Are you a bargain hunter? Then download this app, which catalogs Amazon's complete inventory. Next time you're in a brick-and-mortar store, use the snappy barcode search (iPhone and Android only) to search for better prices. Add an item to your wish list or buy it on the spot with a few taps.
WIRED Search results update as fast as you can type. Offers links to track outstanding orders.
TIRED No way to sort search results by price — pretty lame, given that discounts are Amazon's big sell.