Ask HN: What is your preferred PowerPoint alternative?

Size just never matters much. Bitmaps, as long as they are not too big just work. And, depending on content, are not even all that heavy.

Some presentations warrant the spiffy things PP and similar can do.

Many don't.

For some time now, I have archived software demonstrations as a series of screen captures too. Sometimes things break, and it is a nice fallback. Have totally ended up needing it too. (Enterprise apps failing badly)

Also a nice review tool.

"Here is what will happen..." Flip through them, annotate, done.

Just pile them into a directory, tweak names for display order, done.

Paint.net does just about all the quick, "communicate it" things needed. It is just too easy to drop images, text, graphics onto layers, shuffle, save, next.

As far as actual tools go:

I have used Presi.com a few times. Lots of fun! Easy. If you need some sparkle, that tool makes communicating big concepts graphically, very easy.

Very enjoyable program. For the right crowd, the high motion, graphical style is compelling.