The United Nations Educational, Scientific and Cultural Organization has made thousands of publications freely available online.
The UNESCO Open Access Policy begins with this quote from the World Conference of Science, 1999, held under the auspices of UNESCO and ICSU:
“Equal access to science is not only a social and ethical requirement for human development, but also essential for realizing the full potential of scientific communities worldwide and for orienting scientific progress towards meeting the needs of humankind.”
UNESCO has adopted an Open Access policy in order to make it’s publications freely available to the public and to provide the public with an insight into the work of the organization. Publications are published in a variety of languages, including English, Russian, French, Spanish, and Chinese.
The UNESCO Open Access Repository includes the following resources:
UNESCO Open Educational Resource Platform
UNESCO Atlas of the World’s Languages in Danger
Documents available online via the Open Access Repository include:
Electronic Collection Management 
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