ReText – Markdown and reStructuredText Text Editor
ReText is a free and open source Markdown and reStructuredText Text Editor for Linux, Windows and MacOS. It is written in Python and released under GNU General Public License v3.0. It comes with live preview, supports tabs, full screen mode, formatting, symbols, syntax highlighting, table editing mode, image support and more. Using this app you can export to HTML, ODT and PDF formats.