# VRGS Third-Party Licences VRGS incorporates the third-party software listed below. This document is shipped alongside `VRGS.exe` and installed by the VRGS setup package. Last reviewed: 2026-08-06. Sources for this list: `vcpkg.json` and the resolved SPDX metadata in `vcpkg_installed/`, the linker inputs and NuGet `packages.config` of `VRGS2020/dsl.vcxproj`, the redistributables staged by `VRGSSetupProject/Product.wxs`, and the vendored sources and web/model assets under `VRGS2020/`. Component versions are those current at the review date; the licences apply to whichever version is actually shipped. --- ## 1. Summary table ### 1.1 Geospatial and coordinate systems | Library | Purpose in VRGS | Licence | |---|---|---| | PROJ 9.7.1 | Coordinate reference system definition and transformation | MIT | | EPSG Geodetic Parameter Dataset (in `proj.db`) | CRS/datum parameters used by PROJ | EPSG Terms of Use (attribution required) | | libgeotiff 1.7.4 | GeoTIFF georeferencing tag read/write | MIT | | libtiff 4.7.1 | TIFF raster import/export | libtiff (BSD-style) | | Shapelib 1.6.2 | ESRI Shapefile import and export | MIT (dual MIT / LGPL-2.0-or-later; used under MIT) | | libLAS 1.8.1 | LAS point cloud reading | BSD-3-Clause | | LASzip 3.5.0 | LAZ compressed point cloud codec | Apache-2.0 | | Cesium Native | 3D Tiles / glTF streaming, Cesium ion terrain and imagery | Apache-2.0 | | S2 Geometry | Spherical geometry indexing (via Cesium Native) | Apache-2.0 | ### 1.2 Point clouds, meshes and geometry | Library | Purpose in VRGS | Licence | |---|---|---| | Point Cloud Library (PCL) 1.15.1 | Point cloud filters, search, surface reconstruction | BSD-3-Clause | | Eigen 5.0.1 | Linear algebra used throughout analysis and solvers | MPL-2.0 | | nanoflann 1.9.0 | Header-only kd-tree nearest-neighbour queries | BSD-3-Clause | | FLANN | Approximate nearest neighbour search (via PCL) | BSD-3-Clause | | Qhull 8.0.2 | Convex hull and Delaunay triangulation (via PCL) | Qhull licence | | CDT 1.4.4 | Constrained Delaunay triangulation | MPL-2.0 | | poly2tri | Polygon triangulation (via PCL) | BSD-3-Clause | | Clipper (polyclipping) 6.4.2 | Polygon boolean operations | Boost Software Licence 1.0 | | xatlas | UV atlas generation for photo texture baking (vendored in `VRGS2020/xatlas`) | MIT | | meshoptimizer | Mesh optimisation (via Cesium Native) | MIT | | Draco 1.5.7 | Mesh and point cloud compression | Apache-2.0 | | SPZ | Gaussian splat compression (via Cesium Native) | MIT | | Open Asset Import Library (Assimp) 6.0.4 | 3D model import and export | BSD-3-Clause | | libE57 Reference Implementation 1.1.332 | E57 point cloud import/export | Boost Software Licence 1.0 | | METIS | Graph partitioning (via Ceres / PCL) | Apache-2.0 | ### 1.3 Rendering | Library | Purpose in VRGS | Licence | |---|---|---| | Vulkan-Headers / Vulkan-Loader 1.4.335 | Vulkan rendering backend | Apache-2.0 (headers dual Apache-2.0 / MIT) | | volk 1.4.335 | Vulkan function meta-loader | MIT | | Vulkan Memory Allocator 3.3.0 | GPU memory allocation | MIT | | GLEW 2.3.1 | OpenGL extension loading (legacy OpenGL renderer) | BSD-3-Clause / MIT | | OpenGL Mathematics (GLM) 1.0.3 | Vector and matrix maths | MIT and The Happy Bunny Licence | | OpenXR Loader 1.1.54 | VR / XR headset and controller support | Apache-2.0 | | KTX-Software (libktx) | KTX2 / Basis texture transcoding (via Cesium Native) | Apache-2.0 | | libsquish 1.15 | DXT texture block compression | MIT | | stb | Image loading helpers (via Cesium Native / OpenCV) | MIT / public domain (CC-PDDC) | | NVIDIA Texture Tools 3 | GPU-accelerated texture compression | Commercial (NVIDIA licence agreement) | ### 1.4 Imaging, computer vision and structure-from-motion | Library | Purpose in VRGS | Licence | |---|---|---| | OpenCV 4.12.0 | Image processing, feature detection, calibration, video I/O | Apache-2.0 | | libjpeg-turbo 3.1.3 | JPEG encode/decode | BSD-3-Clause (with IJG and zlib terms) | | libpng 1.6.55 | PNG encode/decode | libpng-2.0 | | libwebp 1.6.0 | WebP encode/decode | BSD-3-Clause | | OpenJPEG 2.5.4 | JPEG 2000 encode/decode | BSD-2-Clause | | Ceres Solver 2.2.0 | Bundle adjustment and non-linear least squares | Apache-2.0 | | OpenBLAS 0.3.29 | BLAS / LAPACK