SparkTrust Certified protects your website by actively monitoring for security vulnerabilities, malware infections, and weaknesses exposed by search engines. Additionally, SparkTrust Certified looks at vulnerabilities hackers use to exploit websites, and provides you with the technical information you need to fix the weakness. By providing a comprehensive, universal approach to website security, SparkTrust Certified's unsurpassed technology and live support ensures that your website, and your customers, stays safe.

Features

- Website security report
- On demand scheduling
- Certified secure seal
- Malware Removal
- Blacklist Removal
- Vulnerability remediation sessions with our experts
- Event notifications
- Daily Advanced Web Recon monitor
- Daily Blacklist monitor
- Daily Malware Scanners
- Daily Website Monitor
- Tickets workflow with remediation tips
- Printable reports and charts

Source
https://www.sparktrust.com/sparktrustcertified/account/signup?continue=stc_createaccount_step1&completion=stc_thankyou&activate=&rcID=0&signupType=freeReport&workflow=freeReport

VirusTotal: uses over 40 AV engines. 20 MB file size limit.
http://www.virustotal.com/
Jotti's Malware Scan: uses 20 AV engines. 25 MB file size limit.
http://virusscan.jotti.org/en
VirSCAN: uses 37 AV engines. 20 MB file size limit.
http://virscan.org/
VirusChief: uses 13 AV engines. 10 MB file size limit.
http://www.viruschief.com/
NoVirusThanks: uses 24 AV engines. 20 MB file size limit.
http://vscan.novirusthanks.org/
Metascan Online: uses 18 AV engines. 40 MB file size limit.
http://www.metascan-online.com/
Gary's Hood: uses 5 AV engines. 10 MB file size limit.
http://www.garyshood.com/virus/
avast! Online Scanner: 16 MB file size limit.
http://onlinescan.avast.com/
Dr.Web Online Scan: unlimited
http://vms.drweb.com/online/
Kaspersky File Scanner: 1 MB file size limit.
http://www.kaspersky.com/scanforvirus
FortiGuard: 1 MB file size limit.
http://www.fortiguard.com/antivirus/virus_scanner.html