You can view a selection of guilds or clans and their sites here at Clanplanet. Some are already visible on the home page (blue link). The selection here is even more extensive and you can view more sites.

German Ghost Army	Rushing-Alliance	German Death Angels
The German Navy Seals	La Familia	The Patriots
Psycho Intelligence	The German Eagles	Legacy of Khaos
unknown Rivals	Division 300	No Self Kontrol
The German Dragons	The German Devils