Someone on here mentioned Piwik recently, which is now working with log files as well as JavaScript tags. That's what I'm migrating to, as I'm a big fan of Sane/Unica/IBM NetInsight, and Piwik seems to offer a lot of the same benefits. However, if the traffic on Eric Peterson's Web Analytics Forum is anything to go by, Google and Adobe/Omniture are the only vendors with big market share at the moment.
Edit: And it may well have been IrishWonder!