Remotus is an android application that connects an android phone to a computer through a WIFI network, and allows the user to use the phone as a wireless mouse and keyboard.

Remotus is completely free and open source.
Homepage: http://code.google.com/p/remotus/

Features:

- Scroll by swiping the right edge of the screen.
- Right click by long clicking on the screen.
- Click and drag support.
- Sywpe support.
- Should work with any android keyboard.
- Use the phone's D-Pad as the keyboard's arrow key and the D-Pad center button as the enter key.

Requirements:

- Android 1.6 or higher.
- WIFI network.
- Java Runtime Enviroment

Instructions:
- Make sure both your phone and computer are connected to the same WIFI network.
- Computer side:
- Disable the computer's firewall if needed.
- Download the server application and run it on the computer (Download here)
- Phone side:
- Install the android application and run it.
- Enter your computer's name or IP as shown in the server application and click connect.