Devon Technologies: Producers of information organizing software with artificial intelligence. Mac OS only.

Omni Group: The Omni Group makes excellent idea organizing software, including OmniOutliner (creates outlines, but not your daddy's outlines!) and OmniGraffle for graphic organizers. Mac OS only; sorry Windows users. BTW, if you are a Windows user, isn't time to get a real OS? But I digress...

Of course, these discounts could change or be discontinued with no notice to me.