Understanding Open Access

Finally, in addition to U.S. Federal Government Agencies, some private funding agencies (in the United States and in other countries) are beginning to develop policies that stipulate Open or Public Access as a requirement for grant funding. Below are some examples of U.S.-based agencies that have such policies — a trend that appears to be growing.
 

Examples:

See a list of world-wide funding agencies with Open/Public Access policies at the Registry of Open Access Repository Mandates and Policies.