I’ve been interested in sustainability models for OER for decades. (Longtime readers may recall that the research group I founded at Utah State University in 2003, the Open Sustainable Learning Opportunities group, became The Center for Open and Sustainable Learning in 2005, which I directed until I moved to BYU.) And for just as long, I’ve believed that there are useful lessons for us to learn on this topic from open source software – OER’s far more popular and influential sibling.