OS10.5.8 imac 4Gb ram
I have used sophos but it really slowed down my computer. I googled ClamXV and I got positive reports. I have been using it for about 3 months now and a good feature that you can put whatever you like in the sidebar and scan that item.
Particularly good for new downloads, & mail.
jaybass


OS 13.6.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD