MalwareScanner which runs of VirusTotals API
MalScan is a script that uses the API of VirusTotal. This can be used to scan any of your files and it will quarentine them to an encrypted area of your PC, which you can then go on to access, for removal. The quarentine system is similar to the one ESET uses.
If wanted you can purchase a premium API Key from their website for more intensive malware scans.