Militant 1964 - 1997
- Official Militant Tendency website. Thirty two years of Militant, now The Socialist, paper of the Socialist Party, with links to the Socialist Party.
- http://www.militant.org.uk/

Comintern Electronic Archives
- Documents from the Communist International (1919 to 1943).
- http://www.komintern-online.ru/

Socialist History Project
- Essays about and documents from the history of the Marxist movement in Canada.
- http://www.socialisthistory.ca

Before Braverman: Harry Frankel and the American workers' movement.(Harry Braverman)
- Article by Bryan Palmer on Marxist Harry Braverman. Published in Monthly Review.
- http://www.findarticles.com/cf_dls/m1132/8_50/53972890/p2/article.jhtml?term=

History of the Communist International
- Text of key documents from the Comintern 1919 - 1943.
- http://www.marxists.org/history/international/comintern/

Radical History Review
- Analyzes and challenges hierarchies of class, race, gender, sexuality, and empire from a variety of oppositional perspectives.
- http://chnm.gmu.edu/rhr/rhr.htm

Socialist History Society
- Information about the British group, online bulletins, papers and Socialist History Journal.
- http://www.socialisthistorysociety.co.uk

NOW with Bill Moyers. Society and Community. History of the Social Gospel | PBS
- Information about the Social Gospel tradition of Christian socialism.
- http://www.pbs.org/now/society/socialgospel.html

Socialism and the Labour Movement
- An examination of British socialist history.
- http://www.spartacus.schoolnet.co.uk/socialism.htm

History of Socialism - Wikipedia
- Encyclopedia article tracing the history and development of socialist thought and practice.
- http://en.wikipedia.org/wiki/History_of_Socialism

Internet Modern History Sourcebook: Socialism
- Documents from the history of various varieties of socialism.
- http://www.fordham.edu/halsall/mod/modsbook33.html

Introduction to 19th Century Socialism
- Examines the emergence of socialist ideas in the wake of the Enlightenment and the Industrial Revolution.
- http://www.wsu.edu:8080/~brians/hum_303/socialism.html

The Free Speech Movement Archives
- Documents, speeches, articles and recollections from and about the FSM at Berkeley which was a key event in the formation of the New Left and the 60s radicalization.
- http://www.straw.com/fsm-a/

A Brief History of the American Left
- Online essay by Maurice Isserman.
- http://dsausa.org/about/history.html

Marxist History
- Online library of historical data on Marxism and the revolutionary working class.
- http://www.marxists.org/history

Revolutionary History
- Non-sectarian journal documenting and discussing the history of the revolutionary socialist movement, from a mainly Trotskyist viewpoint. It neither belongs to, nor supports any trend within the Trotskyist movement.
- http://www.revolutionary-history.co.uk

London Socialist Historians Group
- Organises conferences and publishes a newsletter three times a year. Activities, seminars, conferences, newsletter, bibliography and message board.
- http://www.londonsocialisthistorians.org

Center for Socialist History
- Non-profit corporation founded to promote research and publication in the field of the history of socialism. Includes publications, archives and other resources.
- http://csh.gn.apc.org