nlohmann/json (inst/include/nlohmann/json.hpp)
Copyright (c) 2013-2022 Niels Lohmann
License: MIT
https://github.com/nlohmann/json

webview (src/webview/webview.h)
Copyright (c) 2017 Serge Zaitsev
License: MIT
https://github.com/webview/webview

WebView2 SDK (src/webview2_sdk/)
Copyright (c) Microsoft Corporation
License: BSD-style (see src/webview2_sdk/LICENSE)
https://developer.microsoft.com/microsoft-edge/webview2/