SVG export script for powerpoint. You create a diagram using powerpoint's shapes, text boxes, drawing tools, etc. Then you run export_to_svg (a macro) and bingo you have an SVG fragment that you can view in your favourite browser.
SlideCopy is an Add-In for MS Powerpoint that provides an easy way to copy Powerpoint slides as images into MS Word documents. It also inserts image captions based on the slide titles and easily replaces previously copied images with their new versions.