Duden language technology together with its partners in industry and science carries out research and development projects in the fields of knowledge management and computer linguistics. Duden’s spelling and grammar are regarded as trend-setting and leading on the market. The products developed by Duden cover the most comprehensive and profoundly edited word-list. The company’s portfolio includes dictionaries and reference books, guides, exercise books, as well as the the award winning Duden Rechtschreibung.