This is webcheck, a command line utility for crawling websites. webcheck was originally named linbot which was developed by Albert Hopkins (marduk) . Versions up till 1.0 were maintained by Mike W. Meyer who changed the name to webcheck, http://www.mired.org/webcheck/. After that Arthur de Jong took up the work and did a complete rewrite, https://arthurdejong.org/webcheck/. Arthur de Jong is both the upstream and Debian package maintainer, so there are no differences between the Debian package and the upstream version. The Debian package of webcheck was previously maintained by Bastian Kleineidam . The Debian package of linbot was maintained by Colin Watson , Matej Vela and Jean Pierre LeJacq . Files: * Copyright: Copyright (C) 1998-1999 Albert Hopkins (marduk) Copyright (C) 2002 Mike W. Meyer Copyright (C) 2005-2010 Arthur de Jong License: GPL-2+ This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. . 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. See the GNU General Public License for more details. . On Debian GNU/Linux systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-2. . The files produced as output from the software do not automatically fall under the copyright of the software, unless explicitly stated otherwise. Webcheck contains the FancyTooltips javascript library to display readable tooltips. FancyTooltips is distributed under the MIT license and has the following copyright notices: Files: fancytooltips/* Copyright: Copyright (C) 2003 Stuart Langridge, Paul McLanahan, Peter Janes, Brad Choate Copyright (C) 2003 Dunstan Orchard, Ethan Marcotte, Mark Wubben Copyright (C) 2005 Victor Kulinski License: MIT As originally released by Stuart Langridge, this script is licensed under MIT - https://www.opensource.org/licenses/mit-license.php . "THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE."