How about Trello? It uses Node.js for the back-end update processing and event handling. http://blog.fogcreek.com/the-trello-tech-stack/ http://blog.fogcreek.co

How about Trello? It uses Node.js for the back-end update processing and event handling. http://blog.fogcreek.com/the-trello-tech-stack/ http://blog.fogcreek.com/the-trello-tech-stack/