Maintaining strict parental control is absolutely advisable in order to prevent the smallest of the house access to inappropriate content or misuse of certain applications. For this kind of surveillance tasks, Guard & Spy is one of the best programs.
It acts as a powerful monitoring tool, showing at all times what a user is doing with the PC where it is installed. You'll also be able to hear the sounds that the computer picks up, which is very useful.
The keylogger function registers all those texts that are entered with the keyboard, thus being able to control conversations in chats, e-mails and any type of social network. Guard & Spy captures the screen from time to time, sending the file to your email in a fully automated way.
The program can be configured to auto-run in hidden mode with Windows startup.