Mozilla just released Firefox 4 for PC and as of writing more than 16-Million downloads already and Android will join the craze too! Firefox for Android and Maemo devices, also reached the release candidate stage this means that the final version is coming soon. The release candidate is a fully functional browser. However, Firefox for Android does not support flash. This browser can compete with other Android browsers, it has no longer those performance bugs and hogs.
The side panel is the most notable and nifty feature of this browser for easy switching of pages like the tabs on its PC counterpart.