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.

Novelize - Novelize is an online novel writing app designed to keep authors on track.

Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.

BlankPage - Stay motivated to write, and finish your story

CotEditor - Open Source Plain-Text Editor for OS X

Manuskript - Open-source tool for writers.