FnordMetric is a highly configurable (and pretty fast) realtime app/event tracking dashboard based on ruby eventmachine and redis. You define your own plotting and counting functions as ruby blocks.
FnordMetric gives you a live dashboard, that shows who is using your app in realtime. You can select a single user and follow them step by step as well. Best of all, it’s free for download and you can install it on your own server.
License: License Free