Geany - The Flyweight IDE
ProseMirror
In-browser structured text editing component
Dcoder
Dcoder is an online compiler, a cloud based IDE for mobile and desktops, where one can code and learn algorithms. Now code, compile, run anytime anywhere.
Notepad
A simple, bare-bones, no-frills note taking app
GitJournal - MD Notes integrated with Git
Mobile First Markdown Notes integrated with Git
Markor
Markor is a TextEditor for Android. This project aims to make an editor that is versatile, flexible, and lightweight. Markor utilizes simple markup formats like Markdown and todo.txt for note-taking and list management. Markor is versatile at working with text, it can also be used for keeping bookmarks, copying to clipboard, fast opening a link from text and lots of more. Created files are interoptable with any other plaintext software on any platform.Markor is using open formats and is free software, openly developed and accepts community contributions.
Acode - Code editor for Android
Acode is light weight yet powerful code editor and web IDE for android. You can use this editor for editing HTML, JavaScript, text.
Coastline
Simple minimalist text editor. Open, edit and save plain text files
Org mode
Org: an Emacs Mode for Notes, Planning, Authoring and more!
Sublime Text
Available on Mac, Windows and Linux
jEdit
TextMate
TinyMCE
TinyMCE is the most advanced WYSIWYG HTML editor designed to simplify website content creation. The rich text editing platform that helped launched Atlassian, Medium, Evernote and more.
CKEditor
Rock-solid, Free WYSIWYG Editor with Collaborative Editing, 200+ features, Full Documentation and Support. Trusted by 20k+ companies.
BlueGriffon
BlueGriffon, the next-gen Wysiwyg Web Editor
QuickEdit Text Editor
Notepad++