Spy Software or monitoring software is a computer program that secretly monitors your PC's activity. This includes chats, emails and other Internet activity. This computer spy program runs in complete stealth, so it is completely hidden to others using your PC. AceSpy and other spy software contains no icons, program groups or any other mention of the program. You access the recorded activity by email or by pressing a set of keys together and then entering your password into a window that pops up. Monitoring software is designed in a way that doesn't slow down your computer.