Dolphin Browser — our pick for the best web browser for Android — is available for the iPhone. In addition to being a generally great alternative to the built-in Safari browser, Dolphin offers several new features, like gesture-based browsing, that sets it apart from many other choices.
iOS (Jailbroken): LockGestures makes your iDevice’s home screen significantly more functional. Instead of just being able to slide to unlock, you can unlock with new gestures or use those same gestures to open apps, cycle through music, and more.
Android: The Nexus S 4G comes with a new, exclusive, gesture-ladedn version of Swype installed. Here’s how you can install it on any rooted phone.
In stock Android, clearing notifications is an all-or-nothing deal. In the CyanogenMod ROM, however, you can clear notifications one by one by swiping.
Android: If you’re ever in a situation where you need to get out of the Android keyboard, a somewhat hidden shortcut will close it right up: just swipe from the top of the keyboard to the bottom.
Multitasktures is a really neat extension for your jailbroken iDevice that lets you swipe left and right, or use various other gestures, to navigate between open apps.