Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
Autoruns - See what programs are configured to startup automatically when your system boots and you login.
AdwCleaner - AdwCleaner is a free removal tool for : Adware (ads softwares)
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Spybot - Search & Destroy - Spybot Search & Destroy is an anti-malware, adware and antivirus program for safe removal of the threats from the PC and browser.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.