DOAJ: Directory of Open Access JournalsCovers thousands of free, full text, quality-controlled scientific and scholarly journals in all subjects and languages.
MERLOT - Health SciencesMERLOT provides discipline-specific learning materials including learning exercises, projects, papers, and class activities.
OER Commons - Health, Medicine, & NursingOER Commons is a freely accessible online library that allows teachers and others to search and discover open educational resources and other freely available instructional materials.
PEIR Digital LibraryThe Pathology Education Informational Resource (PEIR) Digital Library is a multidisciplinary public access image database for use in medical education.