We must count our blessings, first we get a brand new Microsoft Internet Explorer, IE9, and now Mozilla is releasing Firefox 4.0.
What's new in Firefox 4.0? Well much like Internet Explorer 9, the tabs have been placed at the top. Also like Internet Explorer 9, the "File", "Edit", "View", etc... buttons have been replace by a single button. In Firefox 4 it is the "Firefox" button. And according to Mozilla, Firefox 4.0 is 3 to 6 times faster than its predecessor, Firefox 3.6.
Please note that Google's Chrome already had the tabs at the top and minimal buttons. We now have a serious war among web browsers, this reminds me of the Nestcape vs. Internet Explorer days. We have not even talked about Apple's Safari or Opera.
I would highly recommend Firefox 4, click here for the update.
Update: Lifehacker.com has released speed tests on Chrome, IE9, Firefox, and Opera, check it out here.