Today I discovered, for the first time, OmniWeb 5. It's a commercial web browser but also available for free, with some limitations. It's one of the coolest web browser that I've ever seen so far,I really have no idea about security, I didn't find time to test it, but it gotta a new concept of tabs and lots of graphic innovations. Just for example, I was impressed about new tab's concept. They're not horizontal like all the normal web browsers they're vertical with a little preview in real time.
Here, only one of the amazing features that I found.
At last, here all the innovative features that it sells for $15.