Red Future - News about the Left. Information on Marx, Engels, Lenin, Trotsky, and Guevara.
Red Piranha - Repository of information about the history, leadership and current politics of left-wing parties and movements around the world.
The Socialism Organization - Essays and news archives from China's People's Daily, chatroom and links about socialism "with Chinese characteristics." Sponsored by the Wyith Corporation of Hong Kong.
Anglo-Catholic Socialism - Social gospel. The socialism of religion.
Computers and Socialism - Ideas on the topic from Andy Pollack.
La Revolucion - A site of multimedia information and links.
Jubilee Group - A loose international network of socialist Christians, mostly within the Catholic tradition. Site includes articles, publications, events and contact information.
The Death of Socialism by Roger Kimball - Essay examining the decline of socialism.
Wikipedia: Socialism - Definition and discussion of the subject from the online encyclopedia, Wikipedia.