Several scripts are used in GuppY version 5, you will find the list below.

We would like to thank their designers for their work and for choosing licenses to use their scripts.

CKEditor
  Copyright (c) 2003-2014, CKSource - Frederico Knabben. All rights reserved.
  For licensing, see LICENSE.html or http://ckeditor.com/license

Color picker
  Author: Stefan Petre www.eyecon.ro
  Dual licensed under the MIT and GPL licenses

PHPMailer
  Contact: via sourceforge.net support pages (also www.worxware.com)
  Info: http://phpmailer.sourceforge.net
  Authors: Andy Prevost (codeworxtech) codeworxtech[at]users.sourceforge.net
                : Marcus Bointon (coolbru) coolbru[at]users.sourceforge.net
  License: Distributed under the Lesser General Public License (LGPL)
    http://www.gnu.org/copyleft/lesser.html
    
Lightbox
  by Lokesh Dhakar - http://www.lokeshdhakar.com
  http://lokeshdhakar.com/projects/lightbox2/
  Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
  - free for use in both personal and commercial projects
  - attribution requires leaving author name, author link, and the license info intact

Lytebox
  Author: Markus F. Hay
  Website: http://lytebox.com  (http://dolem.com/lytebox)
  Date: January 26, 2012
  License: Creative Commons Attribution 3.0 License (http://creativecommons.org/licenses/by/3.0/)

Mobile_Detect
 Current authors: Serban Ghita <serbanghita@gmail.com>
                                Nick Ilyin <nick.ilyin@gmail.com>
 Original author: Victor Stanciu <vic.stanciu@gmail.com>
 License  Code and contributions have \'MIT License\'
                  More details: https://github.com/serbanghita/Mobile-Detect/blob/master/LICENSE.txt

HTML Purifier
  Author: Edward Z. Yang
  Website:http://htmlpurifier.org/
  License: Distributed under the Lesser General Public License (LGPL)
    http://www.gnu.org/copyleft/lesser.html

Highlight
  Author: Ivan Sagalaev <maniac@softwaremaniacs.org>
  Website: https://github.com/isagalaev/highlight.js/tree/master/src/styles
  Modified by Lud Bienaimé (Saxbar) for GuppY v5.02.00+
  License: BSD 3-clause \"New\" or \"Revised\" License

Unite Gallery
  general purpose responsive gallery jquery plugin
    created: 06/20/2014 by: valiano
    wesite : http://unitegallery.net/index.php
    email: web.power.net@gmail.com
  License : This item brought under MIT license.

 CodeMirror
   copyright (c) by Marijn Haverbeke and others
   Distributed under an MIT license: http://codemirror.net/LICENSE
   This is CodeMirror (http://codemirror.net/), a code editor
   implemented in JavaScript on top of the browser's DOM.
   
 Liquid Slider 2.3.9
   Copyright 2012 Kevin Batdorf
   http://liquidslider.com/
   MIT license
   GitHub : KevinBatdorf/liquidslider
   A Responsive jQuery Content Slider.