Český národní korpus
The Czech National Corpus is a project that makes various sets of authentic texts (partial corpora) accessible and serves both laymen and professionals as a starting point for various types of empirical knowledge of the Czech language.
After free registration, corpora are open to all those interested in the language, they can use special tools to search for language phenomena (eg words and phrases). The corpus displays linguistic phenomena in their natural context, and thus makes it possible to create based on linguistic data-based linguistic research to an extent that was previously unthinkable.
Additional link for access