A great extension for analyze your magento shop and a better overview about magento shop code.
Make your life easier and spend less time on searching
Professional magento developer toolbar with profiling, database queries, handles, event/observer overview, block nesting, requests and caching.Community Edition: 1.4.x - 1.9.x
The Mgt Developer Toolbar for magento is very useful for all developers and frontend guys.
Many professional developers all over the world use this extension to find possible performance bottlenecks.
You have an overview of the parse time, memory consumption and number of queries executed.
It also gives you information about the Controller, Module and Action which is responsible for the current request.
The advantage for frontend guys should also be mentioned, you get a complete overview how the blocks are rendered and which templates are used. This makes all block and template changes easier than ever before.
Give it a try, you will never ever work without this developer toolbar!