Unless otherwise specified, wimlib and all programs and scripts distributed with it may be redistributed and/or modified under the terms of the GNU General Public License; either version 3 of the License, or (at your option) any later version. See COPYING.GPLv3. However, the following exception is granted. When not prohibited by conflict with a third-party software license, you may opt to redistribute and/or modify the library portion of wimlib under the terms of the GNU Lesser General Public License; either version 3 of the License, or (at your option) any later version. See COPYING.LGPLv3. The following paragraph is informational only. The above exception is known to be relevant for the third-party library "libntfs-3g", which is licensed GPLv2+. On UNIX-like systems, wimlib can optionally be compiled with libntfs-3g support. However, a binary copy of wimlib that was compiled without libntfs-3g support need not be affected by the libntfs-3g license (for example).