PabloDraw - PabloDraw is an Ansi/Ascii text and RIPscrip vector graphic art editor/viewer with multi-user capabilities.
Playscii - Full-featured ASCII art and graphic editor and game creation tool
JavE - JavE (Java Ascii Versatile Editor) is a free Ascii Editor.
asciiflow - Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
REXPaint - REXPaint is a powerful and user-friendly ASCII art editor.
Sixteen Colors Draw - Open-source HTML5-based ANSI/ASCII editor.