The recording of the first ever ReactiveUI virtual conference is available on our YouTube Channel.


ReactiveUI packages are now signed by the dotnet foundation. Only builds from their infrastructure carry this seal. ReactiveUI uses Azure Dev Ops for our CI pipeline. Each platform has packages that extend the base ReactiveUI offerings for it's concerns. Installing the correct packages for the correct platform can be somewhat of a pain.

Platform ReactiveUI Package NuGet Events Package
.NET Standard ReactiveUI CoreBadge None
ReactiveUI.Fody FodyBadge None
.NET 5 ReactiveUI CoreBadge None
ReactiveUI.Fody FodyBadge None
Unit Testing ReactiveUI.Testing TestBadge None
Universal Windows ReactiveUI CoreBadge ReactiveUI.Events
WPF ReactiveUI.WPF WpfBadge ReactiveUI.Events.WPF
Windows Forms ReactiveUI.WinForms WinBadge ReactiveUI.Events.WinForms
Xamarin.Forms ReactiveUI.XamForms XamBadge ReactiveUI.Events.XamForms
Xamarin.Essentials ReactiveUI CoreBadge ReactiveUI.Events.XamEssentials
Xamarin.Android ReactiveUI.AndroidSupport DroBadge ReactiveUI.Events
Xamarin.iOS ReactiveUI CoreBadge ReactiveUI.Events
Xamarin.Mac ReactiveUI CoreBadge ReactiveUI.Events
Tizen ReactiveUI CoreBadge ReactiveUI.Events
Platform Uno ReactiveUI.Uno UnoBadge None
Avalonia Avalonia.ReactiveUI AvaBadge None
Any ReactiveUI.Validation ValidationsBadge None

Note ReactiveUI has packages for older .NET versions. Those packages are unlisted from NuGet and not supported, but you can still use them at your own risk to have ReactiveUI running on good old devices, such as Lumias, Surface Hubs, Windows XP, etc. See Delisting of versions before 8.0.0 from NuGet blog post for more info.


The following isn't an exhausitve example, as some solutions will follow a different project structure or only use a subset of the platforms, but it should be enough to help with which packages to install on each platform project. Note non-platform specific packages (Reactive.Fody etc.) can be installed on any platform; Fody is often included in the core library to automatically generate the INotifyPropertyChanged boilerplate needed in the ViewModels.

    ├── {NAME}.Tests.Unit
        ├── ReactiveUI.Testing
    ├── {NAME}.Core (.NetStandard)
        ├── ReactiveUI
        ├── ReactiveUI.Fody
    ├── {NAME}.Droid
        ├── ReactiveUI.AndroidSupport
    ├── {NAME}.AndroidX
        ├── ReactiveUI.AndroidX
    ├── {NAME}.iOS
        ├── ReactiveUI
    ├── {NAME}.Mac
        ├── ReactiveUI
    ├── {NAME}.Forms (Xamarin Forms project)
        ├── ReactiveUI.XamForms
    ├── {NAME}.UWP
        ├── ReactiveUI
    ├── {NAME}.WPF
        ├── ReactiveUI.WPF
    ├── {NAME}.WindowsForms
        ├── ReactiveUI.WinForms
    ├── {NAME}.Tizen
        ├── ReactiveUI
    ├── {NAME}.Uno
        ├── ReactiveUI.Uno
    └── {NAME}.Avalonia
        └── Avalonia.ReactiveUI

Release Packages

ReactiveUI is published to when a release of the software is done. Get email notifications when new release is pushed over at reactiveui libraries

  • ReactiveUI
    • ReactiveUI is the base package that has the base platform implementations.
  • ReactiveUI.Events
  • ReactiveUI.WinForms
  • ReactiveUI.WPF
    • ReactiveUI.WPF this package has ReactiveUI platform specific extensions for WPF
    • Reactiveui.Events.WPF this package provides Observable-based events API for WPF UI controls/eventhandlers.
  • ReactiveUI.XamForms
  • ReactiveUI.Fody
    • ReactiveUI.Fody this package is a Fody extension that will generate RaisePropertyChange notifications for properties and ObservableAsPropertyHelper properties.

Development Packages

Pre-release nuget packages are uploaded to the Reactive UI GitHub Packages. You can use this feed to access hotfixes before they are released and to help the maintainers verify resolution to issues.

  1. Visit visualstudio consume
  2. Configure in the following address