Postage stamp collecting

PHILOTAX
Publisher of catalogs on CD rom, specialising in German stamp catalogs and theme catalogs. Free trial download

Michel
Web site of a famous German stamp catalog publisher. catalogs in text and on CD rom.

Annett Klengler
Site providing info with vintage catalogs about philatelic literature on German Reich, German stamp catalogs of local issues from 1945 and Chinese philately

Philostar
German site representing German stamp catalogs and software