Windows users can download a free Power Point Viewer from the Microsoft Office site.

With the viewer, the .PPT file can be made accessible, the .PPT can be opened in the Viewer directly from the website, or can be saved to the users machine and viewed from there. The viewer can also be used to view PPT files sent as email attachments or wherever else they might pop up.

The preparer can, I believe, save the Power Point slides in a "self-executing" form that people can view without any additional tools; but this requires the Power Point Program "owner" to figure out how to do the proper save-file steps, to put it in the "bundled" format. Essentially, a "run-time" viewer is made part of the file itself. This does make the file an "executable" that may be blocked, or may require a "permission" click with some browser setups.

[Note that the US Department of Defense BANNED THE USE OF POWER POINT a couple of years ago, when a commanding general realized that not even people at DOD are stupid enough to believe that PPT pitches are an efficient method of communication. I share the general's opinion, although there are some people who like them.]

John