Berkeley Free Speech Movement archives.
Andy Bluden's home page -- Replete with Marxist and related philosophical documents.
Bolerium Books -- Very fine source of Marxist and radical books and pamphlets.
Brecht Forum -- They sell tapes of outstanding lectures from their forum series.
Socialist History Project: documents from the revolutionary movement in Canada
eserver.org -- Carnegie-Mellon humanites collection, includes left and Marxist texts.
Gotham Center: website created by author of "Gotham", a radical history of NYC.
Hanover College History texts and documents -- Database of historical texts.
Hartford Web Publishing: archive of documents useful to the left
Historians.org: debunking Hiroshima and Nagasaki.
International Institute of Social History: Netherlands based archives of labor and left resources.
Scholar's Guide to the WWW: assembled by Richard Jensen, a retired professor
Lannan Foundation: online video devoted to cultural diversity, including Native American voices.
Marxism Internet Archive -- Writings of Marx, Engels, Lenin, Luxemburg and others.
University of Kansas Index of Resources for History -- Similar to Hanover College website above.
Historical Voices: Michigan State University audio archives, includes Flint strike and Studs Terkel
Ocean Books, Australia based radical publishing .
Red Space: Rowan Pearce's collection of socialist resources.
Niebyl Proctor Marxist Library --A research library that was set up by a group of volunteers and benefactors for the use of students, teachers, librarians, researchers, and community activists.
Praxis: scholarly resources on social and economic development
REDS - Die Roten (German/English Marxist texts)
Softskull Press: NYC based publishers of interesting radical and cultural literature
Centro de estudios, investigaciones y publicaciones "Lesn Trotsky".