> go to Github > for the most up to date version it is GPLv3 > https://github.com/stathissideris/ditaa/blob/master/LICENSE
The official-looking site sends you to SourceForge. Git and Svn repo functions are available there. At the time, the git part of it was empty. Building the 131K jar required the JDK on top the JRE, and, an IDE on top of that to press the Play button to build. Perhaps, org-mode can lean in toward extensions that are Free/Open/C/ELisp where possible. In this case, for a little bit of the GIMP to convert ASCII art to SVG or GIF image. The GIMP’s Script-Fu is a kind of Lisp.