Dendrobox (available at dendrobox.org) is an interactive interface to the International Tree-Ring Data Bank (ITRDB), the main public archive of digital tree-ring parameters. It allows for exploring chronology characteristics and the dendroclimatological potential of the records. Possible applications of Dendrobox include identifying records with a specific climate response, demonstrating the relations of tree-growth and climate in teaching, or simply playing with an impressive data set without the hassle of setting up analytical tools.