Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
ComboFix - Combofix is a free anti-malware program developed by sUBs for Windows computers
AdwCleaner - AdwCleaner is a free removal tool for : Adware (ads softwares)
IObit Malware Fighter - Free Anti-Ransomware & Malware, removes Windows ransomware like Petya/GoldenEye ransomware & protects PC from spyware, ransomware, adware, trojans, keyloggers, bots, worms, and hijackers.
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.
Emsisoft Anti-Malware - Emsisoft Anti-Malware for best real-time protection against ransomware and other malware with dual scanner, behaviour blocker and more advanced features.