Well there is no asp.net mvc document viewer free version available. But you can always have a good asp.net mvc document viewer, which is available for free download.
With doconut you can have a 100% efficient, nice and simple document viewer available out of the box for you dms or cms or any other document viewing needs.
It is easy to integrate, and is fully customizable for your application needs. Why not give a try?
Fast, reliable and affordable .NET based document viewer that works with Asp.NET Webforms, MVC & .NET Core. It allows you to easily integrate document viewing function within your website. It is as easy as using a button element. Requires no installation or external plugins. For details please visit Asp.Net MVC Document Viewer website to download free trial for asp.net webforms, asp.net mvc and asp.net core document viewer.