Channel apps for PowerPoint & PDF files?

Is anyone aware of any Roku channel apps that allow you the ability to view PowerPoint slides & presentations on your Roku connected TV?

I looked around online and found a few random forums where others asked the same with one or two responses stating "yes" but not offering any information. Of the single posting that named an app and provided a link and instructions on how to configure it, the link was dead and I could not find any info on the app.

These postings date back to 2011 and I did not find anything more current but the capabilities of the Roku has increased at least three-fold in the past 5 years.

Also searching for a way to view PDF files.