Avast Free Antivirus 2019 is the company's latest malware-hunting engine.

Installation is simple and straightforward. Compatibility seems good, too, with the package running happily alongside Bitdefender Internet Security on our test PC.

The program interface is clean and very easy to use. Just click "Run Smart Scan" and Free Antivirus immediately runs a quick check for malware, missing software updates, network vulnerabilities even looks for weak passwords and junk files.