mOAuth is a basic OAuth 2.0 client/server implementation that is geared towards testing and development of OAuth-based services. The client library supports authorization of native macOS, iOS, and Linux applications with PKCE.
The server is both an Authorization Server and a Resource Server that supports:
mOAuth currently requires CUPS for its HTTPS support.
mOAuth is licensed under the Apache License Version 2.0 with an exception to allow linking against GPL2/LGPL2 software (like older versions of CUPS).