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
Advanced Recon Commando'	La Familia	The Patriots
The German Eagles	The German Navy Seals	Psycho Intelligence
Legacy of Khaos	unknown Rivals	Division 300
No Self Kontrol	The German Dragons	The German Devils