Open access publishing is the process of removing barriers such as price and copyright or licensing, in order to enable free, online access to full-text literature. Below are the options for OA publishing provided by the University of Sydney:
Open access journals make their articles available free of charge the through charging for the publication services before publication, rather than after publication through subscriptions.
Open Access repositories can hold digital duplicates of published articles and make them freely available. Subject to copyright ( See Copyright below) authors can deposit copies of their finished articles in repositories alongside their publication in normal journals. The available evidence shows that this does not affect journal subscriptions.