ReSTedit is a GUI tool for editing and interactivly exploring texts in the ReStructuredText format (or ReST) as defined by the Docutils project. ReSTedit is very useful for quickly checking if Docutils renders some text as you would expect it. You only paste it into a ReSTedit window to see if it's ok or not, without writing any test code around it. ReSTedit can also export HTML and PDF files (PDF needs a local LaTeX installation).
Mac OS X 10.2 or later