Online version of the seminal work by Karl Kautsky which explores the history of Christianity from a Marxist perspective.

Document archive of Karl Kautsky. Includes "Marxism and Bolshevism," "The Class Struggle (Erfurt Program),"The Social Revolution," and other works by the German Marxist.

Short biography and description of the contents of the Kautsky Archives at the International Institute of Social History in Amsterdam.

Karl Kautsky's position on the place of Hegel's dialectic.