Firebug
IMacros for Chrome v.1.1.1
iMacros for Chrome is like a swiss army knife for Google Chrome: It can be used as form filler on steroids, highly-secure password manager (256-bit AES encryption) or as easy web testing tool.
Debugbar v.5.11
Debugbar is a toolbar for Internet Explorer that enables web developers to inspect the content of a web page. It includes a DOM inspector, Javascript inspector, HTTP headers viewer and a HTML validation tool.
Absolute load control v.0.13
absolute load control is a Firefox extension, can reload Firefox tabs differently, it add a context menu to stop/reload for more fine grained control over page loading. 1. shift+leftClick/middleClick: reload from memory 2. control+leftClick: reload