Via Brett Terpstra’s ReCap - this looks like a great app for creating presentation that's trying something different than your typical Powerpoint/Keynote style build:

Concentrate on the content and simply write down your thoughts and Deckset turns them into awesome-looking slides.

Great looking default themes and writing/support for Markdown. Awesome.

Deckset is $19.99 in the Mac App Store

Screenshots

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