… definitely is Mozilla Firefox . IE just sucks and I only use it when finally checking if an application also works fine with IE.
There are a lot of very useful addons for developing with Firefox:
|FireShot||Very nice tool for screenshots of current page contents.|
|Web Developer||Web developer tools.|
|Tamper Data||Tamper form data before finally submitting. I really love that one!|
|YSlow||Find out why your website is soooo f***ing slow.|
|Live Http Headers||View HTTP headers of a page and while browsing.|