OER requirements include philosophical, pedagogical, and technological dimensions. Philosophically, OER should be freely accessible and allow users to adapt, modify, and earn a living from the content. Pedagogically, OER should follow David Wiley's 4Rs model allowing users to reuse, revise, remix, and redistribute the content. Technologically, OER should be stored in open file formats that are editable.

2. Requirements for OER
The OER Foundation and the WikiEducator community, the
following are important dimensions they consider requirements
for OER:
1. Philosophical: Drawing on the essential freedoms we believe
that OER should be accessible at no-cost (gratis) but more
importantly provide users with the necessary freedoms to
adapt, modify and earn a living (libre).
2. Pedagogical: permissions drawing on David Wiley's 4Rs, ie
the permissions to Reuse, Revise, Remix and Redistribute
3. Technological : that is storing OERs in editable and open file
formats.