Real Spy Monitor can monitor all PC activity including keystrokes typed, web sites visited, windows opened, program executed, screen snapshots, files/docs accessed and more. It can also record instant messenger conversations including AOL, ICQ, MSN, AIM, Yahoo Messenger, and capture web mail content from MSN, Hotmail, and Yahoo. The program can run in semi-stealth mode (visible in Task Manager) and automatically send logs to a specified email address. Additional features include screenshot capture and content filtering. The program does not include any documentation. Because it is sold commercially, most anti-virus vendors do not detect them. The most common form of a commercial monitoring tool comes in the form of a keystroke logger, which intercepts keystrokes from the keyboard and records them in some form of a log. This can then be sent to whoever installed the keystroke logger, or keylogger, onto the machine.