This search engine works similar to Google (as far as I can tell after trying a few searches) and brings you all the results you want directly from the Android Market. It works fast, and there are quite a number of options when it comes to sorting the search results by what you’re looking for. However, it’s missing Android Market features such as reviews by device type or installing directly to your phone (you’ll need to scan QR codes or email links to your device).
But if you’re searching for apps and you don’t know what you’re looking for, Appgravity can help out with that. Check it out and let us know what you think.