AMarker 

This provides alternative ways to launch programs and to protect your computer from erroneous mouse clicks. Just draw colored transparent regions over the screen and assign a mouse-click action to the area.
launcher desktop desktop launcher prohibit protect mouse child keyboard shortcuts icons screen

System Locker 

Use System Locker to restrict access to your PC. It has powerful startup and automation options, taskbar icon notification, supports audit and scheduling features. Protects your system when you are away. Extremely effective for home and office use.
keyboard mouse input lock system protection block access audit control schedule sound

Keyboard Monitor 

Keyboard Monitor records all the keys that are pressed until turned off. Use it to ensure that your child's (or spouse's!) chat room and email activities are on the up and up.
keyboard monitor spy record keystrokes chat windows