# ChaptarrNG Copyright & Attribution

ChaptarrNG is free software, licensed under the **GNU General Public License, version 3**.
See the [LICENSE](LICENSE) file for the full license text. Source code for the
maintained fork is published in this repository.

## Copyright

- Copyright © 2026 Snapetech and SeerrNG contributors for ChaptarrNG fork-specific changes.
- Copyright © 2026 Chaptarr contributors for inherited Chaptarr changes.
- Portions copyright © 2010–2026 the Servarr team and contributors.

Upstream copyright notices are preserved throughout the source code in accordance
with the GPL.

## Lineage & Attribution

ChaptarrNG is a fork of [Chaptarr](https://github.com/Chaptarr/chaptarr), which
is itself a fork of [Readarr](https://github.com/Readarr/Readarr), an eBook and
audiobook manager from the [Servarr](https://wiki.servarr.com/) project family.
Readarr is built on the shared codebase behind
[Sonarr](https://github.com/Sonarr/Sonarr),
[Radarr](https://github.com/Radarr/Radarr),
[Lidarr](https://github.com/Lidarr/Lidarr), and
[Prowlarr](https://github.com/Prowlarr/Prowlarr).

ChaptarrNG would not exist without the work by Chaptarr, Readarr, and the
Servarr team and contributors. We are grateful for it.

## Not Affiliated With Servarr

ChaptarrNG is independently maintained. It is **not affiliated with,
endorsed by, or supported by** the Servarr team or the Readarr, Sonarr, Radarr,
Lidarr, or Prowlarr projects. Please direct ChaptarrNG support requests to
this repository.

## AI Development Disclosure

ChaptarrNG is developed and maintained with the assistance of AI tools.

## Third-Party Components

ChaptarrNG's optional audiobook conversion shells out to external tools that are
bundled in the **ChaptarrNG Docker image** — they are not part of this
source tree. Each remains under its own license:

| Component | License | Source |
|---|---|---|
| m4b-tool (by sandreas) | MIT | https://github.com/sandreas/m4b-tool |
| FFmpeg | LGPL-2.1-or-later (portions GPL, depending on build) | https://ffmpeg.org/ |
| mp4v2 | MPL-1.1 | https://github.com/enzo1982/mp4v2 |

m4b-tool is a PHP application and runs under the PHP runtime provided by the image.

## Trademarks

All product names, logos, and brands are the property of their respective owners.
Use of them does not imply any affiliation with or endorsement by them.