http://www.apokaliptikum.lap.hu
This quite extensive resource collection is compiled by Dr. Hubbes Laszlo.
Although it is in the Hungarian language, some headlines are translated, and it is certainly possible to find quite a number of useful resources, even if you do not know Hungarian. As the sample shows. As Dr. Laszlo informed me, “the majority of the collection points to English sites.”
Especially relevant is the following:
Apocalypse Commentaries
Apocalypse Definitions
Apocalyptic Bibliographies
Apocalyptic in Arts
Apocalyptic in Music
Apocalyptic Resources Online
Apocalyptic Studies
Apocalyptic Symbology and Iconography