WinHTTrack Website Copier is free software under the GNU GPL, version 3 or
later. See license.txt for the terms.

The complete corresponding source for this exact build:

  Windows interface  https://github.com/xroche/httrack-windows/tree/c4d01391e909c0c73e24fcfb742813eb5eb6ae0d
  Engine             https://github.com/xroche/httrack/tree/b0972289468f41652f88708300d6fa0e33472b3f
  coucal (in engine) https://github.com/xroche/coucal/tree/d77caa7d226bcdd9f3d6521d53b94fb45435eeac

Downloadable archives of those revisions. coucal has to be taken separately:
it is a submodule, so the engine archive carries an empty src/coucal.

  https://github.com/xroche/httrack-windows/archive/c4d01391e909c0c73e24fcfb742813eb5eb6ae0d.tar.gz
  https://github.com/xroche/httrack/archive/b0972289468f41652f88708300d6fa0e33472b3f.tar.gz
  https://github.com/xroche/coucal/archive/d77caa7d226bcdd9f3d6521d53b94fb45435eeac.tar.gz
