WIG (WebApp Information Gatherer) is a web application information collection tool that can identify numerous content management systems and other management applications.

Application fingerprint recognition is based on checksum and string matching of known files of different versions of CMSes. This results in calculating the score for each detected CMS and its version. Each detected CMS is displayed with the most likely version. Score calculation is based on weights and the number of “hits” for a given checksum.