CyberLeninism -- "Our mission is to correct the wrong conceptions which grew out of the 1917 revolution and to lay the theoretical foundation for the 21st century."
Ernan's Marxism Page
-- Features a hypertext of Chapter 1 ("Commodities") from Capital vol. 1 with links to commentaries from Harry Cleaver's Reading Capital.
Hegel by HyperText -- Readings of Hegel's Science of Logic including Engels's Socialism: Utopian and Scientific and Ludwig Feuerbach and Lenin's Annotations
The Marxism Space Home Page (Spoon Collective) Here you can delve into the archives of the old Marxism List along with finding info on how to join its various progeny: marxism-and-sciences, marxism-feminism, marxism-general, marxism-international, marxism-intro, marxism-news, marxism-psych, and marxism-thaxis.
Marxjour List -- "Marxjour mailing list's main goal is the promotion of links between the journals, reviews and other periodical publications working in marxist tradition."
Marx and Engels WWW Library -- A stupendous searchable database of e-texts with more bits and pieces coming online all the time. They hope to have the entire out-of-print Collected Works available online eventually.
Marx and Engels'
Writings -- At the Carnegie-Mellon English Server. Less extensive than the above but also searchable.
Take Me Back Home Comrade!