Check out this cool iPhone app called iClink which is a wireless data synchronization service specially designed for the Apple iPhone. It keeps the data on your iPhone continuously synchronized with the copy on your PC.
iBeam app lets you instantly beam contacts and photos between two iPhones! Send to another iPhone over wifi, to any other device via email, or use a barcode to optically transfer contact information. Instantly ?Beam? contact information or photos directly to each other.
ZeptoPad changes as you add your ideas: sketch; mindmap; design; planning; and so on. You can scribble on the iPhone screen and also type text from the virtual keypad. When you need extra space, just pinch the screen and the workspace will extend. You can drag and move text or picture elements at any time, cut, paste, and resize. When creating graffiti, you can send it by email as an image file to your friends. “Shake & Share” is a special feature of ZeptoPad. When you meet other users of ZeptoPad, you can send a worksheet to another iPhone directly. Press “Shake & Share” from the menu then shake with another iPhone. ZeptoPad – the only limit is your imagination!