Firefox has been my Web browser of choice for years (let's not talk about my rebellious Opera days) The best part about Firefox at work, of course, is that once it's installed you don't need to be an administrator to add extensions to it, saving you and the IT guys a lot of hassle. There's a few extensions that I've really come to lean on at work, cutting down on repetitive, time-consuming tasks when I'm researching or preparing presentations.