From PyTorch:

Copyright (c) 2016-     Facebook, Inc            (Adam Paszke)
Copyright (c) 2014-     Facebook, Inc            (Soumith Chintala)
Copyright (c) 2011-2014 Idiap Research Institute (Ronan Collobert)
Copyright (c) 2012-2014 Deepmind Technologies    (Koray Kavukcuoglu)
Copyright (c) 2011-2012 NEC Laboratories America (Koray Kavukcuoglu)
Copyright (c) 2011-2013 NYU                      (Clement Farabet)
Copyright (c) 2006-2010 NEC Laboratories America (Ronan Collobert, Leon Bottou, Iain Melvin, Jason Weston)
Copyright (c) 2006      Idiap Research Institute (Samy Bengio)
Copyright (c) 2001-2004 Idiap Research Institute (Ronan Collobert, Samy Bengio, Johnny Mariethoz)

From Caffe2:

Copyright (c) 2016-present, Facebook Inc. All rights reserved.

All contributions by Facebook:
Copyright (c) 2016 Facebook Inc.

All contributions by Google:
Copyright (c) 2015 Google Inc.
All rights reserved.

All contributions by Yangqing Jia:
Copyright (c) 2015 Yangqing Jia
All rights reserved.

All contributions by Kakao Brain:
Copyright 2019-2020 Kakao Brain

All contributions from Caffe:
Copyright(c) 2013, 2014, 2015, the respective contributors
All rights reserved.

All other contributions:
Copyright(c) 2015, 2016 the respective contributors
All rights reserved.

Caffe2 uses a copyright model similar to Caffe: each contributor holds
copyright over their contributions to Caffe2. The project versioning records
all such contribution and copyright details. If a contributor wants to further
mark their specific copyright on a particular contribution, they should
indicate their copyright solely in the commit message of the change when it is
committed.

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

3. Neither the names of Facebook, Deepmind Technologies, NYU, NEC Laboratories America
   and IDIAP Research Institute nor the names of its contributors may be
   used to endorse or promote products derived from this software without
   specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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POSSIBILITY OF SUCH DAMAGE.


The Pytorch repository and source distributions bundle several libraries that are 
compatibly licensed.  We list these here.

Name: FP16
License: MIT
Files: third_party/FP16
  For details, see third_party/FP16/LICENSE

Name: FXdiv
License: MIT
Files: third_party/FXdiv
  For details, see third_party/FXdiv/LICENSE

Name: NNPACK
License: BSD-2-Clause
Files: third_party/NNPACK
  For details, see third_party/NNPACK/LICENSE

Name: QNNPACK
License: BSD-3-Clause
Files: third_party/QNNPACK
  For details, see third_party/QNNPACK/LICENSE

Name: XNNPACK
License: BSD-3-Clause
Files: third_party/XNNPACK
  For details, see third_party/XNNPACK/LICENSE

Name: benchmark
License: Apache-2.0
Files: third_party/benchmark,
     third_party/protobuf/third_party/benchmark,
     third_party/onnx-tensorrt/third_party/onnx/third_party/benchmark,
     third_party/onnx/third_party/benchmark
  For details, see third_party/benchmark/LICENSE,
     third_party/protobuf/third_party/benchmark/LICENSE,
     third_party/onnx-tensorrt/third_party/onnx/third_party/benchmark/LICENSE,
     third_party/onnx/third_party/benchmark/LICENSE

Name: clog
License: BSD-2-Clause
Files: third_party/cpuinfo/deps/clog,
     third_party/fbgemm/third_party/cpuinfo/deps/clog,
     third_party/QNNPACK/deps/clog
  For details, see third_party/cpuinfo/deps/clog/LICENSE,
     third_party/fbgemm/third_party/cpuinfo/deps/clog/LICENSE,
     third_party/QNNPACK/deps/clog/LICENSE

