Open access is a state of copyright where works such as articles, audio/video, data, software, etc., are available freely to the public without financial and technical barriers and with permission for reuse. Researchers may be mandated by funders or institutions to make their work public access. Unlike open access, public access works are also free to view, but they may not be free to reuse depending on their license. Creative Commons licenses are the most commonly attached to open access works. The two most common ways that researchers can make their works open access are through green open access or gold open access. Through green open access, researchers deposit and make their works freely accessible through an online repository or website. Through gold open access, researchers pay a journal to make their work open access.
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