On the following pages you will find directories with open textbooks and in part further content:

• Maryland Open Source Textbook Commons (MOST)
• Open Textbook Library
• OER Commons – Open Textbooks
• BC Campus OpenEd – Open Textbook Collection
• MERLOT Multimedia Educational Resource for Learning and Online Teaching
• OAPEN
• DOAB
• OpenStax
• MIT OpenCourseWare
• Saylor Academy Open Textbooks
• CORE Econ – Economics for a changing world
• The Economics Network