When I tried to analyze about the best performing browser, I got to know that there are around 30 web browsers [may be more] with noticable user base. Navigate to List of web browsers at Wikipedia for complete listing.
There is one more article at Wikipedia showing Comparison of Browsers for general and technical features. This article doesn’t give any comparison for the second most important feature, speed. [I’m considering security as first].
I personally feel that Opera out played every browser in the game. At least at Windows if not on Linux and other grounds. The only problem is the rendering problem we face while browsing the sites designed specific to IE.
I suggest Avant Browser for guys like me who have to browse the sites designed for IE during application development. This browser is a must have shell created over Trident layout engine. Trident is the layout engine for the Microsoft Windows version of Internet Explorer.
Though not related to this post, I would append one more fact to this post. This may be new to you too that even IE is not developed in Microsoft. Like lots of other applications, they bought the browser from ouside too.
Opera 9.0 Preview 2 is now available for download
PS: Though I used Opera earlier, I thank Amit for turning me back to this excellent browser.