I have seen many articles which compare Selenium (1 or 2) with QTP (or other commercial tools). But these articles miss very basic point that Selenium is a library available in variety of language while QTP has entire gamut of tools with it. So if you were to really compare QTP with Selenium then comparison should be based on the library of languages which is offered either of these tools, which in my opinion Selenium wins outright over QTP. My only intention of writing this post is not claim Selenium victory of QTP but to demonstrate how badly Selenium is compared with QTP at times. There might be things QTP would be good at doing (I left QTP long ago hence can not name any) but to disregard Selenium on the factors I listed herein is highly biased. Object spying - Sure, you have QTP recorder which does it for you but don't forget that you can test object locator using Selenium IDE and it is not limited to using only Selenium IDE. Firebug with Firefox can be used