Lenote
Lenote is a simple, distraction-free notetaking app that lets you capture and organize thoughts more productively.
22 Alternatives To Lenote
Atom
At GitHub, we’re building the text editor we’ve always wanted: hackable to the core, but approachable on the first day without ever touching a config file. We can’t wait to see what you build with it.
BBEdit
BBEdit is a professional HTML and text editor for Macintosh that provides features for editing, searching, and minipulation of text for web authors and software developers.
Joplin
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
LibreOffice - Writer
Open-source cross-platform word processor.
StackEdit
Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.