From Alpine Snow:
Save Keys Undetectable is an invisible key recorder that secretly logs every key typed into the keyboard. Other information such as window titles, program names and paths, and clipboard text also can be recorded. The program has improved encryption for faster encoding and decoding of the log file. Save Keys Undetectable makes encryption of mail, messages, and passwords completely useless since they can be saved to a file before being encrypted. An excellent tool for monitoring your friends, workers, and family members; it's especially useful for workstations or computers used by many people.