Open-Source Licenses

Effective 20 May 2026 · Open3D Viewer

Open3D Viewer is built with the help of excellent open-source software. We are grateful to the maintainers and contributors of every project below. Each is used under its own licence; this page lists the principal components.

Framework

• Flutter & Dart — UI framework and language. © Google. BSD-3-Clause License.

3D rendering

• three.js — JavaScript 3D library used to render STL, OBJ, PLY, 3MF and FBX files, including its STL/OBJ/PLY/3MF/FBX loaders and STL/GLTF exporters. © three.js authors. MIT License.
• fflate — compression library used by the FBX and 3MF loaders. © Arjun Barrett. MIT License.
• model_viewer_plus — Flutter wrapper around Google's <model-viewer> web component, used to display GLB, GLTF and USDZ files and to launch augmented-reality preview. BSD-3-Clause License.
• <model-viewer> — web component by Google for rendering 3D models. © Google. Apache License 2.0.

Flutter packages

• flutter_inappwebview — in-app web view hosting the 3D engine. Apache License 2.0.
• file_picker — native file selection. MIT License.
• receive_sharing_intent — receives files shared into the app. Apache License 2.0.
• image — pure-Dart image processing, used for GIF encoding and app-icon generation. Apache License 2.0 / MIT License.
• flutter_svg — SVG rendering. MIT License.
• google_fonts — runtime font loading. Apache License 2.0.
• share_plus, path_provider, shared_preferences, url_launcher, permission_handler, in_app_purchase — platform utilities. BSD-3-Clause / MIT Licenses.
• vector_math — vector and matrix mathematics. © Google. BSD-3-Clause License.
• shelf & shelf_router — lightweight local HTTP serving. © Dart authors. BSD-3-Clause License.
• screenshot — widget capture. MIT License.
• image_gallery_saver_plus — saving images to the device gallery. MIT License.
• app_tracking_transparency — iOS tracking-permission prompt. MIT License.

Advertising & payments

• Google Mobile Ads SDK (AdMob) — advertising in the free version, via the google_mobile_ads Flutter plugin. © Google. Used under the Google APIs Terms of Service and the AdMob terms.
• App Store / Google Play in-app purchase — provided by Apple and Google under their respective platform terms.

Augmented reality

• Apple ARKit / AR Quick Look — iOS augmented-reality preview. © Apple Inc.
• Google Scene Viewer / ARCore — Android augmented-reality preview. © Google.

Typography

• Inter — interface typeface by Rasmus Andersson. SIL Open Font License 1.1.
• JetBrains Mono — monospaced typeface by JetBrains. SIL Open Font License 1.1.

Sample models

Any 3D models bundled as in-app samples are used under their respective licences, with attribution provided where the licence requires it. Sample models remain the property of their original authors.

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Full licence texts are available from each project's official repository. If you believe an attribution is missing or incorrect, please contact konatalarajesh1@gmail.com and we will correct it.

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