, making it freely usable and distributable, even for commercial use. If you want to submit pull requests please first open a [GitHub issue](https://github.com/reactiveui/ReactiveUI/issues/new/choose) to discuss. We are first time PR contributors friendly. See [Contribution Guidelines](https://www.reactiveui.net/contribute/) for further information how to contribute changes. ## Core Team <table> <tbody> <tr> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/glennawatson.png?s=150"> <br> <a href="https://github.com/glennawatson">Glenn Watson</a> <p>Melbourne, Australia</p> </td> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/chrispulman.png?s=150"> <br> <a href="https://github.com/chrispulman">Chris Pulman</a> <p>United Kingdom</p> </td> </tr> <tr> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/rlittlesii.png?s=150"> <br> <a href="https://github.com/rlittlesii">Rodney Littles II</a> <p>Texas, USA</p> </td> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/cabauman.png?s=150"> <br> <a href="https://github.com/cabauman">Colt Bauman</a> <p>South Korea</p> </td> </tr> </tbody> </table> ## Alumni Core Team The following have been core team members in the past. <table> <tbody> <tr> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/ghuntley.png?s=150"> <br> <a href="https://github.com/ghuntley">Geoffrey Huntley</a> <p>Sydney, Australia</p> </td> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/kentcb.png?s=150"> <br> <a href="https://github.com/kentcb">Kent Boogaart</a> <p>Brisbane, Australia</p> </td> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/olevett.png?s=150"> <br> <a href="https://github.com/olevett">Olly Levett</a> <p>London, United Kingdom</p> </td> </tr> <tr> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/anaisbetts.png?s=150"> <br> <a href="https://github.com/anaisbetts">Anaïs Betts</a> <p>San Francisco, USA</p> </td> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/shiftkey.png?s=150"> <br> <a href="https://github.com/shiftkey">Brendan Forster</a> <p>Melbourne, Australia</p> </td> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/clairernovotny.png?s=150"> <br> <a href="https://github.com/clairernovotny">Claire Novotny</a> <p>New York, USA</p> </td> </tr> <tr> <td align="center" valign="top" width="105"> <img width="100" height="100" src="https://github.com/worldbeater.png?s=150"> <br> <a href="https://github.com/worldbeater">Artyom Gorchakov</a> <p>Moscow, Russia</p> </td> </tr> </tbody> </table> ## .NET Foundation ReactiveUI is part of the [.NET Foundation](https://www.dotnetfoundation.org/). Other projects that are associated with the foundation include the Microsoft .NET Compiler Platform ("Roslyn") as well as the Microsoft ASP.NET family of projects, and Microsoft .NET Core. ", Assign "at most 3 tags" to the expected json: {"id":"2891","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"