Type2phone - Type2Phone: Use your Mac as keyboard for iOS devices
CheatKeys - View Windows keyboard shortcuts in the current application.
1keyboard - Type on your iPhone, iPad or AppleTV using your Mac keyboard
Hotkey Commander - Find out and override what hotkey combination is registered by which application.
KeyWi - Use your computer's keyboard to type on your iPhone or iPad
KeyCue - Menu shortcuts are supposed to provide quick access to frequently used menu commands.