Cataclysm is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.

The Square font (data/font/square.ttf) is copyright Wouter van Oortmerssen, licensed under Creative Commons Attribution 3.0 Unported License. See http://strlen.com/square for more information.

GNU Unifont (data/font/unitfont.ttf) is licensed under GNU General Public License v2+ with the GNU font embedding exception. Visit http://unifoundry.com/LICENSE.txt for details.

Terminus Font (data/font/terminus.ttf) is licensed under the SIL Open Font License (see LICENSE-OFL-Terminus-Font.txt).

CATCH unit-test framework (tests/catch/catch.hpp) is licensed under the Boost Software License. Visit https://github.com/philsquared/Catch/blob/master/LICENSE.txt to read the license.

PLF List and PLF Colony (src/list.h, src/colony.h) are licensed under the zLib license (https://www.zlib.net/zlib_license.html).

getpost (tools/json_tools/format/getpost.h) is licensed under the MIT license, see file for text of license.

libbacktrace is licensed under a BSD license (https://github.com/ianlancetaylor/libbacktrace/blob/master/LICENSE). The full license text is as follows:

# Copyright (C) 2012-2016 Free Software Foundation, Inc.

# 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 name of the author may not be used to
#     endorse or promote products derived from this software without
#     specific prior written permission.

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.
