Meteor JavaScript framework blurs the line between client and server

Meteor is a full-stack JavaScript framework that aims to deliver the same development experience on the client and the server. The project’s seven principles include:

One Language. Write both the client and the server parts of your interface in JavaScript.

Database Everywhere. Use the same transparent API to access your database from the client or the server.

Meteor appears to be an eclectic blend of proven solutions, using Handlebars for templating and its own package manager to pull in other dependencies.

Check out the introductory screencast and well done project docs for more.