Touchpad Elite [AppStore, Free]

Control your computer wirelessly with the multi-touch features of the new MacBook line!

For both Mac and Windows:

• Wireless touchpad
• PowerPoint clicker
• Control your media
• Multi-touch access to Task Switcher
• Automated discovery

Specially for Mac:

• Zoom your Mac screen
• Multi-touch access to Expose

No install required on Mac, although free modified Vine Server will give you access to media keys (Play/Pause, etc.). For Windows, free modified TightVNC server will also give you access to media keys.

The price is dropped for a limited time from $4.99 to $0. AppStore link.