This project is as a wiki-based catalogue of the paintings and drawings by Jan Brueghel, his workshop, and his imitators. This includes a corpus of perhaps 500-600 works that are entirely or largely the work of Jan himself, and hundreds more copies and variants. In the wiki, each of these objects has its own page with an image and full cataloging data and bibliography; behind each of these pages, a discussion page allows other facts and opinions to be added.