XBPS includes the following software from third parties for internal use in the code: - queue.h from NetBSD: include/queue.h. - relational dewey version matching code from NetBSD: lib/external/dewey.c - strlcat and strlcpy functions from OpenBSD: lib/compat/strlc{at,cpy}.c - humanize_number(3) from NetBSD: lib/external/humanize_number.c - mkpath from NetBSD's mkdir(1): lib/external/mkpath.c - fexec from NetBSD's pkg_install: lib/external/fexec.c - libfetch-2.34 from NetBSD (pkgsrc/net/libfetch): lib/fetch - portableproplib-0.6.2 (lib/portableproplib) from http://code.google.com/p/portableproplib