Safari is Apple's own browser for Mac, but they do make a Windows Version.No...sorry, guess you're not familiar with Safari and OmniWeb? They are two different browser applications. I use tabs and keep multiple windows open in both. But they have slightly different feature sets and tabbed browsing behavior and I sometimes prefer one or the other for certain web sites or browsing behavior. Safari tends to be faster at page rendering but OmniWeb has a richer feature set.
Typically, I have one browser window open. Sometimes I have a dozen. I keep both applications open.