From Informative Graphics:
Multi-format desktop software to view, print, markup and compare PDF, TIFF, HPGL, AutoCAD, Microsoft Office (additional fee) and much more. Save files to PDF, TIFF or secure CSF. Compare feature can dynamically fade one file over the other and highlight differences.
What's new in this version:
Version 7.4.0 may include unspecified updates, enhancements, or bug fixes.