MarkShown is a very simple app for quickly creating textual presentations which can be shown on an external display. A Markdown-like syntax is used to format presentation slides and presenter notes; the presentation slides will show on an AirPlay device, and the presenter notes will show on the local screen.

MarkShow is designed to make creating simple, text-based presentations easy, so it does not currently support images, slide transitions, or any other fancy features. If you need a more powerful presentation tool, then by all means stick with Powerpoint or Keynote.