Chats and Forums
babble, Crash the State, Economic Justice Discussion Room, Hank Roth's Place, Labor Net, Marxism Mailing List, Marxism.Org 'List of Lists', Marxist (Communist) Discussion Forum / MCDF, Mondo Politico: Red Square, NewLeft.NET - Humanist Socialism vs. Neoliberalism
History
A Brief History of the American Left, Before Braverman: Harry Frankel and the American w, Center for Socialist History, Comintern Electronic Archives, Farmer Labor Movement History, History of Socialism - Wikipedia, History of the Communist International, Internet Modern History Sourcebook: Socialism, Introduction to 19th Century Socialism, London Socialist Historians Group
Humor
Dictator Innovations and Jason Hawking, Kremlin Fried Chicken, Magic For Socialism, Mercian Socialist Party, Monkey Law, Pancakes for Pinkos, Sectarian Worker, The Joke Mark Steel Won't Tell, The New Yorker Inane Ad of the Week, WackyMonkey.org
Libertarian Socialism
People, A People's Libertarian Index, Anarchist Federation, Greater Manchester, Aut-op-sy, Class Against Class, Class War, commie zero zero, Council Communism, Daniel Guerin, Endpage Text Archive, International Libertarian Solidarity
Marxism
Communism, People, Arguments for a Workers' Republic, aufheben, ClassicNotes: Communist Manifesto, Communist Manifesto Study Questions, Darwinian Evolution and Human History, Das Kapital, Economarx, Encyclopedia of Trotskyism On-Line (ETOL), For Communism, GegenStandpunkt
News and Media
Magazines and E-zines, Green Left Weekly, In Defence of Marxism, Justice, journal of Socialist Alternative, Radio Libertad, RedNet News - News from the World Communist Press, Socialist Worker Online (US), The Militant, The Socialist, Workers World News Service, World Socialist Web Site
Opposing Views
Anarchist Critiques, Capitalist Critiques, Christian Critiques, Nazism and Socialism, 99 Red Balloons - What would lenin do?, Anti-Communist Action, Left Watch, Misconceptions, Museum of Communism, Pastors for Peace Watch/International Action Cente, Socialism in America, Ten Planks of the Communist Manifesto, The Black Book of Communism, The Case Against the "Reds"
Organizations
International, Alliance for Workers' Liberty (Britain), Australian Egalitarian Movement Inc (AEM), Communist Workers Group New Zealand, Democratic Socialist Perspective (Australia), Fightback, Freedom Road Socialist Organization - Fight Back, Freedom Road Socialist Organization - Forward Moti, International Socialist Forum, International Socialist Group (Britain), International Socialist League (Britain)
Parties
Australia's Socialist Alliance, Democratic Socialist Movement (Nigeria), Freedom Socialist Party, Labor Party/Laodongdang (Taiwan), Leftist Parties of the World, Peace and Freedom Party (U.S.), Resistance Centre Hobart, Socialist Alternative, Socialist Equality Party (Britain), Socialist Labor Party of America
People
Personal Pages, Alexandros Dagkas, James Weinstein, Robert Cohen on the Free Speech Movement, Ross Dowson Archives, Seymour Stedman (1871-1948)
Social Democracy
Parties, People, Third Way, Bulgarian Social Democratic Party, Campaign for Socialism/The Citizen (Scotland), Change, Democratic Socialism into the 21st Century, Douglas-Coldwell Foundation, Fabian Society, International League of Religious Socialists (ILRS, International Union of Socialist Youth (IUSY), New Socialists (U.S.), Socialist International Women (SIW)
Theory
"Why Socialism?" by Albert Einstein, Abram Leon: The Jewish Question - A Marxist Interp, Against the Theory of State Capitalism, archive: the left side of the brain is bigger, British Labour Party Election Manifesto, 1945, Capitalism and Socialism, CapitAllism, Chen Duxiu and the Trotskyists, Communism Simplified, Economic Socialism
Web Rings
Fight the Right, Struggle, Solidarity, Socialism webring, The Social Democracy Pages Webring, Union Ring
Youth and Student
Glasgow University Socialist Worker Student Societ, Hashomer Hatzair (North America), International Resistance / International Socialist, International Socialist Resistance, England & , Moviment Graffitti (Malta), Pulse - Social Democratic Students of Malta, Rebel, Resistance: Socialist Youth Organisation, Revolution, Socialist Students
1917.com
Russian Marxist site in English. Includes a work cataloguing current leftist parties in Russia.
Anglo-Catholic Socialism
Social gospel. The socialism of religion.
Computers and Socialism
Ideas on the topic from Andy Pollack.
Jubilee Group
A loose international network of socialist Christians, mostly within the Catholic tradition. Site includes articles, publications, events and contact information.
Little Red Cafe
A directory to the left side of the web.
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.
Socialism Directory
Resources page on labor and socialist theory and history. In English, French and Spanish.
The Co-operative Commonwealth/William King Server
Named after the leading advocate of the "Cooperative Commonwealth," this site explores that concept of socialism as well as others such as 'guild socialism.'
The Death of Socialism by Roger Kimball
Essay examining the decline of socialism.
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.
Wikipedia: Socialism
Definition and discussion of the subject from the online encyclopedia, Wikipedia.