nCombo

nCombo allows developers to build fast, rich, data-driven applications based on Node.js. It uses HTTP for file delivery and the WebSocket protocol for data communication, and has an innovative architecture that allows you to call server-side functions from JavaScript on the client. Server-side functions can return multiple times at various intervals and thereby provide streams of data to clients. The use of a number of popular existing technologies minimizes the learning curve. It also includes the ability to embed JavaScript files in a tree-like structure and add custom middleware much like in other Node.js frameworks, session management, and global data management that lets you store data to share between all sessions/clients: the server can emit events and you can specify which clients will be notified using unique session IDs.