JavE - JavE (Java Ascii Versatile Editor) is a free Ascii Editor.
PabloDraw - PabloDraw is an Ansi/Ascii text and RIPscrip vector graphic art editor/viewer with multi-user capabilities.
asciiflow - Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
Core2D - A multi-platform data driven 2D diagram editor.
Sixteen Colors Draw - Open-source HTML5-based ANSI/ASCII editor.
GoVisual Diagram Editor - The GoVisual Diagram editor (GDE) provides powerful functionality for editing and automatic layout of diagrams, graphs, and networks. Printing and export