Coastline - Simple minimalist text editor. Create, open, edit and save plain text files.
Brackets - A modern, open source text editor that understands web design
Nebulous Notes - Nebulous Notes is a powerful, yet simple, text editor for note-takers, writers, and coders.
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.
Jota Text Editor - Jota, pronouced as "i-o-ta", is a text editor designed for a long text file.
Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.