Prince uses the following open source libraries:

Fontconfig 2.11.1
Copyright © Keith Packard
www.fontconfig.org

FreeType 2.5.2
Copyright © The FreeType Project
www.freetype.org

libcurl 7.43.0
Copyright © Daniel Stenberg
http://curl.haxx.se/libcurl/

libxml 2.9.2
Copyright © Daniel Veillard
http://xmlsoft.org

jpeglib 80
This software is based in part on the work of the Independent JPEG Group
http://ijg.org

GIFLIB Version 4.1, 
Copyright (c) 1997 Eric S. Raymond
http://sourceforge.net/projects/giflib/

zlib 1.2.8
Copyright © Jean-loup Gailly and Mark Adler
http://zlib.net

LIBTIFF, Version 4.0.3
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.

libpng version 1.2.51 - February 6, 2014
Copyright (c) 1998-2014 Glenn Randers-Pehrson
Copyright (c) 1996-1997 Andreas Dilger
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

cairo 1.14.2
Copyright © Carl Worth, Keith Packard and contributors
http://cairographics.org/

pixman 0.32.6
http://pixman.org/

libthai 0.2.4, libdatrie 1.3.3
Copyright © Theppitak Karoonboonyanan
http://linux.thai.net/projects/libthai/
See the file contrib/COPYING-LGPLv2_1
