This is unclutter, maintained by Joey Hess <joeyh@debian.org>, 
originally packaged for Debian by Lars Wirzenius <liw@iki.fi>.

It was downloaded from ftp://export.lcs.mit.edu:/contrib/utilities/

The README states:

  The program is released into the public domain.  Only the considerate
  will leave credit for the author.

          Mark M Martin. mmm@cetia.fr  sep 1992.