PaperLess was first a simple document scanner for Mac OS X.
Since it was not that easy to find the produced document and since searching the documents was also a pain, I had to create some kind of library that would contain all the documents. Creating folders for documents is a pain, then, I chose not to let the user do this and rather let him type a name and a comment so that he can search his documents. This is 2.0.

Available for download (Mac OS X).

Note: this is not open-source.