StackEdit: A free, open-source Markdown editor based on PageDown
What I want to see is an open source markdown editor that renders the preview as you type where you type (not side by side).<p>For an example check out <a href="http://mangomarkdown.com/" rel="nofollow">http://mangomarkdown.com/</a> (which powers foldingtext).<p>There are a few projects that do this, but not open source, that I can find! It might not be that hard to change the current ones that go side by side to do this.<p>(I am planning to work on one, but have not gotten around to doing much, and will probably take a different approach to it than this)