Github: https://github.com/mike-ward/Markdown-Edit
ZIP download: https://github.com/mike-ward/Markdown-Edit/releases (1.27 onwards)
Old link: https://temp-share.com/f/rwktjigair (1.26)
A full-featured Markdown editor for Windows with an emphasis on content and keyboard shortcuts
Tested: Portable, not stealth
Saves settings to user_settings.json in program directory under an "AppData" folder.
But also creates:
\AppData\Local\MarkdownEdit (some window position + recent document settings tied to the machine)
\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\mde.exe.log
Requires .NET 4.6 & Windows 7+ (see here)
The developer, Mike Ward, will provide an official portable version in the next release (current version is 1.26). Until then, use the temporary download link above (I'm not sure how long it will last).
Edit: current version 1.27 now includes portable ZIP.
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This program is particularly useful for me because of its nice PDF output. Haroopad can't export to PDF and CuteMarkEd's/Pandoc's/MMD2PDF's output is not very pleasing (I'm looking for a GFM-style PDF). The gold standard is still Atom + gfm-pdf package, which uses wkhtmltopdf. There's another package called markdown-pdf which does the same thing, but its major problem is that it puts links next to words instead of embedding them, which is unsuitable for hyperlinks in paragraphs. Since I'm on the topic, there's also a package called pdf-view, which lets you instantly see the resulting output PDF directly in Atom.
Edit: non-portable Typora also creates nice PDFs. If anyone knows any other programs that do this I'm all ears.
Edit 2: just realised that markdown-pdf above is supposed to be markdown-themeable-pdf. Got the two mixed up.
Edit 3: the gold standard is now Atom + markdown-themeable-pdf, since the dev has fixed the link issue