I don't know if you had the pleasure of using Safari for Windows so far, but I must say that version is not far from the Mac OS X one. In fact, Safari running on Windows machines is more reliable than a lot of browsers specifically created for that platform, and that should say it all! If you say that is not true, then you surely need to check the latest Windows version of the software, and not rely on the impression left by the earlier Betas. Anway, this is not about Safari for Windows, since there's something more interesting than that I have in store - OmniWeb for Mac, a browser based on the same framework as Apple's Safari!
As you probably know already, WebKit is the first page rendering engine to score 100/100 in the Acid3 test. Just for your reference, Opera 9.52 gets 84/100, and Firefox 3, a modest 71/100. WebKit, an open source web browser engine, is also the name of the Mac OS X system framework version of the engine that's used by Safari, Dashboard, Mail, and many other OS X applications, including the browser from Omni Group I mentioned earlier, OmniWeb, now at version 5.8.
The latest OmniWeb for Mac version, described by Omni Group as "advanced web browsing that's easy and fun" includes all the security updates present in the latest Safari version, such as downloadable fonts, CSS animation, HTML 5 media tags and client side database storage. The feature list looks great, since OmniWeb has auto-saved browsing sessions, workspaces, ad blocker, and a built-in RSS reader.
When talking about new things in the latest OmniWeb for Mac browser, there's the Google Chrome user agent option(already?!?WOW!), upgraded toolbar icons, a bugfix for Leopard's Spaces, as well as support for Non-POSIX file URLs, together with a bunch of other goodies, especially compatibility improvements.
I left the sad news for the last paragraph, because I always consider that such things must come in last place, but you have to know that OmniWeb for Mac is priced at $15 and requires at least Mac OS X 10.4.8. Fortunately, a 30-days free use demo is available, so you may want to give this browser a try, because it's for sure one piece of software worth trying!