Open source
GoodWin VPN is developed in the open. The client, docs, and tooling live in one repository.
Repository
github.com/AlexGalitsky/goodwin-vpn-client
Licenses
Application source is available on GitHub. Third-party and native engine licenses are shown in the app: Settings → About → Licenses.
What this is not
Publishing the client as open source does not mean Goodwin operates exit nodes for you. You import a configuration for a server you control or received from an operator.