kernels | BSD-3-Clause | | gflags 2.3.0 | Command-line flags (via Ceres) | BSD-3-Clause | | glog 0.7.1 | Logging (via Ceres) | BSD-3-Clause | | quirc 1.2 | QR code detection (via OpenCV) | ISC | ### 1.5 Machine learning and AI | Library | Purpose in VRGS | Licence | |---|---|---| | ONNX Runtime (GPU) 1.25.1 | Neural network inference for segmentation, MVS and embeddings | MIT | | NVIDIA CUDA runtime, cuBLAS, cuFFT, cuDNN 9 | GPU execution provider for ONNX Runtime | NVIDIA proprietary redistributable (CUDA / cuDNN EULA) | | FAISS 1.13.2 | Vector similarity search for in-application help retrieval | MIT | | FlatBuffers | Serialisation (via ONNX Runtime / MediaPipe) | Apache-2.0 | ### 1.6 Networking, serialisation and data | Library | Purpose in VRGS | Licence | |---|---|---| | libcurl 8.18.0 | HTTP/HTTPS client for tile, licence and LLM services | curl licence (MIT-style; also BSD-3-Clause and ISC parts) | | OpenSSL 3.6.1 | TLS and cryptography | Apache-2.0 | | Mozilla CA certificate bundle (`cacert.pem`, `curl-ca-bundle.crt`) | Root certificates for TLS verification | MPL-2.0 | | Mbed TLS 3.6.4 | TLS (via IXWebSocket) | Apache-2.0 (dual Apache-2.0 / GPL-2.0-or-later) | | IXWebSocket 11.4.6 | WebSocket client for Virtual Field Trip sessions | BSD-3-Clause | | Boost 1.90.0 (Beast, Filesystem, Graph, System and dependencies) | HTTP/WebSocket, filesystem and graph algorithms | Boost Software Licence 1.0 | | Asio 1.32.0 | Asynchronous I/O | Boost Software Licence 1.0 | | Protocol Buffers 6.33.4 | Virtual Field Trip message serialisation | BSD-3-Clause | | Abseil 20250814 | Support library for Protocol Buffers and Cesium Native | Apache-2.0 | | JSON for Modern C++ (nlohmann/json) 3.12.0 | JSON parsing and generation | MIT | | RapidJSON | JSON parsing (via Cesium Native) | MIT | | JsonCpp 1.9.6 | JSON parsing (via transitive dependencies) | MIT | | pugixml 1.15 | XML parsing | MIT | | Xerces-C++ 3.3.0 | XML parsing for LandXML and related formats | Apache-2.0 | | SQLite 3.51.2 | Project database and help index | Public domain | | libzip 1.11.4 | ZIP archive read/write | BSD-3-Clause | | kubazip 0.3.6 | ZIP archive support (via Assimp) | MIT | | minizip 1.3.1 | ZIP archive support (transitive) | zlib | | zlib 1.3.1 / zlib-ng 2.3.3 | Deflate compression | zlib | | Zstandard 1.5.7 | Compression (transitive) | BSD-3-Clause (dual BSD-3 / GPL-2.0) | | LZ4 1.10.0 | Compression (transitive) | BSD-2-Clause | | Brotli 1.2.0 | Compression for web and tile transport | MIT | | bzip2 1.0.8 | Compression (transitive) | bzip2-1.0.6 (BSD-style) | | XZ Utils (liblzma) 5.8.2 | Compression (transitive) | 0BSD / public domain | | {fmt} | String formatting (via Cesium Native) | MIT | | spdlog | Logging (via Cesium Native) | MIT | | Async++ | Task scheduling (via Cesium Native) | MIT | | ada | URL parsing (via Cesium Native) | Apache-2.0 / MIT | | modp_b64 | Base64 encoding (via Cesium Native) | BSD-3-Clause | | UTF8-CPP 4.0.9 | UTF-8 handling | Boost Software Licence 1.0 | | utf8_range | UTF-8 validation (via Protocol Buffers) | MIT | | HTML Tidy 5.8.0 | HTML clean-up and pretty printing | W3C-style permissive licence | | Sentry Native 0.13.0 | Crash reporting and diagnostics | MIT | | miniaudio 0.11.24 | Microphone capture and audio playback for voice chat | Public domain (Unlicense) or MIT-0 | | Opus 1.5.2 | Voice codec for Virtual Field Trip audio | BSD-3-Clause | | Python 3.13 (embedded) | In-application Python scripting console | Python Software Foundation Licence 2.0 | ### 1.7 User interface and platform | Component | Purpose in VRGS | Licence | |---|---|---| | BCGControlBar Pro 33.20 (BCGSoft) | Ribbon, docking panes, property grid and visual themes | Commercial (BCGSoft licence agreement) | | Microsoft Edge WebView2 SDK 1.0.3912.50 | Embedded browser for chat, editor and map panels | Microsoft proprietary (redistributable) | | C++/WinRT 2.0.250303.1 | Windows Runtime projection | MIT | | Windows Implementation Library (WIL) 1.0.260126.7 | Windows API helpers | MIT | | marked 15.0.12 | Markdown rendering in web panels | MIT | | CodeMirror 6 | Python script editor component | MIT | | Tiptap 2 and ProseMirror | Rich text editor component | MIT | | Leaflet 1.9.4 | Interactive map panel | BSD-2-Clause | | Leaflet.markercluster 1.5.3 | Map marker clustering | MIT | ### 1.8 Licensing and activation (commercial) | Component | Purpose in VRGS | Licence | |---|---|---| | LicenseSpring SDK | Product activation and licence enforcement | Commercial (LicenseSpring licence agreement) | | Reprise License Manager (RLM) 16.0 | Floating and network licence management | Commercial (Reprise Software licence agreement) | ### 1.9 Machine learning models redistributed with VRGS | Model | Purpose in VRGS | Licence | |---|---|---| | BGE-small-en-v1.5 (ONNX) | Text embeddings for in-application help search | MIT | | SkyWater-Seg (SegFormer-B2, ONNX) | Sky masking for dense multi-view stereo | MIT (see `SkyWater-Seg.txt`) | | MediaPipe Selfie Segmenter (landscape, TFLite) and MediaPipe Tasks Vision 1.0.1 | Camera background blur in the Virtual Field Trip tile | Apache-2.0 (see `MediaPipe-Selfie.txt`) | Full notices for the SkyWater and MediaPipe assets are shipped as separate files next to this document. ### 1.10 Models downloaded on demand (not redistributed) The following models are **not** included in the VRGS installer. They are fetched at runtime from the VRGS model catalogue when the corresponding feature is first used, and remain subject to their publishers' terms: | Model | Purpose in VRGS | Publisher terms | |---|---|---| | Segment Anything Model 2.1 (tiny / small / base+ / large, ONNX) | Interactive image segmentation | Meta Platforms; SAM 2.1 is published under Apache-2.0 | | Segment Anything Model 3 (ONNX) | Promptable concept segmentation | Meta Platforms; consult the publisher's model licence before redistributing | | CasMVSNet (ONNX) | Learned multi-view stereo depth estimation | Consult the publisher's model licence before redistributing | | VRGS fracture segmentation (U-Net / ResNet-34, ONNX) | Fracture trace detection | Trained by VRGeoscience; derived from an ImageNet-pretrained ResNet-34 backbone | > **Note for future redistribution.** If any of these models is ever moved into > the installer, its licence must be confirmed and recorded in section 1.9 > first. The SAM 3, CasMVSNet and fracture-model rows above have not been > verified for redistribution. --- ## 2. Licence texts The remainder of this document reproduces the licence texts required by the components above. Where several components share an identical licence, the text appears once and the applicable copyright notices are listed with it. --- ### 2.1 Apache Licence, Version 2.0 Applies to: Cesium Native, S2 Geometry, KTX-Software, ada (dual-licensed), Abseil, OpenCV, Ceres Solver, Draco, LASzip, OpenXR Loader, Vulkan-Loader, Vulkan-Headers (dual-licensed), Xerces-C++, OpenSSL 3.x, Mbed TLS (dual-licensed), METIS, FlatBuffers, MediaPipe Tasks Vision and the MediaPipe Selfie Segmenter model. ``` Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. 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You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS ``` --- ### 2.2 MIT Licence Applies to the components below. Each retains its own copyright notice; the permission text that follows is common to all of them. - PROJ -- Copyright (c) 2000, Frank Warmerdam and contributors - libgeotiff -- Copyright (c) 1999, Frank Warmerdam - Shapelib -- Copyright (c) 1998-2012, Frank Warmerdam; (c) 2012-2024, Even Rouault - OpenGL Mathematics (GLM) -- Copyright (c) 2005-2024, G-Truc Creation (see also section 2.9) - JSON for Modern C++ -- Copyright (c) 2013-2025, Niels Lohmann - RapidJSON -- Copyright (c) 2015, THL A29 Limited, a Tencent company, and Milo Yip - JsonCpp -- Copyright (c) 2007-2010, Baptiste Lepilleur and contributors - pugixml -- Copyright (c) 2006-2025, Arseny Kapoulkine - xatlas -- Copyright (c) 2018-2020, Jonathan Young - meshoptimizer -- Copyright (c) 2016-2025, Arseny Kapoulkine - SPZ -- Copyright (c) 2024, Niantic, Inc. - volk -- Copyright (c) 2018-2025, Arseny Kapoulkine - Vulkan Memory Allocator -- Copyright (c) 2017-2025, Advanced Micro Devices, Inc. - libsquish -- Copyright (c) 2006, Simon Brown - Brotli -- Copyright (c) 2009-2020, the Brotli Authors - kubazip -- Copyright (c) 2014-2021, Kuba Podgorski and contributors - {fmt} -- Copyright (c) 2012-2025, Victor Zverovich and contributors - spdlog -- Copyright (c) 2016-2025, Gabi Melman - Async++ -- Copyright (c) 2015, Amanieu d'Antras - ada -- Copyright (c) 2023-2025, the ada authors (dual Apache-2.0 / MIT) - utf8_range -- Copyright (c) 2022, Google LLC - FAISS -- Copyright (c) Meta Platforms, Inc. and affiliates - ONNX Runtime -- Copyright (c) Microsoft Corporation - C++/WinRT -- Copyright (c) Microsoft Corporation - Windows Implementation Library (WIL) -- Copyright (c) Microsoft Corporation - Sentry Native -- Copyright (c) 2019-2025, Functional Software, Inc. dba Sentry - stb -- Copyright (c) 2017, Sean Barrett (dual MIT / public domain) - miniaudio -- Copyright (c) 2025, David Reid (dual Unlicense / MIT-0; see section 2.13) - marked -- Copyright (c) 2011-2025, Christopher Jeffrey - CodeMirror 6 -- Copyright (c) by Marijn Haverbeke and others - Tiptap -- Copyright (c) 2023-2025, Tiptap GmbH - ProseMirror -- Copyright (c) by Marijn Haverbeke and others - Leaflet.markercluster -- Copyright (c) 2012, David Leaver - BGE-small-en-v1.5 model -- Copyright (c) Beijing Academy of Artificial Intelligence - SkyWater-Seg model -- see `SkyWater-Seg.txt` ``` Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ``` --- ### 2.3 BSD 3-Clause Licence Applies to the components below. Each retains its own copyright notice; the conditions that follow are common to all of them. - Open Asset Import Library (Assimp) -- Copyright (c) 2006-2025, assimp team. All rights reserved. - Point Cloud Library (PCL) -- Copyright (c) 2010-2025, Open Perception, Inc. and contributors. All rights reserved. - FLANN -- Copyright (c) 2008-2011, Marius Muja and David G. Lowe. All rights reserved. - poly2tri -- Copyright (c) 2009-2023, Poly2Tri Contributors. All rights reserved. - nanoflann -- Copyright (c) 2008-2009, Marius Muja and David G. Lowe; (c) 2011-2025, Jose Luis Blanco Claraco. All rights reserved. - libLAS -- Copyright (c) 2007, Martin Isenburg; (c) 2008, Howard Butler; and contributors. All rights reserved. - libzip -- Copyright (c) 1999-2024, Dieter Baron and Thomas Klausner. All rights reserved. - OpenBLAS -- Copyright (c) 2011-2025, The OpenBLAS Project. All rights reserved. - gflags -- Copyright (c) 2006, Google Inc. All rights reserved. - glog -- Copyright (c) 2008, Google Inc. All rights reserved. - Protocol Buffers -- Copyright (c) 2008, Google Inc. All rights reserved. - modp_b64 -- Copyright (c) 2005-2016, Nick Galbreath. All rights reserved. - libwebp -- Copyright (c) 2010, Google Inc. All rights reserved. - libjpeg-turbo -- Copyright (c) 2009-2025, D. R. Commander and contributors. All rights reserved. - Zstandard -- Copyright (c) Meta Platforms, Inc. and affiliates. All rights reserved. - Opus -- Copyright (c) 2001-2023, Xiph.Org, Skype Limited, Octasic, Jean-Marc Valin, Timothy B. Terriberry, CSIRO, Gregory Maxwell, Mark Borgerding and Erik de Castro Lopo. All rights reserved. - IXWebSocket -- Copyright (c) 2018-2025, Machine Zone, Inc. and Benjamin Sergeant. All rights reserved. - GLEW -- Copyright (c) 2008-2016, Nigel Stewart; (c) 2002-2008, Milan Ikits; (c) 2002-2008, Marcelo E. Magallon; (c) 2002, Lev Povalahev. 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 name of the copyright holder 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 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ``` Note: the GLEW licence additionally permits use of the author's name only with prior written permission, and portions of GLEW are also available under the MIT licence. --- ### 2.4 BSD 2-Clause Licence Applies to: - OpenJPEG -- Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium; (c) 2002-2014, Professor Benoit Macq; (c) 2003-2014, Antonin Descampe; (c) 2003-2009, Francois-Olivier Devaux; (c) 2005, Herve Drolon, FreeImage Team; (c) 2002-2003, Yannick Verschueren; (c) 2001-2003, David Janssens; (c) 2011-2012, Centre National d'Etudes Spatiales (CNES), France; (c) 2012, CS Systemes d'Information, France. All rights reserved. - LZ4 -- Copyright (c) 2011-2020, Yann Collet. All rights reserved. - Leaflet -- Copyright (c) 2010-2023, Volodymyr Agafonkin; (c) 2010-2011, CloudMade. All rights reserved. The copyright in the OpenJPEG software is made available under the 2-clause BSD licence below. That software may be subject to other third-party and contributor rights, including patent rights, and no such rights are granted under this licence. ``` 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. