JSTOR

Covers Economics, History, Political science, Archeology, African Studies, Music, Art & Art History, Business, Ecology & Botany, Language & Literature, Mathematics & Statistics 

IEEE

IEEE/IET Electronic Library Electrical Engineering, Telecommunications, Computer Science; Architecture, Imaging Science & Photographic Technology, Robotics, Biomedical Engineering, Computer Science Information Systems, Software Engineering, Remote Sensing and Artificial Intelligence.