Hangfire project consists of a couple of NuGet packages available on NuGet Gallery site. Here is the list of basic packages you should know about:
Microsoft.Owin.Host.SystemWeb package for ASP.NET + IIS
If you are using custom installation within a web application hosted in IIS, do not forget to install the Microsoft.Owin.Host.SystemWeb package. Otherwise some features, like graceful shutdown may not work.
PM> Install-Package Hangfire
Right-click on your project in Visual Studio and choose the
Manage NuGet Packages menu item. Search for
Hangfire and install the chosen package: