mOAuth

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:

- User account authentication/authorization using PAM
- Traditional web-based authorization grants with redirection as well as
resource owner password credentials grants
- Token introspection for services
- Basic Resource Server functionality with implicit and explicit ACLs
- Customizable web interface