From Spypatrol Internet Surveillance:
Invisible Keylogger is a superior stealth surveillance application that is completely undetectable. During monitoring sessions Invisible Keylogger can be customized to be completely invisible and cannot be seen in the task manager, programs files menu, system tray or uninstall list. With Invisible Keylogger running all information will be captured in complete stealth mode! Record all keystrokes typed, chat conversations, email, desktop activity and more with the most powerful stealth surveillance application offered anywhere and at the lowest price with a 30 day money back guarantee.