There are a number of libraries which have similar features to or
overlapping concerns with doodle. These are all worth checking out:
These are perhaps the most similar to doodle in intent.
command line option processing
If you think your library should be on this page, then drop me a line!
doodle itself is a descendant of an idea I had for Lisp Game (Ruby Quiz #49) (original
I was also influenced by the famous metakoans quiz.