For research purposes we are releasing our command-line scanners and signature updates for those who wish to implement malware scanning in a not-for-profit project. Organizations such as VirusTotal, Jotti, CastleCops MIRT, ShadowServer and others use these scanners already on a daily basis to provide a valuable service for the community.
The scanner works under Windows (NT/Me/2000/2003/XP/Vista) and under Linux (rpm and tgz). Non-regular signature updates can be found here. If you are working on a project which needs regular updates please contact me directly.