NFOPad - NFOPad is a small, fast and flexible combined text editor and nfo viewer.
PabloDraw - PabloDraw is an Ansi/Ascii text and RIPscrip vector graphic art editor/viewer with multi-user capabilities.
Moebius ANSI and ASCII Editor - Modern ANSI & ASCII Art Editor
asciiflow - Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
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.
JavE - JavE (Java Ascii Versatile Editor) is a free Ascii Editor.