"Open-access (OA) literature is digital, online, free of charge, and free of most copyright and licensing restrictions. What makes it possible is the internet and the consent of the author or copyright-holder." (Peter Suber)
Read more from Peter Suber: What is Open Access?
There are varying degrees of open access publishing:
The following directories provide information about open access journals.
There are a number of open access and free ebook collections available online. Most provide limited views and some full-text content, usually books in the public domain.
Open Access @ CUNY is a site created by a team of CUNY library faculty interested in highlighting and advocating open access scholarship across the university. It actively posts on all topics related to Open Access, a list of resources, as well as events taking place at CUNY.