Firefox is a one of the famous web browser around the world. It supports 80+ languages around the world in india supports local languages also. Firefox supports windows, Mac and Linux computers it includes huge collection of add-ons for more feature. firefox recently introduce this official version of 5.01 and now they introduce new version 6.0 beta users only for testing. So soonly they will publish this version officially.
Are you eager to download and use this version see below
For English(us) version
windows- Firefox 6.0 beta
Mac - Firefox 6.0 beta
Linux - Firefox 6.0 beta
For more beta versions go to this link and download your version