Angry Birds dominated the App Store in 2010, but Cut the Rope — an equally addictive puzzle-like game — gave it a run for its money at the end of the year.
Kayak, the popular meta-search website, has created an app that makes it easy to search for hotels, flights and car rentals even while you're away from your desk.
The Paypal iPhone app boasts several cool features, but two of them deserve some extra attention: 1) "Bump Phones" lets you send or receive money between your phone and another Paypal user's phone simply by bumping them together
With an almost inexhaustible selection of sports scores and leagues to follow in real time, ESPN's free ScoreCenter app sweetens the deal by throwing in breaking news updates and letting you customize the app to feature your favorite teams and sports.
Skype uses your phone's data connection to make free calls to other Skype users. And unlike Apple's FaceTime video chatting feature that only works on Wi-Fi networks, Skype users can video chat with each other over a 3G connection.
