Synergy - Cross-platform software for sharing your mouse and keyboard between multiple computers
ISBoxer - Play characters together. Powerlevel yourself. Multibox.
Input Director - Control multiple windows systems with one keyboard/mouse. Share a keyboard and mouse across multiple windows system.
HotkeyNet - HotkeyNet is free multiboxing software.
ShareKM - Control your Droid from your desktop with MOUSE and KEYBOARD.
Buttoncommander - Buttoncommander 1.0 is a Automation Software that can Create Toolbar Launchers for any sort of applications. Run command scripts from tool images.