SSRN: the Social Science Research Network, or the SSRN eLibrary, is an open access repository for research in the social sciences. It's made up of a number of networks, with subjects covering such fields as accounting, anthropology, economics, finance, health, leadership, management, marketing, politics, sustainability, and more. Over 500,000 abstracts are available, as well as over 413,000 full text articles. Papers from conferences, articles published in journals, and research center papers are among the works included. Some papers require payment, but much of the material found through SSRN is available for free download.
A free registration is required to use the site fully.