This 
is a question that comes up again and again when we’re talking about the One Repo: how is it different from SHARE?
SHARE stands for SHared Access Research Ecosystem. It is an initiative of academic libraries in the USA, initially created as a response to the OSTP memo on public access. This memo was an important game-changer for how scholarly publishing will work in the USA, effectively expanding the NIH’s very successful public access policy across most federally funded research.
The One Repo blog 