Corpus deWaC
deWaC is a 1.7 billion word corpus constructed from the Web limiting the crawl to the .de domain and using medium-frequency words from the SudDeutsche Zeitung corpus and basic German vocabulary lists as seeds. The corpus was POS-tagged and lemmatized with the TreeTagger using this tagset, more information available here.1)
Citing deWaC
M. Baroni, S. Bernardini, A. Ferraresi and E. Zanchetta. 2009. The WaCky Wide Web: A Collection of Very Large Linguistically Processed Web-Crawled Corpora. Language Resources and Evaluation 43(3): 209-226. (PDF to download)
See also
1)
Copied from: http://wacky.sslmit.unibo.it/doku.php?id=corpora#german.