Reactive Extensions are published on both NuGet and MyGet.
Installing and using them is therefore the same as any other NuGet package:
Install-Package System.Reactive
NB package names changed between v2 and v3. See the README on Github for more info
Breaking changes
The NuGet packages have changed their package naming in the move from v2.x.x to >v3.0.0
Rx-Main is now System.Reactive Rx-Core is now System.Reactive.Core Rx-Interfaces is now System.Reactive.Interfaces Rx-Linq is now System.Reactive.Linq Rx-PlatformServices is now System.Reactive.PlatformServices Rx-Testing is now Microsoft.Reactive.Testing