"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." A Very Brief Introduction to Open Access by Peter Suber
The open access movement promotes the practice that scholarly publications are made available online without prohibitively high access costs and stringent copyright and licensing restrictions. It facilitates quicker and broader dissemination of knowledge by removing the price and permission barriers to research outcomes.
Open access is compatible with features of traditional publishing such as peer review, journal prestige, and researchers' career advancement. It also offers many advantages, including:
These books provide excellent introduction to open access:
(This is a list of repositories for open educational resources. Also see the OAD list of OER lists, in our section of Lists maintained by others. For repositories for research in the field of education, see Education 1, above.)
This list is part of the Open Access Directory.
This is a list of repositories and databases for open data.
Related lists in OAD: Disciplinary repositories (primarily for texts, not data).
See also: re3data.org. The re3data.org project intends to create a global registry of research data repositories.
See also: Databib. Databib is a tool for helping people identify and locate online repositories of research data.