Malwarebytes, used this for years.
https://www.malwarebytes.com/for-home

Terry

NOD32 all the way!  Many AV programs these days have adopted a cry wolf policy where they mark everything "potentially malicious" if they haven't seen it before, giving a ton of false positives.  This allows them to claim 100% detection but it is useless because it is always crying wolf and you never know what is really malicious versus the guilty-until-proven-innocent assumption.  NOD32 has never slowed my computer down and never let me down.  I use Malwarebytes as a backup/second option but only to do an occasional full scan: I don't let that run real time (in the background) as it is also one of the cry wolf programs that gives a fair number of false positives.

Mike