Gratis open access is simply making research available for others to
read without having to pay for it. However, it does not grant the user
the right to make copies, distribute, or modify the work in any way
beyond fair use. Libre open access is gratis, meaning the research is
available free of charge, but it goes further by granting users
additional rights, usually via a
Creative Commons
license, so that people are free to reuse and remix the research. There
are varying degrees of what may be considered Libre open access. For
example, some scholarly articles may permit all uses except commercial
use, some may permit all uses except derivative works, and some may
permit all uses and simply require attribution.
