Source code to specific PDF Viewer project

I have been looking for the source code to this specific project and cannot find it PDF Viewer | Online and Free | Aspose.PDF.

Note that I have downloaded the source, ran all projects from the demo page, have been searching the web and cannot find this specific project.

This project does most of what I need and I want to prove it out before investing more time.

Is there a link that is available to that project source?

The application that produces the results of the work of which you see on the mentioned site has a closed code that is the property of the company.