GroupDocs.Viewer is one of the best and most reliable Document Viewer API's
for
.NET and
Java on the market that supports over 140 document formats
and innumerous features.
Full costumization and flexibility will allow you to achive any desired output for any possible use case.
View documents from Amazon S3, Azure or any other source, render documents with high quality output,
use caching for faster document rendering and much more!