Carl and Richard talk to Anthony van der Hoorn and Nik Molnar about their open source project called Glimpse. Glimpse provides instrumentation for the server and client side components of your web app, displaying it in a tabular format at the bottom of your browser. Anthony and Nik discuss the extensiblity model allowing additional components to be instrumented with Glimpse - and how they've only built five of the thirty packages available today! This is open source at its best, and an awesome way to understand what is happening in your web application.