Sophos Anti-Virus is an anti-virus and anti-spyware program by Sophos plc, which is aimed primarily at corporate environments. Centralised management is performed via Sophos Enterprise Console. It is believed to be the Anti-Virus used by Gmail.
The SAV Interface software development toolkit allows software developers to integrate the Sophos virus detection engine in their applications in C or C++.
http://www.sophos.com/
