Here are some resources dealling with ASCII art…
- AsciiToSVG - PHP code to convert ascii art into SVG.
- AsciiFlow - Web App implement an ascii art editor.
- Asciio A perl application allows you to draw ASCII diagrams in a modern (but simple) graphical interface.
- ditaa - Java based ascii art to PNG converter.
- shaape - Shaape is an ascii art to image converter designed to be used with asciidoc.
- blockdiag - blockdiag and its family generate diagram images from simple text files. (Python)