# Third-party licenses

Sfotty Pie itself is MIT-licensed. The replacement firmware ROMs and the UI icons bundled with this web app keep their own licenses, reproduced below. (These are independent works — bundling them does not relicense Sfotty Pie's own code.)

Sfotty Pie is an independent project and is not affiliated with or endorsed by Atari, the Altirra project (Avery Lee), or the Atari++ project (Thomas Richter).

User-supplied ROMs and any images in the local library are not covered here; they belong to their respective owners.

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## AltirraOS (400/800 and XL/XE/XEGS) and Altirra BASIC

Copyright (C) 2008–2016 Avery Lee (AltirraOS kernel)
Copyright (C) 2014–2016 Avery Lee, All Rights Reserved (Altirra BASIC)

These are clean-room replacements for the Atari OS and Atari BASIC, distributed with the Altirra emulator. The firmware is offered under the FSF all-permissive license (note from the source headers):

> Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without any warranty.

Bundled items: `AltirraOS 400-800`, `AltirraOS XL-XE`, `Altirra BASIC`.

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## Atari++ OS (os++) and Atari++ BASIC (Basic++)

Copyright (C) THOR Software, Thomas Richter.

These are replacements for the Atari OS and Atari BASIC, distributed with the Atari++ emulator, under the **THOR Public License (TPL)** — a near-verbatim variant of the Mozilla Public License 1.1 (it binds modifications to Thomas Richter and is governed by German law).

Per the TPL, the corresponding source code is made available here:

- License text: [THOR-Public-License.txt](atari++/THOR-Public-License.txt)
- os++ source: [os++.tar.gz](atari++/os++.tar.gz)
- Basic++ source: [basic++.tar.gz](atari++/basic++.tar.gz)

Bundled items: `Atari++ OS`, `Atari++ BASIC`. The ROMs here are distributed unmodified; any modifications would be subject to the TPL.

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## Lucide icons

The UI icons are from [Lucide](https://lucide.dev), embedded in the app's icon sprite. Lucide is offered under the **ISC license**:

> ISC License
>
> Copyright (c) for portions of Lucide are held by Cole Bemis 2013-2022 as part of Feather (MIT). All other copyright (c) for Lucide are held by Lucide Contributors 2022.
>
> Permission to use, copy, modify, and/or 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" 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.