---
title: "Third-Party Notices"
---

> Documentation Index
> Fetch the complete documentation index at: https://openarkstudio.github.io/arknet/llms.txt
> Use this file to discover all available pages before exploring further.

# Third-Party Notices

## Bundled Reed–Solomon Engine

`include/arknet/thirdparty/fecpp.hpp` adapts [fecpp](https://github.com/randombit/fecpp)
at commit `d7e9b41eaaab3c605be36f282465210d17bc432f` as a portable C++20 header-only
engine. Copyright (c) 1997–1998 Luigi Rizzo, 2009–2010 Jack Lloyd, and 2011 Billy
Brumley is retained. The BSD-2-Clause license is installed alongside the header
as `include/arknet/thirdparty/fecpp.LICENSE`. The unchanged pinned source in
`tests/vendor/fecpp/` is an independent parity/recovery reference, with its license.

## External Asio and TLS Dependencies

Standalone Asio and official Boost are external dependencies, selected by the
build configuration. Their distributions contain the applicable BSL-1.0
notices. OpenSSL is an optional TLS dependency, licensed under Apache-2.0 for
3.x and the OpenSSL/SSLeay licenses for 1.1.1. Consult the actual distribution.

`ports/asio` downloads the official standalone Asio 1.38.2 distribution with a
pinned checksum; its BSL-1.0 license is installed with the dependency.

## Development and Documentation Dependencies

`tests/vendor/doctest/doctest.h` is doctest 2.5.3, copyright (c) 2016-2023
Viktor Kirilov, under the MIT License preserved in
`tests/vendor/doctest/LICENSE.txt`. It is used only by development tests.

`tests/vendor/kcp/ikcp.c` and `ikcp.h` are the canonical KCP implementation
at commit `b1a7a2101dcbb96017681a500d6b82bbe5a88766`, copyright (c) 2017
Lin Wei (skywind3000), under the MIT license retained in `tests/vendor/kcp/LICENSE`.
They are independent interoperability test references, not runtime dependencies
or installed headers. The C++ ARQ core is maintained by OpenArkStudio under BSL-1.0.

The documentation uses [Cloudflare Nimbus](https://github.com/cloudflare/nimbus)
0.17.0 and its 0.7.11 starter, copyright (c) 2025 Cloudflare, Inc., under MIT.
The starter license is preserved in [docs/site/LICENSE](https://github.com/OpenArkStudio/arknet/blob/main/docs/site/LICENSE).
Astro, Tailwind CSS, Pagefind and the Markdown tooling are build dependencies;
their applicable licenses are distributed with the locked npm packages.
The optional local report generator uses
[Matplotlib](https://matplotlib.org/stable/project/license.html).
These tools do not become networking-library dependencies.

Source: https://openarkstudio.github.io/arknet/project/third-party-notices/index.mdx