i just heard about it and it sounded interesting as a demand scanner (has 10 engines in it). but it's hard to find any information about it. i downloaded it as a portable (version 2.2 was highest i could find). their website just gives a picture with nothing else (http://www.avertsoftware.com)??? it has several scan engines in it, and seems to need entire signatures updated with each use (?). heres the review i found that interested me (but it's from 2010, major geeks has its last update in 2011) - i think it might be a dead product): http://www.ghacks.net/2010/10/25/avert-scan-computers-with-multiple-antivirus-engines/ i downloaded it from here (also nice description given): http://www.majorgeeks.com/files/details/avert.html note: this is not stinger from mcafee which also comes up in searches.