
Sherpa/Romeo provides a searchable database of publishers' copyright and self-archiving policies for pre and post-print journal articles. Search Sherpa/Romeo for publishing policies by journal title or publisher name. RoMEO provides a handy color-coded chart that identifies journal archiving policies. Note that exceptions can often be negotiated by authors!
Sherpa/Romeo is based at the University of Nottingham, England.
COD Library has produced a handy guide for questions about Copyright, including sections on Copyright law, Public Domain, Fair Use, Getting Permission and the Teach Act.
Creative Commons is a nonprofit organization that enables the sharing and use of creativity and knowledge through free legal tools.