I am using version 1.0.7 of SnoopFree and it is free!
This small program takes less than 7k of resources in task manager. Very resource-friendly! It is also a very easy program to use. Install it and answer any popup prompts. This is made simple by the information that SnoopFree Privacy Shield provides the user on programs. You can "forget file" or "destroy file". There are two tabs-Log and Access Control.The help files are clear.
This program seems tailored for keylogger detection/prevention. Should be effective against trojans also.