DisplayPad is a cutting edge app that allows you to use your iPad as a second display for your Mac. You can extend your desktop with a wireless display that you can carry around with you!

DisplayPad uses carefully tuned technology that makes it the smoothest and most responsive app of its kind on the App Store. We have carefully crafted a dynamic and unique solution to make DisplayPad outperform its competitors.

Features:
• HiDPI support (on Mountain Lion and Mavericks) and scaled resolutions support.
• Tap your iPad to click.
• Two finger tap to right click.
• Two finger drag to scroll, just like on a laptop trackpad.
• Rotate the screen and DisplayPad automatically changes the mode of the display.
• Position the display anywhere relative to your desktop, just like an external display.

Author's Note: Users of MacBook Pros with dual graphics hardware will need to disable Automatic Graphics Switching.

Requirements:
OS X 10.6+
DisplayPad on Lion (10.7) is currently unsupported on machines with the NVIDIA GeForce 9400M.
Intel