Here is a selection of website(s) dedicated to domains in German language:

Forums

Domain forum (English version available)
Consult domain

Marketplaces

Sedo - World leading marketplace

Nicit - Domain marketplace & extensive resources for domainers

Domain dealer - Domain name sales & large directory of resources for domainers

Domainvermarkterforum.de - Yearly domain market Forum

Other resources

Domain-Recht - Comprehensive resources for domainers

Domain portal - Directory of resources

Domain literacy - German blog about domain names

Do-main-news.at - Online version of the magazine of the Austrian domain-registry (English version available)

 

Other tools and links for domainers >>