Concordia's list of databases
DIrectory of Open Access Journals provides free, full text, quality controlled scientific and scholarly journals. Its aim is to cover all subjects and languages.
Indiana University Press is offering open access to over 50 journals. Subjects include folklore, education, earth science, anthropology, and more.
PSU Press journals are hosted on Project Muse and are free.
Purdue University Press provides open access to four journals: CLCWeb: Comparative Literature and Culture; First Opinions, Second Reactions; The Journal of Aviation Technology and Engineering; and The Journal of Pre-College Engineering Education Research.