An OER Repository is a website that houses a vast amount of OER or OA to search through. Since there is a massive amount of OER or OA available, finding particular material requires precise searches and filtering.
Most OER textbooks can be fully downloaded immediately. In addition, depending on the Creative Commons license, they can be revised or remixed depending on the needs of your classroom.
Open Courseware, or OCW, is fully designed courses that are free or at a low-cost towards the public via the internet.