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.
MBRCheck - MBRCheck identifies infected Master Boot Records (MBR).
AdwCleaner - AdwCleaner is a free removal tool for : Adware (ads softwares)
GMER - GMER is an application that detects and removes rootkits .
Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
RootkitRevealer - RootkitRevealer is an advanced rootkit detection utility.