Passport is an authentication middleware for Node.js. Extremely flexible and modular, Passport can be unobtrusively dropped in to any Connect/Express-based web application.

It provides a comprehensive set of authentication systems: using a username and password, social networks credentials, OpenID, and more.

This package only provides the general framework and the "session" authorization strategy: other systems are packaged separately, please install the ones you need.

Node.js is an event-based server-side javascript engine.