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Open‑Source Software Credits & Licence Summary

Component / Project

Role in Our Product

Primary Licence

Up‑stream URL (plain text)

Modified Sunshine

Host-side capture/encode/stream

GPL-3.0-only

https://github.com/Tencent/gws-polarlight-sunshine

Gleam (fork of Moonlight‑Qt)

Cross‑platform streaming client

GPL‑3.0‑only

https://github.com/Tencent/gws-polarlight-moonlight

moonlight‑common‑c

NVIDIA GameStream protocol core

GPL-3.0-only

https://github.com/moonlight-stream/moonlight-common-c

XLang

Host‑side scripting / automation

Apache‑2.0

https://github.com/xlang-foundation/xlang

Qt 5/6

Gleam GUI & cross‑platform abstraction

LGPL‑3.0‑only (or GPL‑3.0)

https://qt.io

FFmpeg

Audio / video codecs & muxers

LGPL‑2.1‑or‑later or GPL‑3.0 (build choice)

https://ffmpeg.org

OpenSSL

TLS / cryptography

Dual Apache‑2.0 / OpenSSL

https://www.openssl.org

cURL / libcurl

HTTP(S) client

curl licence (MIT style)

https://curl.se

libopus

Opus audio codec

BSD-like

https://opus-codec.org

miniUPnPc

UPnP/NAT-PMP

BSD‑3‑Clause

http://miniupnp.free.fr/

nv‑codec‑headers

NVENC / NVDEC SDK headers

MIT

https://github.com/FFmpeg/nv-codec-headers

NVFBC headers

NVIDIA Frame Buffer Capture API

NVIDIA custom permissive

https://github.com/LizardByte/Sunshine/tree/master/third-party/nvfbc

glad

OpenGL / GLES loader

MIT

https://glad.dav1d.de

Simple‑Web‑Server

Embedded HTTP server (pairing UI)

MIT

https://gitlab.com/eidheim/Simple-Web-Server

TPCircularBuffer

Lock-free ring buffer (audio)

BSD

https://github.com/michaeltyson/TPCircularBuffer

tray

System tray helper

MIT

https://github.com/LizardByte/tray

ViGEmClient (Windows)

Virtual game-pad device

MIT

https://github.com/ViGEm/ViGEmClient

wayland-protocols

Extra Wayland protocol XMLs

MIT

https://gitlab.freedesktop.org/wayland/wayland-protocols

nanors

Tiny C++ thread helpers

MIT

https://github.com/sleepybishop/nanors

AntiHooking

Windows anti‑tamper shim (Gleam)

MIT

https://github.com/Tencent/gws-polarlight-moonlight/tree/main/AntiHooking

h264bitstream

H.264 SPS/PPS parser (Gleam)

LGPL-2.1

https://github.com/aizvorski/h264bitstream

qmdnsengine

mDNS / Bonjour discovery (Gleam)

LGPL-2.1

https://github.com/cgutman/qmdnsengine

soundio

Cross-platform audio I/O (Gleam)

ISC

https://github.com/andrewrk/libsoundio

Other utility sub‑modules (googletest, SDL_GameControllerDB, etc.)

Build helpers, controller maps

MIT / BSD / Public Domain

see Sunshine & Gleam repos