Yes. You can download and try Document Reader for Windows before purchasing a license. But some features have trial limitations.
PDF Reader: No limitations for all functions.
PST Reader: Only the first 10 items can be viewed, converted, exported, and printed.
DXF Reader: You can open, view, annotate, measure, and export only one file as a PDF.
DjVu Reader: Only the first page can be read, and export functions are unavailable.
Winmail Reader: Only the main body of the first file can be read, and attachments cannot be opened.