I received notification of this resource from Jimmy Atkinson quite some time ago, but I finally have found some time to explore it.
“… the list below â€” arranged in alphabetical order â€” includes 80 online resources that you can use to learn how to build or participate in a collaborative educational effort that focuses on publication and development of those materials. Although some choices focus solely on publication, development, or tools used to accomplish either effort, some provide multifaceted venues that offer communities a space to collaborate on one or all of these efforts. Collaborators can include institutions, colleges or universities, educators, students, or the general public.”
There are many excellent resources here. I am sure many of you are familiar with most, but there were a few that I had not heard of. Thanks Jimmy!