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WiredTiger licensing

The complete WiredTiger software package is Open Source software: you are welcome to modify and redistribute it under the terms of version 2 or version 3 of the GNU General Public License as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.

Additionally, portions of the WiredTiger distribution are distributed under the terms of the BSD-3-Clause License. These files have BSD-3-Clause License copyright notices, and may be freely used and redistributed under the terms of that notice.

Additionally, portions of the WiredTiger distribution are public domain software. Public domain files have notices releasing the software into the public domain and may be freely used and redistributed.

For a license to use the WiredTiger software under conditions other than those described above, or for technical support for this software, please contact MongoDB, Inc. at info@.nosp@m.wire.nosp@m.dtige.nosp@m.r.co.nosp@m.m.

3rd party software always included in the WiredTiger library

Every build of the WiredTiger library binary includes the following 3rd party software, distributed under separate license terms. Redistribution of the WiredTiger library should comply with these copyrights.

Distribution FilesCopyright HolderLicense
src/include/bitstring.i University of California, BerkeleyBSD-3-Clause License
src/include/queue.h University of California, BerkeleyBSD-3-Clause License
src/os_posix/os_getopt.c University of California, BerkeleyBSD-3-Clause License
src/support/hash_city.c Google, Inc.The MIT License
src/support/hash_fnv.c AuthorsPublic Domain

3rd party software optionally included in the WiredTiger library: PPC64

PPC64 and PPC64LE builds of the WiredTiger library binary include additional 3rd party software, distributed under separate license terms. Redistribution of the WiredTiger library PPC64 and PPC64LE builds should comply with these copyrights.

Distribution FilesCopyright HolderLicense
src/support/power8/* Anton Blanchard, IBM Corp.Apache License, Version 2.0 or the GNU General Public License, version 2 or later

3rd party software optionally included in the WiredTiger library: s390x

IBM z13 processor builds of the WiredTiger library binary include additional 3rd party software, distributed under separate license terms. Redistribution of the WiredTiger library z13 builds should comply with these copyrights.

Distribution FilesCopyright HolderLicense
src/support/zseries/* IBM Corp.Apache License, Version 2.0 or the GNU General Public License, version 2 or later

3rd party software optionally included in the WiredTiger library: LevelDB

If the –enable-leveldb configuration option is specified when configuring the WiredTiger build, additional 3rd party software is included in the WiredTiger library binary, distributed under separate license terms. Redistribution of the WiredTiger library built with the –enable-leveldb configuration option should comply with these copyrights.

Distribution FilesCopyright HolderLicense
api/leveldb/basho/* Basho Technologies, Inc.Apache License, Version 2.0
api/leveldb/hyperleveldb/* The HyperLevelDB AuthorsBSD-3-Clause License
api/leveldb/leveldb/* Google, Inc.BSD-3-Clause License
api/leveldb/rocksdb/* Facebook, Inc.BSD-3-Clause License

3rd party software included in the WiredTiger distribution

The WiredTiger software distribution includes additional 3rd party software licensed under a variety of licenses. This software is NOT included in the WiredTiger library binary as built by the distribution. This software is used for peripheral tasks, such as building the WiredTiger documentation, testing the WiredTiger software or graphically displaying WiredTiger run-time output. If you extract portions of the WiredTiger software distribution for inclusion in other packages, or redistribute selected portions of the WiredTiger sources, please review the copyright notices and LICENSE files included in the WiredTiger distribution for the terms and conditions of such redistribution.