Goethe's Werke (Weimarer Ausgabe) includes the complete text of the 143 volumes of the definitive Weimar edition/Sophie edition.
Kafkas Werke (Kritische Ausgabe) makes 15 volumes of Kafka’s (1883-1924) novels, short stories, and diaries available electronically for the first time.
Schillers Werke currently includes 46 volumes of the Nationalausgabe with further volumes added to the Web edition. The complete text of each volume will be available, including all illustrations, notes, variants, and indexes.
All three of these include the critical apparatus, notes on sources, as well as on the genesis of the works and their subsequent influence on German literature.