Amazon has a new spin-off, A9, that would seem to be in competition with Google, yet strangely "enhances" their searches with licensed Google technology.
Much of what they're doing is just moving record-keeping functions such as bookmarking and surfing histories to a web service from the desktop. I am, however, kind of interested in this:
Diary: This is the newest and (we think) coolest feature of the toolbar. You can take notes on any web page, and reference them whenever you visit that page, on any computer that you use. Your entries are automatically saved whenever you stop typing or when you go to another page
Unfortunately, we Mac users will just have to wait for a version we can use.
