HxD - HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and...
Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
WinHex - WinHex hex editor, disk editor, RAM editor. Binary editor for files, disks, and RAM. Download HEX EDITOR. Sector editor. Drive editor.
Typora - A minimal Markdown reading & writing app.
Hiew - Hiew (short for Hackers view) is a popular console hex editor for DOS and Windows written by Eugene...
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.