Malware Hash

Malware Hash is a free service offered by NoVirusThanks.org that collects the malicious MD5 hash of the files that are analyzed in the Malware & Virus Scan Service.
http://www.malwarehash.com/

DEFT Linux

DEFT (acronym of “Digital Evidence & Forensic Toolkit) is a customized distribution of the Xubuntu live Linux CD.
http://www.deftlinux.net/

Filterbit™

Using Filterbit, you can upload a file and get results from 9 different scanners.
http://www.filterbit.com/