Web diagnostics for Sitecore
What Firebug does for client-side debugging, Glimpse does for server-side debugging. It provides the best view into the inner workings of your application in the server while remaining easy to install, configure and use.
To find out more about what Glimpse itself is take a look at the Glimpse Wiki on GitHub.
Glimpse gathers detailed diagnostic information about the behaviour and execution of your web application. It collects information on the server with each page request and, before the response is sent, formats that data and sends it as JSON to the client.
Two additional custom tabs have been added to display Sitecore information relating to the request.
Sitecore Analytics tab
You will see something like the following when you open the Sitecore tab: The full path to the Sitecore Item that the URL resolved to is shown, with the name of the Template that it is based upon shown in brackets. Below that there are two sections, Item and Context. Both of these can be drilled into by clicking on the [+] symbols. The Item section which contains information on the resolved Sitecore Item, it's Template and Visualization properties is expanded by default as this is where users will typically want to start exploring the diagnostics exposed by Sitecore.Glimpse.
This tab displays information gathered by the Sitecore Experience Platform.