Name: cpuinfo
License: BSD-2-Clause
Files: third_party/cpuinfo,
     third_party/fbgemm/third_party/cpuinfo
  For details, see third_party/cpuinfo/LICENSE,
     third_party/fbgemm/third_party/cpuinfo/LICENSE

Name: eigen
License: BSD-3-Clause
Files: third_party/eigen
  For details, see third_party/eigen/COPYING.BSD

Name: enum
License: BSD-3-Clause
Files: third_party/python-enum/enum
  For details, see third_party/python-enum/enum/LICENSE

Name: fbgemm
License: BSD-3-Clause
Files: third_party/fbgemm
  For details, see third_party/fbgemm/LICENSE

Name: fmt
License: MIT with exception
Files: third_party/kineto/libkineto/third_party/fmt,
     third_party/fmt
  For details, see third_party/kineto/libkineto/third_party/fmt/LICENSE.rst,
     third_party/fmt/LICENSE.rst

Name: foxi
License: MIT
Files: third_party/foxi
  For details, see third_party/foxi/LICENSE

Name: gemmlowp
License: Apache-2.0
Files: third_party/gemmlowp/gemmlowp
  For details, see third_party/gemmlowp/gemmlowp/LICENSE

Name: generator
License: Apache-2.0
Files: third_party/kineto/libkineto/third_party/googletest/googlemock/scripts/generator,
     third_party/googletest/googlemock/scripts/generator,
     third_party/fbgemm/third_party/googletest/googlemock/scripts/generator,
     third_party/protobuf/third_party/googletest/googlemock/scripts/generator,
     third_party/tensorpipe/third_party/googletest/googlemock/scripts/generator
  For details, see third_party/kineto/libkineto/third_party/googletest/googlemock/scripts/generator/LICENSE,
     third_party/googletest/googlemock/scripts/generator/LICENSE,
     third_party/fbgemm/third_party/googletest/googlemock/scripts/generator/LICENSE,
     third_party/protobuf/third_party/googletest/googlemock/scripts/generator/LICENSE,
     third_party/tensorpipe/third_party/googletest/googlemock/scripts/generator/LICENSE

Name: gloo
License: BSD-3-Clause
Files: third_party/gloo
  For details, see third_party/gloo/LICENSE

Name: googlemock
License: BSD-3-Clause
Files: third_party/kineto/libkineto/third_party/googletest/googlemock,
     third_party/googletest/googlemock,
     third_party/fbgemm/third_party/googletest/googlemock,
     third_party/protobuf/third_party/googletest/googlemock,
     third_party/tensorpipe/third_party/googletest/googlemock
  For details, see third_party/kineto/libkineto/third_party/googletest/googlemock/LICENSE,
     third_party/googletest/googlemock/LICENSE,
     third_party/fbgemm/third_party/googletest/googlemock/LICENSE,
     third_party/protobuf/third_party/googletest/googlemock/LICENSE,
     third_party/tensorpipe/third_party/googletest/googlemock/LICENSE

Name: googletest
License: BSD-3-Clause
Files: third_party/kineto/libkineto/third_party/googletest,
     third_party/kineto/libkineto/third_party/googletest/googletest,
     third_party/googletest,
     third_party/googletest/googletest,
     third_party/fbgemm/third_party/googletest,
     third_party/fbgemm/third_party/googletest/googletest,
     third_party/protobuf/third_party/googletest,
     third_party/protobuf/third_party/googletest/googletest,
     third_party/tensorpipe/third_party/googletest,
     third_party/tensorpipe/third_party/googletest/googletest
  For details, see third_party/kineto/libkineto/third_party/googletest/LICENSE,
     third_party/kineto/libkineto/third_party/googletest/googletest/LICENSE,
     third_party/googletest/LICENSE,
     third_party/googletest/googletest/LICENSE,
     third_party/fbgemm/third_party/googletest/LICENSE,
     third_party/fbgemm/third_party/googletest/googletest/LICENSE,
     third_party/protobuf/third_party/googletest/LICENSE,
     third_party/protobuf/third_party/googletest/googletest/LICENSE,
     third_party/tensorpipe/third_party/googletest/LICENSE,
     third_party/tensorpipe/third_party/googletest/googletest/LICENSE

