PC Spy Keylogger - Version 3.83 PC Spy Keylogger is a top-rated, invisible and easy-to-use surveillance tool that records every keystroke to a log file. The log file can be sent secretly with email or FTP to a specified receiver. It can also detection specified keywords and take a screenshot whenever one is typed, displaying findings in a tidy log viewer. It causes no suspicious slowdowns and takes very few system resources. all this is happening in full stealth mode so the person you are monitoring will never be aware of it.