Fnd - Browse Apple App Store and iTunes on the Web
AppAgg - Application Aggregator
Knicket App Search - The future Wikipedia for Apps
AppAdvice - AppAdvice is the leading online and 'onapp' resource covering all thing iOS
AppSales - Find the best Android apps and games from Google Play that are currently discounted or free for a limited time
Apple Sliced - Apple Sliced searches the Web for the lowest prices and uses only Authorized Apple Resellers, so...