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ``` --- ### 2.5 Boost Software Licence, Version 1.0 Applies to: Boost C++ Libraries, Asio, Clipper (polyclipping), UTF8-CPP, and the libE57 Reference Implementation (Copyright 2009-2010 Kevin Ackley). ``` Boost Software License - Version 1.0 - August 17th, 2003 Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the software and accompanying documentation covered by this license (the "Software") to use, reproduce, display, distribute, execute, and transmit the Software, and to prepare derivative works of the Software, and to permit third-parties to whom the Software is furnished to do so, all subject to the following: The copyright notices in the Software and this entire statement, including the above license grant, this restriction and the following disclaimer, must be included in all copies of the Software, in whole or in part, and all derivative works of the Software, unless such copies or derivative works are solely in the form of machine-executable object code generated by a source language processor. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ``` --- ### 2.6 Mozilla Public Licence, Version 2.0 Applies to: Eigen, CDT, and the Mozilla CA certificate bundle shipped as `cacert.pem` and `curl-ca-bundle.crt`. These components are used unmodified and are linked or loaded as separate works. Their source is available from the upstream projects: - Eigen -- https://eigen.tuxfamily.org/ and https://gitlab.com/libeigen/eigen - CDT -- https://github.com/artem-ogre/CDT - Mozilla CA certificate store -- https://wiki.mozilla.org/CA and https://curl.se/docs/caextract.html ``` This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/. ``` The complete text of the Mozilla Public Licence, Version 2.0, is available at https://mozilla.org/MPL/2.0/. VRGeoscience will supply a copy of the source code for these components on request. --- ### 2.7 zlib Licence Applies to: zlib (Copyright (c) 1995-2024, Jean-loup Gailly and Mark Adler), zlib-ng (Copyright (c) 1995-2024, zlib-ng contributors), and minizip (Copyright (c) 1998-2010, Gilles Vollant and contributors). ``` This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. ``` --- ### 2.8 libcurl Licence ``` Copyright (c) 1996 - 2025, Daniel Stenberg, , and many contributors, see the THANKS file. All rights reserved. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of a copyright holder shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization of the copyright holder. ``` Portions of libcurl are additionally covered by BSD-3-Clause and ISC terms; see the upstream `COPYING` file at https://curl.se/docs/copyright.html. --- ### 2.9 OpenGL Mathematics (GLM) -- The Happy Bunny Licence GLM is licensed under both The Happy Bunny Licence and the MIT Licence. The MIT text appears in section 2.2. The Happy Bunny variant is reproduced here. ``` The Happy Bunny License (Modified MIT License) Copyright (c) 2005 - 2024 G-Truc Creation Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. Restrictions: By making use of the Software for military purposes, you choose to make a Bunny unhappy. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ``` --- ### 2.10 libtiff Licence ``` Copyright (c) 1988-1997 Sam Leffler Copyright (c) 1991-1997 Silicon Graphics, Inc. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that (i) the above copyright notices and this permission notice appear in all copies of the software and related documentation, and (ii) the names of Sam Leffler and Silicon Graphics may not be used in any advertising or publicity relating to the software without the specific, prior written permission of Sam Leffler and Silicon Graphics. THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ``` --- ### 2.11 libpng Licence (libpng-2.0) ``` Copyright (c) 1995-2024 The PNG Reference Library Authors. Copyright (c) 2018-2024 Cosmin Truta. Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson. Copyright (c) 1996-1997 Andreas Dilger. Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. The software is supplied "as is", without warranty of any kind, express or implied, including, without limitation, the warranties of merchantability, fitness for a particular purpose, title, and non-infringement. In no event shall the Copyright owners, or anyone distributing the software, be liable for any damages or other liability, whether in contract, tort or otherwise, arising from, out of, or in connection with the software, or the use or other dealings in the software, even if advised of the possibility of such damage. Permission is hereby granted to use, copy, modify, and distribute this software, or portions hereof, for any purpose, without fee, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated, but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This Copyright notice may not be removed or altered from any source or altered source distribution. ``` --- ### 2.12 SQLite -- public domain ``` SQLite is in the public domain: https://www.sqlite.org/copyright.html Anyone is free to copy, modify, publish, use, compile, sell, or distribute the original SQLite code, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means. ``` --- ### 2.13 miniaudio -- public domain (Unlicense) or MIT-0 miniaudio is dual-licensed. VRGS relies on the public domain option. ``` This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means. In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ``` --- ### 2.14 XZ Utils (liblzma) -- 0BSD / public domain ``` Copyright (c) The XZ Utils authors and contributors Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ``` Some parts of XZ Utils are in the public domain; see the upstream `COPYING` file for the per-file breakdown. --- ### 2.15 bzip2 Licence ``` Copyright (C) 1996-2019 Julian R Seward. 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. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 3. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 4. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ``` --- ### 2.16 Qhull Licence ``` Qhull, Copyright (c) 1993-2020 C.B. Barber Arlington, MA and The National Science and Technology Research Center for Computation and Visualization of Geometric Structures (The Geometry Center) University of Minnesota email: qhull@qhull.org This software includes Qhull from C.B. Barber and The Geometry Center. Files derived from Qhull 1.0 are copyrighted by the Geometry Center. The remaining files are copyrighted by C.B. Barber. Qhull is free software and may be obtained via http from www.qhull.org. It may be freely copied, modified, and redistributed under the following conditions: 1. All copyright notices must remain intact in all files. 2. A copy of this text file must be distributed along with any copies of Qhull that you redistribute; this includes copies that you have modified, or copies of programs or other software products that include Qhull. 3. If you modify Qhull, you must include a notice giving the name of the person performing the modification, the date of modification, and the reason for such modification. 4. When distributing modified versions of Qhull, or other software products that include Qhull, you must provide notice that the original source code for Qhull is available from www.qhull.org. 5. There is no warranty or other guarantee of fitness for Qhull, it is provided solely "as is". Bug reports or fixes may be sent to qhull_bug@qhull.org; the authors may or may not act on them as they desire. ``` --- ### 2.17 HTML Tidy ``` HTML Tidy -- HTML parser and pretty printer https://github.com/htacg/tidy-html5 Copyright (c) 1998-2016 World Wide Web Consortium (Massachusetts Institute of Technology, European Research Consortium for Informatics and Mathematics, Keio University). All Rights Reserved. Additional contributions (c) 2001-2016 University of Toronto, Terry Teague, @geoffmcl, HTACG, and others. Contributing Author(s): Dave Raggett COPYRIGHT NOTICE: This software and documentation is provided "as is," and the copyright holders and contributing author(s) make no representations or warranties, express or implied, including but not limited to, warranties of merchantability or fitness for any particular purpose or that the use of the software or documentation will not infringe any third party patents, copyrights, trademarks or other rights. The copyright holders and contributing author(s) will not be held liable for any direct, indirect, special or consequential damages arising out of any use of the software or documentation, even if advised of the possibility of such damage. Permission is hereby granted to use, copy, modify, and distribute this source code, or portions hereof, documentation and executables, for any purpose, without fee, subject to the following restrictions: 1. The origin of this source code must not be misrepresented. 