According to this website, Rebus is "a global community working together to create and share Open Educational Resources (OER). Here you’ll find people, processes, and tools to support your publishing efforts. You can use this platform to start an open textbook project, give and receive guidance on publishing open textbooks, post and respond to calls for contributors, and connect with global communities that are changing the world through Open Education." More:
- The Rebus Guide to Publishing Open Textbooks (So Far) - A step-by-step guide to creating open textbooks in a collaborative way
- The Textbook Success Program - A professional development package for creators of open educational resources
- Open Publishing Software - A project homepage for your open textbook. Share news, find contributors, publish books.