Ccleaner: CCleaner is a small utility that will take care of a few of the important maintenance tasks that every computer user should carry out as regularly as possible to keep their systems in top shape. Fast, reliable and easy to use- for more information: CCleaner HomePage

Malware Bytes: Malwarebytes? Anti-Malware is an anti-malware application that can thoroughly remove even the most advanced malware. It includes a number of features, including a built in protection monitor that blocks malicious processes before they even start-for more information: Malwarebytes HomePage

Spybot: Spybot ? Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies- for more information: Spybot Search & Destroy