10. WiFi TouchPad HD For iOS
Who hasn't needed to control a Mac or Windows machine from across the room? Whether for advancing slides for a sales presentation, setting media volume at the company Christmas party or surfing through the latest website design, reaching out and touching a computer is not always possible -- unless you have WiFi TouchPad HD, a free utility for iPad ($0.99 for iPhone) that uses Wi-Fi to turn any iOS device into a touchpad and keyboard for computers on the same subnet. An agent supports Windows XP/Vista/7 and Mac OS X 10.5 and higher.