| A Brief History of the American Left: Online essay by Maurice Isserman. |
| Before Braverman: Harry Frankel and the American workers' movement.(Harry Braverman): Article by Bryan Palmer on Marxist Harry Braverman. Published in Monthly Review. |
| 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. |
| Comintern Electronic Archives: Documents from the Communist International (1919 to 1943). |
| Farmer Labor Movement History: Toward the Cooperative Commonwealth: An introductory history of the Farmer-Labor movement in Minnesota (1917-1948). PhD thesis by Thomas Gerald O'Connell. |
| History of Socialism - Wikipedia: Encyclopedia article tracing the history and development of socialist thought and practice. |
| History of the Communist International: Text of key documents from the Comintern 1919 - 1943. |
| Internet Modern History Sourcebook: Socialism: Documents from the history of various varieties of socialism. |
| Introduction to 19th Century Socialism: Examines the emergence of socialist ideas in the wake of the Enlightenment and the Industrial Revolution. |
| London Socialist Historians Group: Organises conferences and publishes a newsletter three times a year. Activities, seminars, conferences, newsletter, bibliography and message board. |
| Marxist History: Online library of historical data on Marxism and the revolutionary working class. |
| 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. |
| NOW with Bill Moyers. Society and Community. History of the Social Gospel | PBS: Information about the Social Gospel tradition of Christian socialism. |
| Radical History Review: Analyzes and challenges hierarchies of class, race, gender, sexuality, and empire from a variety of oppositional perspectives. |
| 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. |
| Socialism and the Labour Movement: An examination of British socialist history. |
| Socialist History Project: Essays about and documents from the history of the Marxist movement in Canada. |
| Socialist History Society: Information about the British group, online bulletins, papers and Socialist History Journal. |
| 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. |
| What Next?: Online Marxist discussion journal that carries a number of historical articles. |
Classical
