More good news is on the horizon for those people who don't like Zillow:
A Zillow competitor is: www.realestateabc.com The name isn't as cool and the design isn't a fluid as Zillow, but it may be better in some ways. For instance, Real Estate ABC allows users to adjust property values for a particular property with an Ajax slider. Adjustable property factors include Interior, Exterior, Lot Size, View, Privacy/Noise and Local Market Conditions.
Users can also refine property values by adding or removing comparables directly on the results page. In fact, Real Estate ABC gives significant detail on comparables, including distance from a specific address. Real Estate ABC also provides a mashup with Google maps, although they do not use satellite images like Zillow.
You might also want to check out http://cyberhomes.com
Source: Michael Arrington, TechCrunch.com