ElbertF/Wappalyzer — pull request #395 by ToBeFree (2013-12-04 17:19:11+00:00)
Title: Added Lightbox detection

Lightbox is also used by various CMS like vBulletin to display images, as far as I know.
http://lokeshdhakar.com/projects/lightbox2/
https://en.wikipedia.org/wiki/Lightbox_%28JavaScript%29