OAuth 2.0 Playground announced

Google announced the OAuth 2.0 Playground, which simplifies experimentation with the OAuth 2.0 protocol and APIs that use the protocol. Trying out some requests in the OAuth 2.0 playground can help understand how the protocol functions and make life easier when the time comes to use OAuth in your own code.

Source: Google Apps Developer Blog - OAuth 2.0 Playground: Open to Developers!