Most reading this post are using Internet Explorer (IE for brevity) on a Windows PC to "surf the net." Those using a Mac are probably using Safari. But there are other choices, and they all have their strengths. I use IE often, but sometimes I need some of the features that Firefox provides. While Opera has less third party support (available add-ons), it offers some really nice features and is one of my favorites.
Here are some links to other browsers. All are available on both the PC and the Mac.
BTW, if you have hot yet upgraded to IEv8, you should, but wait a week. Next week I will explain the options offered the first time you start IEv8 (or at least tell you how I think you should answer the questions).