[Ayjay]

It's true that, as Jonathan and Handycam say, there are other browsers that replicate most (though not all) the features of OmniWeb. But they do so via third-party plug-ins and mods that suffer from various degrees of hackishness. Not all of the Firefox add-ons work equally reliably, in my experience anyway, and when Firefox or Safari is updated you often find yourself faced with the choice of (a) delaying the update for quite a while or (b) having your add-ons broken. OmniWeb remains the only browser that has the advanced features baked in. I too have been frustrated by the extremely long wait for 5.6, and the javascript bugs have made it temporarily unusable for me, but assuming that those problems are addressed in 5.6, I wouldn't even consider using a browser other than OmniWeb.