Eldis - Africa South of the Sahara
The aim of Eldis is to:support the documentation, exchange and use of evidence-based development knowledge; and to communicate this knowledge effectively through a range of appropriately designed services, using the Internet (web and email) as the main communication medium for delivery(website).
Directory of Open Access Repositories. OpenDOAR is an authoritative directory of academic open access repositories.
Open Knowledge Repository - World Bank
The World Bank’s official open access repository for its research outputs and knowledge products. (website)
Socarxiv - preprints
A free, non-profit, open access platform for social scientists to upload working papers, preprints, and published papers, with the option to link data and code. (website - About)
Social Science Research Network (SSRN)
Social Science Research Network (SSRN) is devoted to the rapid worldwide dissemination of social science research and is composed of a number of specialized research networks in each of the social sciences.
"...a full-text, multi-media online database that provides open access to the extensive and diverse array of scholarly, professional, scientific, and creative output produced at Syracuse University..."(website)
Each of these collections allows for full-text searching of all titles simultaneously: