Hummingbird lets you see how visitors are interacting with your website in real time. And by “real time” they don’t mean it refreshes every 5 minutes – WebSockets enable Hummingbird to update 20 times per second. Hummingbird is built on top of Node.js, a new javascript web toolkit that can handle large amounts of traffic and many concurrent users.

However, please note that Hummingbird is pre-alpha software. While it shouldn’t screw up your production environment, it’s definitely not yet production ready. In fact, they are still in the process of extracting it from the original app. So check it out, but don’t expect it to fulfill your greatest desires yet.

Requirements: node.js v0.1.96, mongodb
Demo: http://mnutt.github.com/hummingbird/
License: MIT License