We appreciate your interest in our next generation library.
First of all, please note that the GroupDocs.Viewer for .NET v3.x is a UI-less API exposing only back end document rendering features in which object oriented approach has been implemented in a very simplified way. The latest API is different from the previous versions and the front end UI is disintegrated from it. To know more about the latest version, please visit this link
We have also created some sample open source front end applications for users to understand the working of the API. Moreover, users can also download and modify these front end applications as per their requirements.
I am listing down some useful resources for you to quickly get started with the next generation API.
Below is the list of sample open source front end applications developed using v3.x.
If you have any further questions, please let us know.