Reason Core Security is an anti-malware program from the developers of HerdProtect. This program is intended to be used alongside your existing anti-virus software and acts as a second layer of defense in the event that malware slips past your anti-virus program's real time protection.
Zemana AntiMalware is a second opinion cloud based malware scanner that allows you to perform on demand scanning as necessary. Zemana AntiMalware does not currently offer real-time protection, but instead acts an extra utility in your security toolbox that is used to scan your machine for malware that your existing security solution may have missed. This allows it use little resources on your computer as it only needs to be loaded when you wish to perform a computer or file scan.
Emsisoft AntiMalware has become a favorite at BleepingComputer.com. It's dual scanning engine consists of BitDefender definitions as well as definitions created by Emsisoft, which when combined, allows for excellent and up-to-date detections.
SUPERAntiSpyware is a free anti-spyware program that offers excellent detections and quick removal of common infections. As malware is constantly evolving and new variants are released, there is not one particular security program that will be able to protect you from all threats. Therefore it is important to have a variety of programs in your security toolbox that you can use to scan your computer for malware and aid you in their removal. SUPERAntiSpyware is definitely one of the programs that you want to have at your disposal.
Malwarebytes is a light-weight anti-malware program that is excellent at removing the latest detections. MBAM is also able to be used along side any other security programs that you may have installed, which allows it to remove malware that was able to sneak through your normal anti-virus solution.