Firefox
My Internet DomainThe Tools I use...Local ApplicationsBrowsersFirefox 
Firefox is the Internet browser that I use most frequently.  Many web tools only offer Firefox plugins.  I like Firefox's ease of use, tabbed browsing, most of all the acceptance it has earned from the web2.0 community.  Although our district does not support the use of this browser, (to my understanding that means they will not install or support this browser) I have been told that individuals may download and install it.  With the recent introduction of IE7, which is very much like Firefox, I doubt we will see this policy change in the near future. If you are interested you can download Firefox here.