Cart is free to use and redistribute, under the terms below. This license is similar to the Apache and BSD licenses, and as such does not require that modifications or modified distributions be released as open source.

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The Center for REALTOR(R) Technology Software License, Version 1.0

Copyright (c) 2003 The National Assocation of REALTORS(R).  All rights
reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in
   the documentation and/or other materials provided with the
   distribution.

3. The end-user documentation included with the redistribution, if
   any, must include the following acknowlegement:
      "This product includes software developed by the
       Center for REALTOR(R) Technology (http://www.crt.realtors.org/)."
   Alternately, this acknowlegement may appear in the software itself,
   if and wherever such third-party acknowlegements normally appear.

4. The names "NAR", "The National Association of REALTORS(R)", "CRT",
   and "The Center for REALTOR(R) Technology" must not be used to
   endorse or promote products derived from this software without
   prior written permission. For written permission, please contact
   info@crt.realtors.org

5. Products derived from this software may not be called "Cart"
   nor may "Cart" appear in their names without prior written
   permission of the authors or copyright holders.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE CENTER FOR REALTOR(R) TECHNOLOGY, THE NATIONAL
ASSOCIATION OF REALTORS(R), OR ITS CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

This license was based on the Apache Software License, Version 1.1,
for more information, please see <http://www.apache.org/>

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