Best Free Software Security

Avast Free Antivirus

System Requirements: Win Vista - 10
Portable: No
Download Page: http://www.avast.com/en-au/index

Description:
Avast! Free Antivirus is a free antivirus software for home and non-commercial use. In my opinion it is the best free antivirus program that is available.

AdwCleaner

System Requirements: Win Vista - 10
Portable: Yes
Download Page: https://toolslib.net/downloads/viewdownload/1-adwcleaner/

Description:
This software searches for and deletes adware, suspicious toolbars and potentially unwanted Programs and from your computer. It is easy to use, portable and regularly updated by the creator. Highly Recommended