Notepin - Extremely simple note-taking + blogging ✍️
Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.
TaskPaper - Plain text to-do lists for Mac
Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
Jot - The no-fuss way to take notes
Notepadqq - Notepadqq is a linux clone (identical application) of Notepad++