Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
Webroot - Webroot delivers multi-vector protection for endpoints and networks and threat intelligence services to protect businesses and individuals in a connected world.
Panda Antivirus for Mac - A bare bones malware and anti-virus scanner.
VIPRE - Keep your data safe with VIPRE. We offer industry leading, top-rated antivirus software and cyber security protection for personal and business use.
Clam Xav (desktop) - Specifically with Clam Xav Sentry configured to scan inserted disks.Please read global comments on this question for an explanation of why desktop apps are being recommended for virus detection on ios devices.
DbProtect - Trustwave DbProtect is a highly scalable database security platform that helps organizations secure their relational databases and big data stores, both on premises and in the cloud.