2. Altered versions must be plainly marked as such and must not be misrepresented as being the original source. 3. This Copyright notice may not be removed or altered from any source or altered source distribution. The copyright holders and contributing author(s) specifically permit, without fee, and encourage the use of this source code as a component for supporting the Hypertext Markup Language in commercial products. If you use this source code in a product, acknowledgement is not required but would be appreciated. ``` --- ### 2.18 Python Software Foundation Licence VRGS embeds CPython 3.13 to provide the in-application scripting console. ``` Copyright (c) 2001-2025 Python Software Foundation. All rights reserved. Python is distributed under the PSF License Agreement, Version 2. The complete text is available at https://docs.python.org/3/license.html and in the LICENSE file distributed with the Python runtime. ``` --- ### 2.19 EPSG Geodetic Parameter Dataset The `proj.db` file distributed with VRGS embeds the EPSG Geodetic Parameter Dataset. ``` The EPSG Dataset is owned by IOGP and is provided subject to the EPSG Terms of Use: https://epsg.org/terms-of-use.html IOGP holds the copyright in the EPSG Dataset. Use of the data is subject to attribution of IOGP as the source, and IOGP accepts no liability arising from its use. ``` --- ### 2.20 Commercial and proprietary components The following components are used under commercial licence agreements or proprietary redistribution terms. Their source code is not distributed with VRGS, and no rights in them are granted to VRGS users beyond use as part of VRGS. | Component | Supplier | Terms | |---|---|---| | BCGControlBar Pro | BCGSoft Ltd. | Commercial developer licence; runtime redistribution permitted under that agreement | | LicenseSpring SDK | LicenseSpring (Cense Data Inc.) | Commercial subscription agreement | | Reprise License Manager (RLM) | Reprise Software, Inc. | Commercial ISV licence | | NVIDIA Texture Tools 3 | NVIDIA Corporation | NVIDIA software licence agreement | | CUDA Runtime, cuBLAS, cuFFT | NVIDIA Corporation | NVIDIA CUDA Toolkit EULA (redistributable components) | | cuDNN 9 | NVIDIA Corporation | NVIDIA cuDNN Software Licence Agreement | | Microsoft Edge WebView2 SDK and Runtime | Microsoft Corporation | Microsoft Software Licence Terms for WebView2 | --- ## 3. Maintaining this document When a dependency is added, removed or upgraded, update both the summary table and, if a new licence family is introduced, section 2. Authoritative sources to check: - `vcpkg.json` -- declared vcpkg dependencies. - `vcpkg_installed/x64-windows/x64-windows/share//vcpkg.spdx.json` -- resolved version and SPDX licence for every port, including transitive ones. - `VRGS2020/dsl.vcxproj` -- `AdditionalDependencies` for the `Release|x64` configuration (the shipping build), `AdditionalIncludeDirectories` for headers taken from `ExternalLibs`, and the `` items that determine which redistributables are copied next to `VRGS.exe`. - `VRGS2020/packages.config` -- NuGet packages. - `VRGSSetupProject/Product.wxs` -- everything the installer actually ships. - `build-tools/*/package.json` -- npm dependencies bundled into the web assets under `VRGS2020/Assets`. - `VRGS2020/VRGS_ml/catalog.json` -- machine learning models fetched at runtime. Components removed at the 2026-08-06 review, having become unreferenced: the Esri File Geodatabase API (call sites commented out and no longer linked) and CrashRpt (superseded by Sentry Native). The Oculus PC SDK (LibOVR) survives only in legacy Win32 configurations that are no longer built; XR support is provided through the OpenXR loader.