collective.captcha is built on the Zope Application Server and SkimpyGimpy.

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 of the License, 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.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA.

collective.captcha includes soundfiles from SkimpyGimpy, which is licensed
under the BSD open source license:

 This software and documentation was written by Aaron Watters, 2006, and is
 distributed under the BSD open source license. If you have questions or
 comments please contact me using the email address below.
 mailto:arw1961@yahoo.com

collective.captcha includes a font derived from Bitstream Vera Sans Mono, 
which is licensed as outlined below. The font was renamed to Arev Sans Mono.

 Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera is
 a trademark of Bitstream, Inc.

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of the fonts accompanying this license (“Fonts”) and associated documentation
 files (the “Font Software”), to reproduce and distribute the Font Software,
 including without limitation the rights to use, copy, merge, publish,
 distribute, and/or sell copies of the Font Software, and to permit persons to
 whom the Font Software is furnished to do so, subject to the following
 conditions:
 
 The above copyright and trademark notices and this permission notice shall be
 included in all copies of one or more of the Font Software typefaces.
 
 The Font Software may be modified, altered, or added to, and in particular
 the designs of glyphs or characters in the Fonts may be modified and
 additional glyphs or characters may be added to the Fonts, only if the fonts
 are renamed to names not containing either the words “Bitstream” or the word
 “Vera”.
 
 This License becomes null and void to the extent applicable to Fonts or Font
 Software that has been modified and is distributed under the “Bitstream Vera”
 names.
 
 The Font Software may be sold as part of a larger software package but no
 copy of one or more of the Font Software typefaces may be sold by itself.
 
 THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
 TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL BITSTREAM OR THE GNOME
 FOUNDATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY
 GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN
 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR
 INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT
 SOFTWARE.
 
 Except as contained in this notice, the names of Gnome, the Gnome Foundation,
 and Bitstream Inc., shall not be used in advertising or otherwise to promote
 the sale, use or other dealings in this Font Software without prior written
 authorization from the Gnome Foundation or Bitstream Inc., respectively. For
 further information, contact: fonts at gnome dot org.
