The C# MVC library is a framework which helps in creating MVC applications with data binding and dependency injection. It has many built-in components like SignalR, Web API and others. It also provides a whole bunch of utilities to simplify development. Using the C# MVC libraries like Electron.NET, Chromely, serenity brings a lot of benefits to the application development life cycle. The main reason for this is that it requires no third-party dependencies and provides an easy way to build cross-platform apps.