MERLOT is a free and open online community of resources designed primarily for faculty, staff and students of higher education from around the world to share their learning materials and pedagogy
OER Commons is a freely accessible online library located at www.oercommons.org that provides a web-based infrastructure for teachers and others to search and discover Open Educational Resources (OER) and other freely available instructional materials
"The DLD offers online courses as an option to help schools meet students' individual needs, expand learning opportunities, and diversify their curricula."