This is the software to open PDF files, commonly used format to distribute manual, catalogs and brochures (including our's).
These are software to use when you want to transfer file(s) from one site to the other (intranet as well as internet).
Obviously this software is used to compress your file(s) thus saving some hard disk space. Useful for simple data back-up and storage system.
This software is used specifically to open and view many graphic file formats (JPG, TIFF, GIF, BMP, DCX, WMF, PCD and many other image file format).