The ALPS libraries are free for non-commerical use but require acknowledgements
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See the license text LICENSE.txt
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Basic libraries marked by an asterisk (*) in the previous section (i.e., alps/general,
osiris, and parser libraries) are also published as the ALPS
Light Libraries under the Boost
Software License (Version 1.0) without acknowledgement/citation requirement.
ALPS LIBRARY LICENSE version 1.1
Copyright (C) 2003-2005 Ian McCulloch. Everyone is permitted to copy and distribute
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This License applies to any software containing a notice placed by the copyright
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This license grants permission to use, reproduce, display, distribute, execute
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In any scientific publication based wholly or in part on the Library, the
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You may copy and distribute verbatim copies of the Library in the form
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You may modify your copy or copies of the Library, thus forming a work
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All citations listed in the CITATIONS.txt document that refer to
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You must cause any work that you distribute or publish, that in whole
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