Mozilla Firebird 0.6 has been released a few days ago. Firebird is the new name for the phoenix project, but, as next versions of Mozilla will be based on this branch, it is likely that Firebird will soon be renamed again (probably -and simply!- Mozilla Browser).

Firebird is certainly the best browser available today!

The standalone equivalent mail application, thunderbird, can also be downloaded, but I will wait a little before using it (I need at least GnuPG support, which is not yet included). Thunderbird will be the official mail application for Mozilla too, and will probably be renamed too (Mozilla Mail?)