d4x - Non-Free

http://archive.trisquel.info/trisquel/pool/extras/d/d4x/

Example: In d4x-2.5.7.1/main/ :

/* WebDownloader for X-Window
* Copyright (C) 1999-2002 Koshelev Maxim
* This Program is free but not GPL!!! You can't modify it
* without agreement with author. You can't distribute modified
* program but you can distribute unmodified program.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/