1.Hackbar : This is best tool for hacking sql vunerable website all Pro hackers using this tool to injecting website.
Download Link : Hackbar
2.Tamper data : This tool is Using tamperdata to view and modify HTTP/HTTPS headers and post parameters.
Download Link : Tamper Data
3.User Agent Switcher : User Agent add on helps in spoofing the browser while performing some attacks.
Download Link : User Agent Switcher
Note : This all tool is Only for Security & educational purposes, Do not use to Hack any personal liability