Examples of Salesforce Lightning Components
Node.js and AngularJs based Query Builder for Salesforce using OAuth2 and REST API
Salesforce Oauth Flows
This application demonstrates database operations using PostgreSQL as a database, Heroku as platform, Node.js as language and Angularjs as javascript based MVC.
How to use Lightning component in node.js (External websites) by using Lightning Out. It shows how to enable CORS and SSL in Node.js with Video and complete source code.
Boiler plate for Salesforce and Node.js application