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Intu AI · Intuition Education

Software licences

Intu AI is built with open-source software. Each third-party component stays under its own licence, and the notices those licences require are reproduced below. Questions: hello@intu.com.au.

Third-party notices

# Third-party notices

Intu AI includes or uses third-party components governed by their own licence terms.
Those terms apply to the relevant components independently of Intu AI's own terms.

The resolved Ruby and JavaScript dependency manifests are `Gemfile.lock` and
`package-lock.json`. Copyright, licence and NOTICE files shipped inside an installed gem,
npm package, operating-system package or base image must be retained with that
component. The browser code we serve from our own origin (`vendor/javascript`) is checked
by `script/audit_licenses`; see `docs/third-party-licenses.md`. The same notices are
published at `/licences`.

## Flowbite

The user interface loads Flowbite 4.0.2 (vendor/javascript/flowbite.js) and its
Tailwind plugin and component styles.

MIT License

Copyright (c) 2023 Bergside Inc.

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.

## Apache ECharts, ZRender and tslib

The charts (Study stats, account and dashboard progress charts, admin usage) use a custom build of Apache ECharts 6.1.0, bundled with ZRender
6.1.0 and tslib 2.3.0 into `vendor/javascript/echarts.js` by `script/build_echarts`.
The built file retains the components' licence comments.

Apache ECharts is licensed under the Apache License, Version 2.0:
https://www.apache.org/licenses/LICENSE-2.0. Its NOTICE file reads:

```
Apache ECharts
Copyright 2017-2026 The Apache Software Foundation

This product includes software developed at
The Apache Software Foundation (https://www.apache.org/).
```

ZRender is licensed under the BSD 3-Clause License:

```
BSD 3-Clause License

Copyright (c) 2017, Baidu Inc.
All rights reserved.

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

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

* 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.

* 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.
```

tslib is Copyright (c) Microsoft Corporation, licensed under the BSD Zero Clause
License (0BSD): https://github.com/microsoft/tslib/blob/main/LICENSE.txt

## Other browser components

| Component | Licence | Use |
|---|---|---|
| Hotwire Turbo and Stimulus 3.2.2, Rails Action Cable and Active Storage | MIT | Page navigation, controllers, live updates, uploads |
| JSXGraph 1.10.0 | LGPL-3.0-or-later OR MIT (used under MIT) | Interactive geometry and graphs |
| MathJax 3.2.2 / 4.0.0 | Apache-2.0 | Maths typesetting |
| Mermaid 11 (jsDelivr) | MIT | Diagrams and mind maps |
| PDF.js 6.4.299 (jsDelivr) | Apache-2.0 | In-app PDF viewer |
| FingerprintJS 3 (jsDelivr) | MIT | Device signal at sign-up |
| AppSignal JavaScript 1.6.1 | MIT | Front-end error reporting |
| Newsreader, Hanken Grotesk (Google Fonts) | SIL Open Font License 1.1 | Typography |

## Removed: ApexCharts

The charts used ApexCharts until 2026-11-01. ApexCharts stopped being open source at
5.1.0: its free licence only covers organisations under US$2M in revenue, budget or
funding. It was replaced with the Apache ECharts build above and must not be
reintroduced (`test/config/no_apexcharts_test.rb`, `script/audit_licenses`).