The William and Flora Hewlett Foundation hase probably done more than anyone else to further open education, and it's at it again, this time with a centralised
site for Open Educational Resources (OER):
To ensure that all the valuable knowledge created about OER and the OER cause is readily accessible to a broad audience, the Hewlett Foundation partnered with IssueLab to create a comprehensive OER document repository. This web site is the result of that partnership.