Name: gtest
License: BSD-3-Clause
Files: third_party/ideep/mkl-dnn/tests/gtests/gtest
  For details, see third_party/ideep/mkl-dnn/tests/gtests/gtest/LICENSE

Name: ideep
License: MIT
Files: third_party/ideep
  For details, see third_party/ideep/LICENSE

Name: ios-cmake
License: BSD-3-Clause
Files: third_party/ios-cmake
  For details, see third_party/ios-cmake/LICENSE

Name: kineto
License: BSD-3-Clause
Files: third_party/kineto
  For details, see third_party/kineto/LICENSE

Name: libnop
License: Apache-2.0
Files: third_party/tensorpipe/third_party/libnop
  For details, see third_party/tensorpipe/third_party/libnop/LICENSE

Name: libuv
License: MIT
Files: third_party/tensorpipe/third_party/libuv
  For details, see third_party/tensorpipe/third_party/libuv/LICENSE

Name: miniz-2.0.8
License: MIT
Files: third_party/miniz-2.0.8
  For details, see third_party/miniz-2.0.8/LICENSE

Name: mkl-dnn
License: Apache-2.0
Files: third_party/ideep/mkl-dnn
  For details, see third_party/ideep/mkl-dnn/LICENSE

Name: nccl
License: BSD-3-Clause
Files: third_party/nccl/nccl
  For details, see third_party/nccl/nccl/LICENSE.txt

Name: neon2sse
License: BSD-Source-Code
Files: third_party/neon2sse
  For details, see third_party/neon2sse/LICENSE

Name: onnx
License: MIT
Files: third_party/onnx-tensorrt/third_party/onnx,
     third_party/onnx
  For details, see third_party/onnx-tensorrt/third_party/onnx/LICENSE,
     third_party/onnx/LICENSE

Name: onnx-tensorrt
License: MIT
Files: third_party/onnx-tensorrt
  For details, see third_party/onnx-tensorrt/LICENSE

Name: protobuf
License: BSD-3-Clause
Files: third_party/protobuf
  For details, see third_party/protobuf/LICENSE

Name: psimd
License: MIT
Files: third_party/psimd
  For details, see third_party/psimd/LICENSE

Name: pthreadpool
License: BSD-2-Clause
Files: third_party/pthreadpool
  For details, see third_party/pthreadpool/LICENSE

Name: pybind11
License: BSD-3-Clause
Files: third_party/pybind11,
     third_party/onnx-tensorrt/third_party/onnx/third_party/pybind11,
     third_party/onnx/third_party/pybind11,
     third_party/tensorpipe/third_party/pybind11
  For details, see third_party/pybind11/LICENSE,
     third_party/onnx-tensorrt/third_party/onnx/third_party/pybind11/LICENSE,
     third_party/onnx/third_party/pybind11/LICENSE,
     third_party/tensorpipe/third_party/pybind11/LICENSE

Name: python-peachpy
License: BSD-2-Clause
Files: third_party/python-peachpy
  For details, see third_party/python-peachpy/LICENSE.rst

Name: python-six
License: MIT
Files: third_party/python-six
  For details, see third_party/python-six/LICENSE

Name: sleef
License: BSL-1.0
Files: third_party/sleef
  For details, see third_party/sleef/LICENSE.txt

Name: tbb
License: Apache-2.0
Files: third_party/tbb
  For details, see third_party/tbb/LICENSE

Name: tensorpipe
License: BSD-3-Clause
Files: third_party/tensorpipe
  For details, see third_party/tensorpipe/LICENSE.txt

Name: zstd
License: BSD-3-Clause
Files: third_party/zstd
  For details, see third_party/zstd/LICENSE