Best spyware program

["Bapodara, Shyamal" <Shyamal.Bapodara () earthtech com>]

Hello Team
I do like to test different so called "free"  software available online.
What is the best to test if they don't have any spyware in it once it is
installed?
What will be the best way to test these with out compromising my system?
Thanks
Shyamal


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