OAuth2 OOB server framework
A lightweight OAuth2 server framework that provides a flexible API without locking users down to specific frameworks.
This package was designed with device authorization in mind (and not external website authorization). No capacity for redirects exists; all redirectURIs are "urn:ietf:wg:oauth:2.0:oob" for compatibility with libraries designed to handle Google OAuth2.
Database support includes NeDB.
MongoDB support is planned at some point.
You can build your own driver relatively easy, too - look at how the nedb storage driver is designed, it's fairly simple.
MIT license - copyright (c) 2013 Damian Bushong