Postage stamp collecting

Schnellbacher philatelie.
Site devoted to dealing German postal history materials, German stamps, European stamps and more

Kohlmeier, Sebastian - Errors and Postal History Germany
Interested in German postal history, specifically about stamps with errors

German Field Post during WW2
A section of the Japhila site about German postal history of its military during World War 2

Phila-Gert, der Sammler
Site in German devoted to American, European and German postal history

Klassische Philatelie
Site in German devoted to classic philately and German postal history, also learn about philately from Chile, Brazil and Italy

Deutsche Einheit
Site in German dedicated to the research of German philately and German postal history

Philatelie Eduard Breimann
Site in German, with information about German postal history, and tips and suggestions for the interested philatelist

Brunswick Philately
Site devoted to German postal history, stamps and postal rates of several (former) German states, such as Braunschweig (Brunswick) in particular, and The Netherlands (Nederland, Holland)

Traditionsverein von 1890
Site in German of an association interested in German philately and German postal history, especially Wuppertal, and Switzerland

Privatpost-Merkur
A site in German dedicated to German postal history