# Licenses

---

The application is distributed under the
[GPLv3+ license](https://www.gnu.org/licenses/gpl-3.0.en.html), or any later
version.

```text
Dn-FamiTracker - NES/Famicom sound tracker
Copyright (C) 2020-2026 D.P.C.M.
FamiTracker Copyright (C) 2005-2020 Jonathan Liss
0CC-FamiTracker Copyright (C) 2014-2018 HertzDevil

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see https://www.gnu.org/licenses/.
```

## Tracker source code and libraries

The tracker source code is distributed under the
[GPLv3+ license](https://www.gnu.org/licenses/gpl-3.0.html), or any later
version.

- FamiTracker
	- Copyright (C) 2005-2020 Jonathan Liss
	- Licensed under
	  [GPLv2](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html), or any
	  later version.
- 0CC-FamiTracker
	- Copyright (C) 2014-2018 HertzDevil
	- Licensed under
	  [GPLv2](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html), or any
	  later version.
- NSFPlay
	- Copyright (C) 2006 Brezza, 2012-2026 Brad Smith
	- Used under an
	  [informal license](https://github.com/bbbradsmith/nsfplay/blob/master/readme.txt).
- VRC7/OPLL sound emulator from
  [emu2413](https://github.com/digital-sound-antiques/emu2413) v1.5.9
	- Copyright (C) 2001-2022 Mitsutaka Okazaki
	- Licensed under the [MIT license](https://mit-license.org/).
- Sunsoft 5B PSG sound emulator from
  [emu2149](https://github.com/digital-sound-antiques/emu2149) v1.42
	- Copyright (C) 2001-2022 Mitsutaka Okazaki
	- Licensed under the [MIT license](https://mit-license.org/).
- FDS and N163 sound emulator from [Mesen](https://github.com/SourMesen/Mesen2)
	- Copyright (C) 2014-2025 Sour
	- Licensed under
	  [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html), or any
	  later version.
- [Blip_buffer](https://www.slack.net/~ant/libs/audio.html#Blip_Buffer) 0.4.1
	- Copyright (C) 2003-2006 Shay Green
	- Licensed under
	  [LGPLv2.1](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html)
	- modified by nyanpasu64
- [Free FFT and convolution](https://www.nayuki.io/page/free-small-fft-in-multiple-languages) (C++)
	- Copyright (C) 2017 Project Nayuki
	- Licensed under the
	  [MIT license](https://mit-license.org/).
- [JSON for Modern C++](https://github.com/nlohmann/json/)
	- Copyright (C) 2013-2024 Niels Lohmann <https://nlohmann.me>
	- Licensed under the [MIT license](https://mit-license.org/).
- [libsamplerate](https://github.com/libsndfile/libsamplerate)
	- Copyright (C) 2012-2016, Erik de Castro Lopo <erikd@mega-nerd.com>.
	  All rights reserved.
	- Licensed under the
	  [BSD-2-Clause license](https://www.freebsd.org/copyright/freebsd-license/).

## NSF driver source code

Dn-FT NSF driver modifications are under [MIT-0](LICENSE-MIT-0.txt). More details can be found
[in the NSF driver source's license](https://github.com/Dn-Programming-Core-Management/Dn-FamiTracker/blob/main/Source/drivers/asm/LICENSE.md).