SeaMonkey 1.0 Alpha was released last week. Users of the Mozilla Suite or Netscape should check it out - it contains numerous new features and bugfixes when compared to Mozilla 1.7, but offers the same basic look and feel. There are a few screenshots on the SeaMonkey blog showing off some of the features.
For those who don't know, SeaMonkey is the continuation of the Mozilla Suite after the Mozilla Foundation ceased shipping new releases.