Ditaa is quite nice http://ditaa.sourceforge.net http://ditaa.sourceforge.net It uses ASCII-art boxes, lines, etc. as input (which you can draw using Emacs's a

Ditaa is quite nice http://ditaa.sourceforge.net http://ditaa.sourceforge.net It uses ASCII-art boxes, lines, etc. as input (which you can draw using Emacs's artist-mode, for example)