1. Security software

  2. Anti-spyware

IObit Malware Fighter 7.3.0.5799

Removes and protects computers from harmful Malware

Publisher: IObit Information Technology  Rating: 7.1 out of 10 (141 votes)

Windows Defender 4.18.1907.4

Anti-spyware that protects against slow performance and pop-ups

Publisher: Microsoft  Rating: 6.9 out of 10 (838 votes)

Malwarebytes Anti-Malware 3.7.1.2839

This software detects and eradicates unwanted malware programs

Publisher: Malwarebytes  Rating: 6.9 out of 10 (190 votes)

Malwarebytes Anti-Malware PRO 1.75.0.1300

Finds and removes viruses, spyware and other forms of malware

Publisher: Malwarebytes 

SpyBot Search & Destroy 2.7.64.0

Freeware that finds and eliminates malware, spyware and other unwanted files

Publisher: Safer-networking  Rating: 6.8 out of 10 (1308 votes)

AD Killer 1.20

Accurately removes ads that may be damaging or intrusive

Publisher: Softcows 

ComboFix 19.11.4.1

Superb freeware that scans for and kills malware

Publisher: Bleeping Computer  Rating: 7.5 out of 10 (180 votes)

SpyDetect Free 1.0.1

Easily and quickly search your system for signs of viruses and Spyware that could destroy your system

Publisher: Nestersoft Inc  Rating: 3.0 out of 10 (5 votes)

SuperAntiSpyware 8.0.1046

Malware detector with real-time threat protection and simple interface

Publisher: Superantispyware  Rating: 6.9 out of 10 (77 votes)

WiperSoft 1.1.1061

Use this application to clean and protect your devices from viruses or malware

Publisher: WiperSoft  Rating: 10.0 out of 10 (4 votes)