Firebug for Firefox a scale down tool

Http watch is currently used in two ways

 

1)Application Performance measuring tool with and without bigip in the field for Proof Of Concept(POC)

 

2)and as a Trouble shooting tool for web application when developing iRules

 

 

Http watch is not a free tool and hence most of the end users/partner SE cannot use this and relies on F5 FSE for the same

 

 

Where I wanted to check if firebug can be an alternative to HTTP watch